Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/apps/tunnel/BUILD b/apps/tunnel/BUILD
new file mode 100644
index 0000000..c7ef288
--- /dev/null
+++ b/apps/tunnel/BUILD
@@ -0,0 +1,13 @@
+BUNDLES = [
+    "//apps/tunnel/api:onos-apps-tunnel-api",
+    "//apps/tunnel/app:onos-apps-tunnel-app",
+]
+
+onos_app(
+    app_name = "org.onosproject.tunnel",
+    category = "Traffic Engineering",
+    description = "Tunnel Subsystem extension",
+    included_bundles = BUNDLES,
+    title = "Tunnel Subsystem",
+    url = "http://onosproject.org",
+)
diff --git a/apps/tunnel/api/BUILD b/apps/tunnel/api/BUILD
new file mode 100644
index 0000000..c6ca52a
--- /dev/null
+++ b/apps/tunnel/api/BUILD
@@ -0,0 +1,9 @@
+COMPILE_DEPS = CORE_DEPS + JACKSON
+
+TEST_DEPS = TEST_ADAPTERS
+
+osgi_jar_with_tests(
+    test_deps = TEST_DEPS,
+    visibility = ["//visibility:public"],
+    deps = COMPILE_DEPS,
+)
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/ExtraSubjectFactories.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/ExtraSubjectFactories.java
new file mode 100644
index 0000000..08737d6
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/ExtraSubjectFactories.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.config.SubjectFactory;
+
+/**
+ * Set of subject factories for potential configuration subjects.
+ */
+@Beta
+public final class ExtraSubjectFactories {
+
+    // Construction forbidden
+    private ExtraSubjectFactories() {
+    }
+
+    public static final SubjectFactory<IntentDomainId> INTENT_DOMAIN_SUBJECT_FACTORY =
+            new SubjectFactory<IntentDomainId>(IntentDomainId.class, "domains") {
+                @Override
+                public IntentDomainId createSubject(String key) {
+                    return IntentDomainId.valueOf(key);
+                }
+            };
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomain.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomain.java
new file mode 100644
index 0000000..7060104
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomain.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+
+import java.util.Set;
+
+/**
+ * Representation of an intent domain which includes the set of internal devices,
+ * the set of edge ports, and the implementation of the domain provider.
+ */
+@Beta
+public class IntentDomain {
+
+    private final IntentDomainId id;
+    private String name;
+
+    private Set<DeviceId> internalDevices;
+    private Set<ConnectPoint> edgePorts;
+
+    private IntentDomainProvider provider;
+
+    public IntentDomain(IntentDomainId id, String name,
+                 Set<DeviceId> internalDevices,
+                 Set<ConnectPoint> edgePorts) {
+        this.id = id;
+        this.name = name;
+        this.internalDevices = internalDevices;
+        this.edgePorts = edgePorts;
+    }
+
+    /**
+     * Returns the id for the intent domain.
+     *
+     * @return intent domain id
+     */
+    public IntentDomainId id() {
+        return id;
+    }
+
+    /**
+     * Returns the friendly name for the intent domain.
+     *
+     * @return intent domain name
+     */
+    public String name() {
+        return name;
+    }
+
+    /**
+     * Returns the set of internal devices for the intent domain (devices under
+     * exclusive control of the intent domain).
+     *
+     * @return set of internal devices
+     */
+    public Set<DeviceId> internalDevices() {
+        return internalDevices;
+    }
+
+    /**
+     * Returns the set of edge ports for the intent domain.
+     *
+     * @return set of edge ports
+     */
+    public Set<ConnectPoint> edgePorts() {
+        return edgePorts;
+    }
+
+    /**
+     * Returns the provider for the intent domain.
+     *
+     * @return intent domain provider
+     */
+    public IntentDomainProvider provider() {
+        return provider;
+    }
+
+    /**
+     * Returns the status of the intent domain. An intent domain is active if it
+     * has an intent domain provider bound, and it is inactive if one is not bound.
+     *
+     * @return true if active; false otherwise
+     */
+    public boolean isActive() {
+        return provider != null;
+    }
+
+    /**
+     * Sets the provider for the intent domain if one is not already set.
+     *
+     * @param provider new intent domain provider
+     */
+    public void setProvider(IntentDomainProvider provider) {
+        // TODO consider checkState depending on caller
+        if (this.provider == null) {
+            this.provider = provider;
+        }
+    }
+
+    /**
+     * Unsets the provider for the intent domain.
+     */
+    public void unsetProvider() {
+        this.provider = null;
+    }
+
+    //TODO add remaining setters (we will probably want to link this to the network config)
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainEvent.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainEvent.java
new file mode 100644
index 0000000..c34e80e
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainEvent.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Describes an intent domain event.
+ */
+public class IntentDomainEvent
+        extends AbstractEvent<IntentDomainEvent.Type, IntentDomain> {
+
+    public enum Type {
+        DOMAIN_ADDED,
+        DOMAIN_MODIFIED,
+        DOMAIN_REMOVED
+    }
+
+    protected IntentDomainEvent(Type type, IntentDomain subject) {
+        super(type, subject);
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainId.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainId.java
new file mode 100644
index 0000000..5140762
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainId.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onlab.util.Identifier;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Intent domain identifier.
+ */
+@Beta
+public class IntentDomainId extends Identifier<String> {
+    /**
+     * Creates an intent domain identifier from the specified string representation.
+     *
+     * @param value string value
+     * @return intent identifier
+     */
+    public static IntentDomainId valueOf(String value) {
+        return new IntentDomainId(value);
+    }
+
+    /**
+     * Constructor for serializer.
+     */
+    IntentDomainId() {
+        super(null);
+    }
+
+    /**
+     * Constructs the ID corresponding to a given string value.
+     *
+     * @param value the underlying value of this ID
+     */
+    IntentDomainId(String value) {
+        super(checkNotNull(value, "Intent domain ID cannot be null."));
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainListener.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainListener.java
new file mode 100644
index 0000000..c03b904
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainListener.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.EventListener;
+
+/**
+ * Listener for intent domain events.
+ */
+@Beta
+public interface IntentDomainListener
+    extends EventListener<IntentDomainEvent> {
+}
\ No newline at end of file
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProvider.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProvider.java
new file mode 100644
index 0000000..7c44521
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProvider.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.provider.Provider;
+
+import java.util.List;
+import java.util.Set;
+
+/**
+ * FIXME.
+ */
+@Beta
+public interface IntentDomainProvider extends Provider {
+
+    /**
+     * Requests that the provider attempt to satisfy the intent primitive.
+     * The application must apply the context before the intent resource
+     * can be used. Request contexts can be explictly cancelled, or they will
+     * eventually time out so that resources can be reused.
+     *
+     * @param domain intent domain for the request
+     * @param primitive intent primitive
+     * @return intent resources that specify paths that satisfy the request.
+     */
+    //TODO Consider an iterable and/or holds (only hold one or two reservation(s) at a time)
+    List<IntentResource> request(IntentDomain domain, IntentPrimitive primitive);
+
+    /**
+     * Request that the provider attempt to modify an existing resource to satisfy
+     * a new intent primitive. The application must apply the context before
+     * the intent resource can be used.
+     *
+     * @param oldResource the resource to be replaced
+     * @param newResource the resource to be applied
+     * @return request contexts that contain resources to satisfy the intent
+     */
+    IntentResource modify(IntentResource oldResource, IntentResource newResource);
+
+    /**
+     * Requests that the provider release an intent resource.
+     *
+     * @param resource intent resource
+     */
+    void release(IntentResource resource);
+
+    /**
+     * Requests that the provider apply the path from the intent resource.
+     *
+     * @param domainIntentResource request context
+     * @return intent resource that satisfies the intent
+     */
+    IntentResource apply(IntentResource domainIntentResource);
+
+    /**
+     * Requests that the provider cancel the path. Requests that are not applied
+     * will be eventually timed out by the provider.
+     *
+     * @param domainIntentResource the intent resource whose path should be cancelled.
+     */
+    void cancel(IntentResource domainIntentResource);
+
+    /**
+     * Returns all intent resources held by the provider.
+     *
+     * @return set of intent resources
+     */
+    Set<IntentResource> getResources();
+}
+
+
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProviderRegistry.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProviderRegistry.java
new file mode 100644
index 0000000..c3c597d
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProviderRegistry.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import org.onosproject.net.provider.ProviderRegistry;
+
+/**
+ * Abstraction of a intent domain provider registry.
+ */
+public interface IntentDomainProviderRegistry
+        extends ProviderRegistry<IntentDomainProvider, IntentDomainProviderService> {
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProviderService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProviderService.java
new file mode 100644
index 0000000..c74b483
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainProviderService.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import org.onosproject.net.provider.ProviderService;
+
+/**
+ * Service through which intent domain providers can report intent domain updates.
+ */
+public interface IntentDomainProviderService
+        extends ProviderService<IntentDomainProvider> {
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainService.java
new file mode 100644
index 0000000..0c010de
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainService.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.ListenerService;
+import org.onosproject.net.DeviceId;
+
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Service for that maintains a graph of intent domains and a registry of intent
+ * domain providers.
+ */
+@Beta
+public interface IntentDomainService
+        extends ListenerService<IntentDomainEvent, IntentDomainListener> {
+
+    /**
+     * Returns the intent domain for the given id.
+     *
+     * @param id id to look up
+     * @return the intent domain; null if none found
+     */
+    IntentDomain getDomain(IntentDomainId id);
+
+    /**
+     * Returns a set of all intent domains.
+     *
+     * @return set of intent domains
+     */
+    Set<IntentDomain> getDomains();
+
+    /**
+     * Returns any network domains associated with the given device id.
+     *
+     * @param deviceId device id to look up
+     * @return set of intent domain
+     */
+    Set<IntentDomain> getDomains(DeviceId deviceId);
+
+    /**
+     * Requests an intent primitive from the intent domain.
+     *
+     * @param domainId id of target domain
+     * @param primitive intent primitive
+     * @return set of intent resources that satisfy the primitive
+     */
+    List<IntentResource> request(IntentDomainId domainId, IntentPrimitive primitive);
+
+    /**
+     * Submits an intent resource to the intent domain for installation.
+     *
+     * @param domainId id of target domain
+     * @param resource intent resource
+     */
+    void submit(IntentDomainId domainId, IntentResource resource);
+}
+
+
+
+
+
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentPrimitive.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentPrimitive.java
new file mode 100644
index 0000000..04164b5
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentPrimitive.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.ApplicationId;
+
+/**
+ * Abstract base class for intent primitives.
+ */
+@Beta
+public abstract class IntentPrimitive {
+
+    private final ApplicationId appId;
+
+    public IntentPrimitive(ApplicationId appId) {
+        this.appId = appId;
+    }
+
+    /**
+     * The getter for the application ID associated with the intent primitive upon creation.
+     *
+     * @return the application ID associated with the intent primitive
+     */
+    public ApplicationId appId() {
+        return appId;
+    }
+}
\ No newline at end of file
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentResource.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentResource.java
new file mode 100644
index 0000000..aa6aef4
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentResource.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.ConnectPoint;
+
+
+/**
+ * The abstract base class for the resource that satisfies an intent primitive.
+ */
+@Beta
+public abstract class IntentResource {
+
+    private final IntentPrimitive primitive;
+
+    private final ApplicationId appId;
+    private final ConnectPoint ingress;
+    private final ConnectPoint egress;
+
+    //* QUESTIONABLE ADDITIONS *//
+
+    // TODO add other common fields
+    //String ingressTag;
+    //String egressTag;
+    //etc.
+
+    public IntentResource(IntentPrimitive primitive, ApplicationId appId,
+                          ConnectPoint ingress, ConnectPoint egress) {
+        this.appId = appId;
+        this.ingress = ingress;
+        this.egress = egress;
+        this.primitive = primitive;
+    }
+
+    //TODO when is same package tunnelID should be of type tunnelID and netTunnelId not long.
+
+
+    /**
+     * Returns the intent primitive associated with this resource at creation.
+     *
+     * @return this resource's intent primitive.
+     */
+    public IntentPrimitive primitive() {
+        return primitive;
+    }
+
+    /**
+     * Returns the application ID associated with this resource at creation.
+     *
+     * @return this resource's application ID.
+     */
+    public ApplicationId appId() {
+        return appId;
+    }
+
+    /**
+     * Returns the ingress connect point associated with this resource at creation.
+     *
+     * @return this resource's ingress connect point.
+     */
+    public ConnectPoint ingress() {
+        return ingress;
+    }
+
+    /**
+     * Returns the egress connect point associated with this resource at creation.
+     *
+     * @return this resource's connect point.
+     */
+    public ConnectPoint egress() {
+        return egress;
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/TunnelPrimitive.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/TunnelPrimitive.java
new file mode 100644
index 0000000..5a5518e
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/TunnelPrimitive.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.ConnectPoint;
+
+/**
+ * Provides connectivity through a domain.
+ */
+@Beta
+public class TunnelPrimitive extends IntentPrimitive {
+
+    private final ConnectPoint one;
+    private final ConnectPoint two;
+
+    public TunnelPrimitive(ApplicationId appId, ConnectPoint one, ConnectPoint two) {
+        super(appId);
+        this.one = one;
+        this.two = two;
+    }
+
+    /**
+     * The getter for the first connection point associated with a tunnel.
+     *
+     * @return the first connection point
+     */
+    public ConnectPoint one() {
+        return one;
+    }
+
+    /**
+     * The getter for the second connection point associated with a tunnel.
+     * @return the second connection point
+     */
+    public ConnectPoint two() {
+        return two;
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/package-info.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/package-info.java
new file mode 100644
index 0000000..c4092aa
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Subsystem for network intent domains.
+ */
+package org.onosproject.incubator.net.domain;
\ No newline at end of file
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/DefaultLabelResource.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/DefaultLabelResource.java
new file mode 100644
index 0000000..9c5a6c0
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/DefaultLabelResource.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import java.util.Objects;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderId;
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+/**
+ * the implementation of a label resource of a device.
+ */
+@Beta
+public final class DefaultLabelResource implements LabelResource {
+
+    private DeviceId deviceId;
+
+    private LabelResourceId labelResourceId;
+
+    /**
+     * Initialize a label resource object.
+     * @param deviceId device identifier
+     * @param labelResourceId label resource id
+     */
+    public DefaultLabelResource(String deviceId, long labelResourceId) {
+        this.deviceId = DeviceId.deviceId(deviceId);
+        this.labelResourceId = LabelResourceId.labelResourceId(labelResourceId);
+    }
+
+    /**
+     * Initialize a label resource object.
+     * @param deviceId device identifier
+     * @param labelResourceId label resource id
+     */
+    public DefaultLabelResource(DeviceId deviceId,
+                                LabelResourceId labelResourceId) {
+        this.deviceId = deviceId;
+        this.labelResourceId = labelResourceId;
+    }
+
+    @Override
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    @Override
+    public LabelResourceId labelResourceId() {
+        return labelResourceId;
+    }
+
+    @Override
+    public Annotations annotations() {
+        return null;
+    }
+
+    @Override
+    public ProviderId providerId() {
+        return null;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(deviceId, labelResourceId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof DefaultLabelResource) {
+            DefaultLabelResource that = (DefaultLabelResource) obj;
+            return Objects.equals(this.deviceId, that.deviceId)
+                    && Objects.equals(this.labelResourceId,
+                                      that.labelResourceId);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this).add("deviceId", deviceId)
+                .add("labelResourceId", labelResourceId).toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResource.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResource.java
new file mode 100644
index 0000000..669c020
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResource.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.Annotated;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.NetworkResource;
+import org.onosproject.net.Provided;
+
+/**
+ * Representation of label resource.
+ */
+@Beta
+public interface LabelResource extends Annotated, Provided, NetworkResource {
+    /**
+     * Returns device id.
+     * @return DeviceId
+     */
+    DeviceId deviceId();
+
+    /**
+     * Returns label resource identifier.
+     *
+     * @return resource id
+     */
+    LabelResourceId labelResourceId();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceAdminService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceAdminService.java
new file mode 100644
index 0000000..28bf86b
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceAdminService.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.DeviceId;
+
+/**
+ * Service for managing label resource.
+ */
+@Beta
+public interface LabelResourceAdminService {
+    /**
+     * Creates the only label resource of some device id from begin label to end
+     * label.
+     *
+     * @param deviceId device identifier
+     * @param beginLabel represents for the first label id in the range of label
+     *            pool
+     * @param endLabel represents for the last label id in the range of label
+     *            pool
+     * @return success or fail
+     */
+    boolean createDevicePool(DeviceId deviceId, LabelResourceId beginLabel,
+                             LabelResourceId endLabel);
+
+    /**
+     * Creates the only global label resource pool.
+     *
+     * @param beginLabel represents for the first label id in the range of label
+     *            pool
+     * @param endLabel represents for the last label id in the range of label
+     *            pool
+     * @return success or fail
+     */
+    boolean createGlobalPool(LabelResourceId beginLabel,
+                             LabelResourceId endLabel);
+
+    /**
+     * Destroys a label resource pool of a specific device id.
+     *
+     * @param deviceId device identifier
+     * @return success or fail
+     */
+    boolean destroyDevicePool(DeviceId deviceId);
+
+    /**
+     * Destroys the global label resource pool.
+     *
+     * @return success or fail
+     */
+    boolean destroyGlobalPool();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceDelegate.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceDelegate.java
new file mode 100644
index 0000000..2dde408
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceDelegate.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * Label resource store delegate.
+ */
+@Beta
+public interface LabelResourceDelegate extends StoreDelegate<LabelResourceEvent> {
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceEvent.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceEvent.java
new file mode 100644
index 0000000..a21ae3b
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceEvent.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Describes label resource event.
+ */
+@Beta
+public final class LabelResourceEvent
+        extends AbstractEvent<LabelResourceEvent.Type, LabelResourcePool> {
+
+    /**
+     * Type of label resource event.
+     */
+    public enum Type {
+        /**
+         * Signifies that a new pool has been administratively created.
+         */
+        POOL_CREATED,
+        /**
+         * Signifies that a new pool has been administratively destroyed.
+         */
+        POOL_DESTROYED,
+        /**
+         * Signifies that a new pool has been administratively changed.
+         */
+        POOL_CAPACITY_CHANGED
+    }
+
+    /**
+     * Creates an event of a given type and the given LabelResourcePool.
+     *
+     * @param type event type
+     * @param subject pool
+     */
+    public LabelResourceEvent(Type type, LabelResourcePool subject) {
+        super(type, subject);
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceId.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceId.java
new file mode 100644
index 0000000..99d7f69
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceId.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onlab.util.Identifier;
+
+/**
+ * Representation of a label.
+ */
+@Beta
+public final class LabelResourceId extends Identifier<Long> {
+
+    /**
+     * Creates a new label identifier.
+     *
+     * @param labelResourceId backing identifier value
+     * @return label identifier
+     */
+    public static LabelResourceId labelResourceId(long labelResourceId) {
+        return new LabelResourceId(labelResourceId);
+    }
+
+    // Public construction is prohibited
+    private LabelResourceId(long labelId) {
+        super(labelId);
+    }
+
+    /**
+     * Returns label identifier.
+     *
+     * @return label identifier
+     */
+    public long labelId() {
+        return identifier;
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceListener.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceListener.java
new file mode 100644
index 0000000..113dd2a
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceListener.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of receiving label resource related events.
+ */
+@Beta
+public interface LabelResourceListener extends EventListener<LabelResourceEvent> {
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourcePool.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourcePool.java
new file mode 100644
index 0000000..d34bb97
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourcePool.java
@@ -0,0 +1,191 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import java.util.Collections;
+import java.util.Objects;
+import java.util.Set;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.DeviceId;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableSet;
+
+/**
+ * Abstraction of the capacity of device label resource or global label
+ * resource. It's contiguous range of label resource. When a application apply
+ * some labels of some device, first catch from Set that store
+ * available labels, if the size of the Set less than the apply number, then get
+ * labels by calculating with three attributes, beginLabel,endLabel and
+ * currentUsedMaxLabelId.
+ */
+@Beta
+public class LabelResourcePool {
+
+    private final DeviceId deviceId;
+    private final LabelResourceId beginLabel;
+    private final LabelResourceId endLabel;
+    private final long totalNum; // capacity of label resource pool
+    private final long usedNum; // have used label number
+    private final LabelResourceId currentUsedMaxLabelId; // the maximal label
+                                                        // number id
+    private ImmutableSet<LabelResource> releaseLabelId; // Set of released label
+
+    /**
+     * Creates a pool by device id,begin label id,end label id.
+     *
+     * @param deviceId device identifier
+     * @param beginLabel represents for the first label id in the range of label
+     *            resource pool
+     * @param endLabel represents for the last label id in the range of label
+     *            resource pool
+     */
+    public LabelResourcePool(String deviceId, long beginLabel, long endLabel) {
+        this(deviceId, beginLabel, endLabel, endLabel - beginLabel + 1, 0L,
+             beginLabel, ImmutableSet.copyOf(Collections.emptySet()));
+    }
+
+    /**
+     * Creates a pool by device id,begin label id,end label id.
+     * Used to update a pool in the store.
+     *
+     * @param deviceId device identifier
+     * @param beginLabel represents for the first label id in the range of label
+     *            resource pool
+     * @param endLabel represents for the last label id in the range of label
+     *            resource pool
+     * @param totalNum capacity of label resource pool
+     * @param usedNum have used label number
+     * @param currentUsedMaxLabelId the maximal label number id
+     * @param releaseLabelId Set of released label
+     */
+    public LabelResourcePool(String deviceId, long beginLabel, long endLabel,
+                             long totalNum, long usedNum,
+                             long currentUsedMaxLabelId,
+                             ImmutableSet<LabelResource> releaseLabelId) {
+        checkArgument(endLabel >= beginLabel,
+                      "endLabel %s must be greater than or equal to beginLabel %s",
+                      endLabel, beginLabel);
+        this.deviceId = DeviceId.deviceId(deviceId);
+        this.beginLabel = LabelResourceId.labelResourceId(beginLabel);
+        this.endLabel = LabelResourceId.labelResourceId(endLabel);
+        this.totalNum = totalNum;
+        this.usedNum = usedNum;
+        this.currentUsedMaxLabelId = LabelResourceId
+                .labelResourceId(currentUsedMaxLabelId);
+        this.releaseLabelId = releaseLabelId;
+    }
+
+    /**
+     * Returns a device id.
+     *
+     * @return DeviceId
+     */
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    /**
+     * Returns a begin Label id.
+     *
+     * @return begin Label id
+     */
+    public LabelResourceId beginLabel() {
+        return beginLabel;
+    }
+
+    /**
+     * Returns an end Label id.
+     *
+     * @return end Label id
+     */
+    public LabelResourceId endLabel() {
+        return endLabel;
+    }
+
+    /**
+     * Returns a begin Label id.
+     *
+     * @return current Used Maximal Label Id
+     */
+    public LabelResourceId currentUsedMaxLabelId() {
+        return currentUsedMaxLabelId;
+    }
+
+    /**
+     * Returns total number.
+     *
+     * @return the total label number
+     */
+    public long totalNum() {
+        return totalNum;
+    }
+
+    /**
+     * Returns used number.
+     *
+     * @return the used label number
+     */
+    public long usedNum() {
+        return usedNum;
+    }
+
+    /**
+     * Returns the Set of released label before.
+     *
+     * @return the Set of LabelResource
+     */
+    public Set<LabelResource> releaseLabelId() {
+        return releaseLabelId;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(this.deviceId, this.beginLabel, this.endLabel,
+                            this.totalNum, this.usedNum,
+                            this.currentUsedMaxLabelId, this.releaseLabelId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof LabelResourcePool) {
+            LabelResourcePool that = (LabelResourcePool) obj;
+            return Objects.equals(this.deviceId, that.deviceId)
+                    && Objects.equals(this.beginLabel, that.beginLabel)
+                    && Objects.equals(this.endLabel, that.endLabel)
+                    && Objects.equals(this.totalNum, that.totalNum)
+                    && Objects.equals(this.usedNum, that.usedNum)
+                    && Objects.equals(this.currentUsedMaxLabelId,
+                                      that.currentUsedMaxLabelId)
+                    && Objects.equals(this.releaseLabelId, that.releaseLabelId);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        // TODO Auto-generated method stub
+        return MoreObjects.toStringHelper(this).add("deviceId", this.deviceId)
+                .add("beginLabel", this.beginLabel)
+                .add("endLabel", this.endLabel).add("totalNum", this.totalNum)
+                .add("usedNum", this.usedNum)
+                .add("currentUsedMaxLabelId", this.currentUsedMaxLabelId)
+                .add("releaseLabelId", this.releaseLabelId).toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProvider.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProvider.java
new file mode 100644
index 0000000..986993e
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProvider.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.provider.Provider;
+
+/**
+ * Abstraction of an entity providing information about label resource
+ * to the core.
+ */
+@Beta
+public interface LabelResourceProvider extends Provider {
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderRegistry.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderRegistry.java
new file mode 100644
index 0000000..c6130cb
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderRegistry.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.provider.ProviderRegistry;
+
+/**
+ * Abstraction of an label resource provider registry.
+ */
+@Beta
+public interface LabelResourceProviderRegistry
+        extends ProviderRegistry<LabelResourceProvider, LabelResourceProviderService> {
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderService.java
new file mode 100644
index 0000000..b7fd072
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderService.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderService;
+
+/**
+ * Means for injecting label information into the core.
+ */
+@Beta
+public interface LabelResourceProviderService extends ProviderService<LabelResourceProvider> {
+
+    /**
+     * Signals that a device label resource pool has been detected.
+     * @param deviceId device identifier
+     * @param beginLabel the begin label number of resource
+     * @param endLabel the end label number of resource
+     */
+    void deviceLabelResourcePoolDetected(DeviceId deviceId,
+                                         LabelResourceId beginLabel,
+                                         LabelResourceId endLabel);
+
+    /**
+     * Signals that an label resource pool has been destroyed.
+     * @param deviceId device identifier
+     */
+    void deviceLabelResourcePoolDestroyed(DeviceId deviceId);
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceRequest.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceRequest.java
new file mode 100644
index 0000000..776e068
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceRequest.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import java.util.Collection;
+import java.util.Objects;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.DeviceId;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableSet;
+
+/**
+ * Represents for a label request.
+ */
+@Beta
+public class LabelResourceRequest {
+
+    private final DeviceId deviceId;
+    private final Type type;
+    private final long applyNum;
+    private ImmutableSet<LabelResource> releaseCollection;
+
+    /**
+     * Creates LabelResourceRequest object.
+     * @param deviceId device identifier
+     * @param type request type
+     * @param applyNum apply the number of labels
+     * @param releaseCollection Set of released label
+     */
+    public LabelResourceRequest(DeviceId deviceId,
+                                Type type,
+                                long applyNum,
+                                ImmutableSet<LabelResource> releaseCollection) {
+        this.deviceId = deviceId;
+        this.type = type;
+        this.applyNum = applyNum;
+        this.releaseCollection = releaseCollection;
+    }
+    /**
+     * Returns a device id.
+     * @return DeviceId
+     */
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    /**
+     * Returns request type.
+     * @return Type
+     */
+    public Type type() {
+        return type;
+    }
+
+    /**
+     * Returns apply label number.
+     * @return label number
+     */
+    public long applyNum() {
+        return applyNum;
+    }
+
+    /**
+     * Returns the collection of release labels.
+     * @return Collection of DefaultLabelResource
+     */
+    public Collection<LabelResource> releaseCollection() {
+        return releaseCollection;
+    }
+
+    /**
+     * Request type.
+     */
+    public enum Type {
+        APPLY, //apple label request
+        RELEASE //release label request
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(this.deviceId, this.applyNum, this.type,
+                            this.releaseCollection);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof LabelResourceRequest) {
+            LabelResourceRequest that = (LabelResourceRequest) obj;
+            return Objects.equals(this.deviceId, that.deviceId)
+                    && Objects.equals(this.applyNum, that.applyNum)
+                    && Objects.equals(this.type, that.type)
+                    && Objects.equals(this.releaseCollection,
+                                      that.releaseCollection);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this).add("deviceId", this.deviceId)
+                .add("applyNum", this.applyNum).add("type", this.type)
+                .add("releaseCollection", this.releaseCollection).toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceService.java
new file mode 100644
index 0000000..91cdedc
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceService.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import java.util.Collection;
+import java.util.Set;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.ListenerService;
+import org.onosproject.net.DeviceId;
+
+import com.google.common.collect.Multimap;
+
+/**
+ * Service for providing label resource allocation.
+ */
+@Beta
+public interface LabelResourceService
+    extends ListenerService<LabelResourceEvent, LabelResourceListener> {
+
+    /**
+     * Returns labels from resource pool by a specific device id.
+     *
+     * @param deviceId device identifier
+     * @param applyNum the applying number
+     * @return collection of applying labels
+     */
+    Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                  long applyNum);
+
+    /**
+     * Returns labels from the global label resource pool.
+     *
+     * @param applyNum the applying number
+     * @return collection of applying labels
+     */
+    Collection<LabelResource> applyFromGlobalPool(long applyNum);
+
+    /**
+     * Releases unused labels to device pools .
+     *
+     * @param release the collection of releasing labels
+     * @return success or fail
+     */
+    boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release);
+
+    /**
+     * Releases unused labels to the global resource pool.
+     *
+     * @param release release the collection of releasing labels
+     * @return success or fail
+     */
+    boolean releaseToGlobalPool(Set<LabelResourceId> release);
+
+    /**
+     * Judges if the pool of a specific device id is full.
+     *
+     * @param deviceId device identifier
+     * @return yes or no
+     */
+    boolean isDevicePoolFull(DeviceId deviceId);
+
+    /**
+     * Judges if the global resource pool is full.
+     *
+     * @return yes or no
+     */
+    boolean isGlobalPoolFull();
+
+    /**
+     * Returns the unused label number of a label resource pool by a specific device
+     * id.
+     *
+     * @param deviceId device identifier
+     * @return number of unused labels
+     */
+    long getFreeNumOfDevicePool(DeviceId deviceId);
+
+    /**
+     * Returns the unused label number of a global label resource pool.
+     *
+     * @return number of unused labels
+     */
+    long getFreeNumOfGlobalPool();
+
+    /**
+     * Returns the label resource pool of a label resource by a specific device
+     * id.
+     *
+     * @param deviceId device identifier
+     * @return the device label resource pool
+     */
+    LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId);
+
+    /**
+     * Returns the global label resource pool.
+     *
+     * @return the global label resource pool
+     */
+    LabelResourcePool getGlobalLabelResourcePool();
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceStore.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceStore.java
new file mode 100644
index 0000000..b27cefe
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceStore.java
@@ -0,0 +1,154 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import java.util.Collection;
+import java.util.Set;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.DeviceId;
+import org.onosproject.store.Store;
+
+import com.google.common.collect.Multimap;
+
+/**
+ * Manages inventory of label; not intended for direct use.
+ *
+ */
+@Beta
+public interface LabelResourceStore
+        extends Store<LabelResourceEvent, LabelResourceDelegate> {
+
+    /**
+     * Creates a label resource of some device id from begin label to end label.
+     *
+     * @param deviceId device identifier
+     * @param beginLabel represents for the first label id in the range of label
+     *            pool
+     * @param endLabel represents for the last label id in the range of label
+     *            pool
+     * @return success or fail
+     */
+    boolean createDevicePool(DeviceId deviceId, LabelResourceId beginLabel,
+                             LabelResourceId endLabel);
+
+    /**
+     * Creates the global label resource pool.
+     *
+     * @param beginLabel represents for the first label id in the range of label
+     *            pool
+     * @param endLabel represents for the last label id in the range of label
+     *            pool
+     * @return success or fail
+     */
+    boolean createGlobalPool(LabelResourceId beginLabel,
+                             LabelResourceId endLabel);
+
+    /**
+     * Destroys a label resource pool of a specific device id.
+     *
+     * @param deviceId device identifier
+     * @return success or fail
+     */
+    boolean destroyDevicePool(DeviceId deviceId);
+
+    /**
+     * Destroys a the global label resource pool.
+     *
+     * @return success or fail
+     */
+    boolean destroyGlobalPool();
+
+    /**
+     * Returns labels from resource pool by a specific device id.
+     *
+     * @param deviceId device identifier
+     * @param applyNum the applying number
+     * @return collection of applying labels
+     */
+    Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                  long applyNum);
+
+    /**
+     * Returns labels from the global label resource pool.
+     *
+     * @param applyNum apply the number of labels
+     * @return collection of labels
+     */
+    Collection<LabelResource> applyFromGlobalPool(long applyNum);
+
+    /**
+     * Releases unused labels to device pools .
+     *
+     * @param release the collection of releasing labels
+     * @return success or fail
+     */
+    boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release);
+
+    /**
+     * Releases unused labels to the global resource pool.
+     *
+     * @param release release the collection of releasing labels
+     * @return success or fail
+     */
+    boolean releaseToGlobalPool(Set<LabelResourceId> release);
+
+    /**
+     * Judges if the pool of a specific device id is full.
+     *
+     * @param deviceId device identifier
+     * @return yes or no
+     */
+    boolean isDevicePoolFull(DeviceId deviceId);
+
+    /**
+     * Judges if the global resource pool is full.
+     *
+     * @return yes or no
+     */
+    boolean isGlobalPoolFull();
+
+    /**
+     * Returns the unused label number of a label resource pool by a specific device
+     * id.
+     *
+     * @param deviceId device identifier
+     * @return number of unused labels
+     */
+    long getFreeNumOfDevicePool(DeviceId deviceId);
+
+    /**
+     * Returns the unused number of a global label resource pool.
+     *
+     * @return number of unused labels
+     */
+    long getFreeNumOfGlobalPool();
+
+    /**
+     * Returns the label resource pool by a specific device id.
+     *
+     * @param deviceId device identifier
+     * @return the device label resource pool
+     */
+    LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId);
+
+    /**
+     * Returns the global label resource pool.
+     *
+     * @return the global label resource pool
+     */
+    LabelResourcePool getGlobalLabelResourcePool();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/package-info.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/package-info.java
new file mode 100644
index 0000000..7a8de6f
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/resource/label/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Service for reserving labels as network resources.
+ */
+package org.onosproject.incubator.net.resource.label;
\ No newline at end of file
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultLabelStack.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultLabelStack.java
new file mode 100644
index 0000000..1c7ff8c
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultLabelStack.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableList;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * Default implementation of label stack.
+ */
+public class DefaultLabelStack implements LabelStack {
+
+    private final List<LabelResourceId> labelResources;
+
+    /**
+     * Creates label stack.
+     *
+     * @param labelResources contiguous label ids that comprise the path
+     */
+    public DefaultLabelStack(List<LabelResourceId> labelResources) {
+        this.labelResources = ImmutableList.copyOf(labelResources);
+    }
+
+    @Override
+    public List<LabelResourceId> labelResources() {
+        return labelResources;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("labelResources", labelResources)
+                .toString();
+    }
+
+    @Override
+    public int hashCode() {
+        return labelResources.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DefaultLabelStack) {
+            final DefaultLabelStack other = (DefaultLabelStack) obj;
+            return Objects.equals(this.labelResources, other.labelResources);
+        }
+        return false;
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultOpticalTunnelEndPoint.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultOpticalTunnelEndPoint.java
new file mode 100644
index 0000000..c33d713
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultOpticalTunnelEndPoint.java
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+import java.util.Objects;
+import java.util.Optional;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.AbstractModel;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Default optical tunnel point model implementation.
+ */
+@Beta
+public class DefaultOpticalTunnelEndPoint extends AbstractModel implements OpticalTunnelEndPoint {
+    private final Optional<ElementId> elementId;
+    private final Optional<PortNumber> portNumber;
+    private final Optional<OpticalTunnelEndPoint> parentPoint;
+    private final Type type;
+    private final OpticalLogicId id;
+    private final boolean isGlobal;
+
+    /**
+     * Creates a optical tunnel point attributed to the specified provider (may be null).
+     * if provider is null, which means the optical tunnel point is not managed by the SB.
+     *
+     * @param providerId  tunnelProvider Id
+     * @param elementId   parent network element
+     * @param number      port number
+     * @param parentPoint parent port or parent label
+     * @param type        port type
+     * @param id          LabelId
+     * @param isGlobal    indicator whether the label is global significant or not
+     * @param annotations optional key/value annotations
+     */
+    public DefaultOpticalTunnelEndPoint(ProviderId providerId, Optional<ElementId> elementId,
+                        Optional<PortNumber> number, Optional<OpticalTunnelEndPoint> parentPoint,
+                        Type type, OpticalLogicId id, boolean isGlobal, Annotations... annotations) {
+        super(providerId, annotations);
+        this.elementId = elementId;
+        this.portNumber = number;
+        this.parentPoint = parentPoint;
+        this.id = id;
+        this.type = type;
+        this.isGlobal = isGlobal;
+    }
+
+    @Override
+    public OpticalLogicId id() {
+        return id;
+    }
+
+    @Override
+    public Optional<ElementId> elementId() {
+        return elementId;
+    }
+
+    @Override
+    public Optional<PortNumber> portNumber() {
+        return portNumber;
+    }
+
+    @Override
+    public Optional<OpticalTunnelEndPoint> parentPoint() {
+        return parentPoint;
+    }
+
+    @Override
+    public boolean isGlobal() {
+        return isGlobal;
+    }
+
+    @Override
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(elementId, portNumber, parentPoint, id);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DefaultOpticalTunnelEndPoint) {
+            final DefaultOpticalTunnelEndPoint other = (DefaultOpticalTunnelEndPoint) obj;
+            return Objects.equals(this.id, other.id) &&
+                   Objects.equals(this.type, other.type) &&
+                   Objects.equals(this.isGlobal, other.isGlobal) &&
+                   Objects.equals(this.elementId, other.elementId) &&
+                   Objects.equals(this.portNumber, other.portNumber) &&
+                   Objects.equals(this.parentPoint, other.parentPoint);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("elementId", elementId)
+                .add("portNumber", portNumber)
+                .add("parentPoint", parentPoint)
+                .add("type", type)
+                .add("id", id)
+                .add("isGlobal", isGlobal)
+                .toString();
+    }
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnel.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnel.java
new file mode 100644
index 0000000..7c639de
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnel.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+import java.util.Objects;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.AbstractModel;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.NetworkResource;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * The default implementation of an network tunnel. supports for creating a
+ * tunnel by connect point ,IP address, MAC address, device and so on.
+ */
+@Beta
+public final class DefaultTunnel extends AbstractModel implements Tunnel {
+
+    private final TunnelEndPoint src; // a source point of tunnel.
+    private final TunnelEndPoint dst; // a destination point of tunnel.
+    private final State state;
+    private final Type type; // tunnel type
+    private final GroupId groupId; // represent for a group flow table
+    // which a tunnel match up
+    // tunnel producer
+    private final TunnelId tunnelId; // tunnel identify generated by
+                                     // ONOS as primary key
+    private final TunnelName tunnelName; // name of a tunnel
+    private final Path path;
+    private final NetworkResource networkRes; // network resource to carry label stack
+
+    /**
+     * Creates an active infrastructure tunnel using the supplied information.
+     *
+     * @param producerName provider identity
+     * @param src tunnel source
+     * @param dst tunnel destination
+     * @param type tunnel type
+     * @param groupId groupId
+     * @param tunnelId tunnelId
+     * @param tunnelName tunnel name
+     * @param path the path of tunnel
+     * @param annotations optional key/value annotations
+     */
+    public DefaultTunnel(ProviderId producerName, TunnelEndPoint src,
+                         TunnelEndPoint dst, Type type, GroupId groupId,
+                         TunnelId tunnelId, TunnelName tunnelName, Path path,
+                         Annotations... annotations) {
+        this(producerName, src, dst, type, Tunnel.State.ACTIVE, groupId,
+             tunnelId, tunnelName, path, annotations);
+    }
+
+    /**
+     * Creates an tunnel using the supplied information.
+     *
+     * @param producerName provider identity
+     * @param src tunnel source
+     * @param dst tunnel destination
+     * @param type tunnel type
+     * @param state tunnel state
+     * @param groupId groupId
+     * @param tunnelId tunnelId
+     * @param tunnelName tunnel name
+     * @param path the path of tunnel
+     * @param annotations optional key/value annotations
+     */
+    public DefaultTunnel(ProviderId producerName, TunnelEndPoint src,
+                         TunnelEndPoint dst, Type type, State state,
+                         GroupId groupId, TunnelId tunnelId,
+                         TunnelName tunnelName, Path path, Annotations... annotations) {
+        super(producerName, annotations);
+        this.src = src;
+        this.dst = dst;
+        this.type = type;
+        this.state = state;
+        this.groupId = groupId;
+        this.tunnelId = tunnelId;
+        this.tunnelName = tunnelName;
+        this.path = path;
+        this.networkRes = null;
+    }
+
+    /**
+     * Creates an active infrastructure tunnel using the supplied information.
+     *
+     * @param producerName provider identity
+     * @param src tunnel source
+     * @param dst tunnel destination
+     * @param type tunnel type
+     * @param groupId groupId
+     * @param tunnelId tunnelId
+     * @param tunnelName tunnel name
+     * @param path the path of tunnel
+     * @param networkRes network resource of tunnel
+     * @param annotations optional key/value annotations
+     */
+    public DefaultTunnel(ProviderId producerName, TunnelEndPoint src,
+                         TunnelEndPoint dst, Type type, GroupId groupId,
+                         TunnelId tunnelId, TunnelName tunnelName, Path path,
+                         NetworkResource networkRes, Annotations... annotations) {
+        this(producerName, src, dst, type, Tunnel.State.ACTIVE, groupId,
+                tunnelId, tunnelName, path, networkRes, annotations);
+    }
+
+    /**
+     * Creates an tunnel using the supplied information.
+     *
+     * @param producerName provider identity
+     * @param src tunnel source
+     * @param dst tunnel destination
+     * @param type tunnel type
+     * @param state tunnel state
+     * @param groupId groupId
+     * @param tunnelId tunnelId
+     * @param tunnelName tunnel name
+     * @param path the path of tunnel
+     * @param networkRes network resource of tunnel
+     * @param annotations optional key/value annotations
+     */
+    public DefaultTunnel(ProviderId producerName, TunnelEndPoint src,
+                         TunnelEndPoint dst, Type type, State state,
+                         GroupId groupId, TunnelId tunnelId,
+                         TunnelName tunnelName, Path path, NetworkResource networkRes,
+                         Annotations... annotations) {
+        super(producerName, annotations);
+        this.src = src;
+        this.dst = dst;
+        this.type = type;
+        this.state = state;
+        this.groupId = groupId;
+        this.tunnelId = tunnelId;
+        this.tunnelName = tunnelName;
+        this.path = path;
+        this.networkRes = networkRes;
+    }
+
+    @Override
+    public TunnelEndPoint src() {
+        return src;
+    }
+
+    @Override
+    public TunnelEndPoint dst() {
+        return dst;
+    }
+
+    @Override
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public State state() {
+        return state;
+    }
+
+    @Override
+    public NetworkResource resource() {
+        return networkRes;
+    }
+
+    @Override
+    public TunnelId tunnelId() {
+        return tunnelId;
+    }
+
+    @Override
+    public GroupId groupId() {
+        return groupId;
+    }
+
+    @Override
+    public TunnelName tunnelName() {
+        return tunnelName;
+    }
+
+
+    @Override
+    public Path path() {
+        return path;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(src, dst, type, groupId, tunnelId, tunnelName,
+                            state, path, networkRes);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DefaultTunnel) {
+            final DefaultTunnel other = (DefaultTunnel) obj;
+            return Objects.equals(this.src, other.src)
+                    && Objects.equals(this.dst, other.dst)
+                    && Objects.equals(this.type, other.type)
+                    && Objects.equals(this.groupId, other.groupId)
+                    && Objects.equals(this.tunnelId, other.tunnelId)
+                    && Objects.equals(this.tunnelName, other.tunnelName)
+                    && Objects.equals(this.state, other.state)
+                    && Objects.equals(this.path, other.path)
+                    && Objects.equals(this.networkRes, other.networkRes);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this).add("src", src).add("dst", dst)
+                .add("type", type).add("state", state).add("groupId", groupId)
+                .add("producerTunnelId", tunnelId)
+                .add("tunnelName", tunnelName)
+                .add("path", path)
+                .add("networkResource", networkRes).toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnelDescription.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnelDescription.java
new file mode 100644
index 0000000..505650a
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnelDescription.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.AbstractDescription;
+import org.onosproject.net.NetworkResource;
+import org.onosproject.net.Path;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.provider.ProviderId;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Default implementation of immutable tunnel description entity.
+ */
+@Beta
+public class DefaultTunnelDescription extends AbstractDescription
+        implements TunnelDescription {
+
+    private final TunnelId tunnelId;
+    private final TunnelEndPoint src;
+    private final TunnelEndPoint dst;
+    private final Tunnel.Type type;
+    private final GroupId groupId; // represent for a group flow table
+    // which a tunnel match up
+    // tunnel producer
+    private final ProviderId producerName; // tunnel producer name
+    private final TunnelName tunnelName; // name of a tunnel
+    private final Path path;
+    private final NetworkResource networkRes;
+
+    /**
+     * Creates a tunnel description using the supplied information.
+     *
+     * @param id TunnelId
+     * @param src TunnelPoint source
+     * @param dst TunnelPoint destination
+     * @param type tunnel type
+     * @param groupId groupId
+     * @param producerName tunnel producer
+     * @param tunnelName tunnel name
+     * @param path the path of tunnel
+     * @param annotations optional key/value annotations
+     */
+    public DefaultTunnelDescription(TunnelId id, TunnelEndPoint src,
+                                    TunnelEndPoint dst, Tunnel.Type type,
+                                    GroupId groupId,
+                                    ProviderId producerName,
+                                    TunnelName tunnelName,
+                                    Path path,
+                                    SparseAnnotations... annotations) {
+        super(annotations);
+        this.tunnelId = id;
+        this.src = src;
+        this.dst = dst;
+        this.type = type;
+        this.groupId = groupId;
+        this.producerName = producerName;
+        this.tunnelName = tunnelName;
+        this.path = path;
+        this.networkRes = null;
+    }
+
+    /**
+     * Creates a tunnel description using the supplied information.
+     *
+     * @param id TunnelId
+     * @param src TunnelPoint source
+     * @param dst TunnelPoint destination
+     * @param type tunnel type
+     * @param groupId groupId
+     * @param producerName tunnel producer
+     * @param tunnelName tunnel name
+     * @param path the path of tunnel
+     * @param networkRes network resource of tunnel
+     * @param annotations optional key/value annotations
+     */
+    public DefaultTunnelDescription(TunnelId id, TunnelEndPoint src,
+                                    TunnelEndPoint dst, Tunnel.Type type,
+                                    GroupId groupId,
+                                    ProviderId producerName,
+                                    TunnelName tunnelName,
+                                    Path path,
+                                    NetworkResource networkRes,
+                                    SparseAnnotations... annotations) {
+        super(annotations);
+        this.tunnelId = id;
+        this.src = src;
+        this.dst = dst;
+        this.type = type;
+        this.groupId = groupId;
+        this.producerName = producerName;
+        this.tunnelName = tunnelName;
+        this.path = path;
+        this.networkRes = networkRes;
+    }
+
+    @Override
+    public TunnelId id() {
+        return tunnelId;
+    }
+
+    @Override
+    public TunnelEndPoint src() {
+        return src;
+    }
+
+    @Override
+    public TunnelEndPoint dst() {
+        return dst;
+    }
+
+    @Override
+    public Tunnel.Type type() {
+        return type;
+    }
+
+    @Override
+    public GroupId groupId() {
+        return groupId;
+    }
+
+    @Override
+    public ProviderId producerName() {
+        return producerName;
+    }
+
+    @Override
+    public TunnelName tunnelName() {
+        return tunnelName;
+    }
+
+
+    @Override
+    public Path path() {
+        return path;
+    }
+
+    @Override
+    public NetworkResource resource() {
+        return networkRes;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("tunnelId", id())
+                .add("src", src())
+                .add("dst", dst())
+                .add("type", type())
+                .add("tunnelName", tunnelName())
+                .add("producerName", producerName())
+                .add("groupId", groupId())
+                .add("path", path)
+                .add("resource", networkRes)
+                .toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnelStatistics.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnelStatistics.java
new file mode 100644
index 0000000..07a8540
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DefaultTunnelStatistics.java
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+
+import java.time.Duration;
+import java.util.List;
+
+/**
+ * Default implementation of immutable tunnel statistics.
+ */
+@Beta
+public final class DefaultTunnelStatistics implements TunnelStatistics {
+    private final TunnelId tunnelId;
+    private final double bwUtilization;
+    private final double packetLossRatio;
+    private final Duration flowDelay;
+    private final List<String> alarms;
+
+    private DefaultTunnelStatistics(TunnelId tunnelId,
+                                    double bwUtilization,
+                                    double packetLossRatio,
+                                    Duration flowDelay,
+                                    List<String> alarms) {
+        this.tunnelId = tunnelId;
+        this.bwUtilization = bwUtilization;
+        this.packetLossRatio = packetLossRatio;
+        this.flowDelay = flowDelay;
+        this.alarms = alarms;
+    }
+
+    private DefaultTunnelStatistics() {
+        this.tunnelId = null;
+        this.bwUtilization = 0;
+        this.packetLossRatio = 0;
+        this.flowDelay = null;
+        this.alarms = null;
+    }
+
+
+    @Override
+    public TunnelId id() {
+        return this.tunnelId;
+    }
+
+    @Override
+    public double bandwidthUtilization() {
+        return this.bwUtilization;
+    }
+
+    @Override
+    public double packetLossRate() {
+        return this.packetLossRatio;
+    }
+
+    @Override
+    public Duration flowDelay() {
+        return this.flowDelay;
+    }
+
+
+    @Override
+    public List<String> alarms() {
+        return this.alarms;
+    }
+
+    /**
+     * Builder for tunnelStatistics.
+     */
+    public static final class Builder {
+        TunnelId tunnelId;
+        double bwUtilization;
+        double packetLossRatio;
+        Duration flowDelay;
+        List<String> alarms;
+
+        public Builder() {
+
+        }
+
+        /**
+         * Set tunnel id.
+         *
+         * @param tunnelId tunnel id
+         * @return builder object
+         */
+        public Builder setTunnelId(TunnelId tunnelId) {
+            this.tunnelId = tunnelId;
+
+            return this;
+        }
+
+        /**
+         * set bandwidth utilization.
+         *
+         * @param bwUtilization bandwidth utilization
+         * @return builder object
+         */
+        public Builder setBwUtilization(double bwUtilization) {
+            this.bwUtilization = bwUtilization;
+
+            return this;
+        }
+
+        /**
+         * Set packet loss ratio.
+         *
+         * @param packetLossRatio packet loss ratio
+         * @return builder object
+         */
+        public Builder setPacketLossRatio(double packetLossRatio) {
+            this.packetLossRatio = packetLossRatio;
+
+            return this;
+        }
+
+        /**
+         * Set flow delay.
+         *
+         * @param flowDelay flow delay
+         * @return builder object
+         */
+        public Builder setFlowDelay(Duration flowDelay) {
+            this.flowDelay = flowDelay;
+
+            return this;
+        }
+
+        /**
+         * Set alarms.
+         *
+         * @param alarms alarms of a tunnel
+         * @return builder object
+         */
+        public Builder setAlarms(List<String> alarms) {
+            this.alarms = alarms;
+
+            return this;
+        }
+
+        /**
+         * Creates a TunnelStatistics object.
+         *
+         * @return DefaultTunnelStatistics
+         */
+        public DefaultTunnelStatistics build() {
+            return new DefaultTunnelStatistics(tunnelId,
+                                               bwUtilization,
+                                               packetLossRatio,
+                                               flowDelay,
+                                               alarms);
+        }
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DomainTunnelId.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DomainTunnelId.java
new file mode 100644
index 0000000..77e14fb
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/DomainTunnelId.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import org.onlab.util.Identifier;
+
+/**
+ * A wrapper class for a long used to identify domain level tunnels.
+ */
+public final class DomainTunnelId extends Identifier<Long> {
+
+    /**
+     * Creates a tunnel identifier from the specified tunnel.
+     *
+     * @param value long value
+     * @return domain tunnel identifier
+     */
+    public static DomainTunnelId valueOf(long value) {
+        return new DomainTunnelId(value);
+    }
+
+    /**
+     * Creates a tunnel identifier from the specified tunnel.
+     *
+     * @param value long value as a string
+     * @return domain tunnel identifier
+     */
+    public static DomainTunnelId valueOf(String value) {
+        return new DomainTunnelId(Long.parseLong(value));
+    }
+
+    /**
+     * Constructor for serializer.
+     */
+    protected DomainTunnelId() {
+        super(0L);
+    }
+
+    /**
+     * Constructs the Domain ID corresponding to a given long value.
+     *
+     * @param value the underlying value of this domain ID
+     */
+    public DomainTunnelId(long value) {
+        super(value);
+    }
+
+    @Override
+    public String toString() {
+        return "0x" + Long.toHexString(identifier);
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java
new file mode 100644
index 0000000..c9f8ddf
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import java.util.Objects;
+
+import com.google.common.annotations.Beta;
+import org.onlab.packet.IpAddress;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Represent for a tunnel point using ip address.
+ */
+@Beta
+public final class IpTunnelEndPoint implements TunnelEndPoint {
+
+    private final IpAddress ip;
+
+    /**
+     * Public construction is prohibited.
+     * @param ip ip address
+     */
+    private IpTunnelEndPoint(IpAddress ip) {
+        this.ip = ip;
+    }
+
+    /**
+     * Create a IP tunnel end point.
+     * @param ip IP address
+     * @return IpTunnelEndPoint
+     */
+    public static IpTunnelEndPoint ipTunnelPoint(IpAddress ip) {
+        return new IpTunnelEndPoint(ip);
+    }
+
+    /**
+     * Returns IP address.
+     * @return IP address
+     */
+    public IpAddress ip() {
+        return ip;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(ip);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof IpTunnelEndPoint) {
+            final IpTunnelEndPoint other = (IpTunnelEndPoint) obj;
+            return Objects.equals(this.ip, other.ip);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass()).add("ip", ip).toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/LabelStack.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/LabelStack.java
new file mode 100644
index 0000000..7976218
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/LabelStack.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.net.NetworkResource;
+
+import java.util.List;
+
+/**
+ * Representation of a label stack in a network which represents the network path.
+ */
+public interface LabelStack extends NetworkResource {
+
+    /**
+     * Returns sequence of label resources comprising the path.
+     *
+     * @return list of links
+     */
+    List<LabelResourceId> labelResources();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/NetworkTunnelId.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/NetworkTunnelId.java
new file mode 100644
index 0000000..868804e
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/NetworkTunnelId.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onlab.util.Identifier;
+
+/**
+ * Representation of a Network Tunnel Id.
+ */
+@Beta
+public final class NetworkTunnelId extends Identifier<Long> {
+    /**
+     * Creates an tunnel identifier from the specified tunnel.
+     *
+     * @param value long value
+     * @return tunnel identifier
+     */
+    public static NetworkTunnelId valueOf(long value) {
+        return new NetworkTunnelId(value);
+    }
+
+    public static NetworkTunnelId valueOf(String value) {
+        return new NetworkTunnelId(Long.parseLong(value));
+    }
+
+    /**
+     * Constructor for serializer.
+     */
+    NetworkTunnelId() {
+        super(0L);
+    }
+
+    /**
+     * Constructs the ID corresponding to a given long value.
+     *
+     * @param value the underlying value of this ID
+     */
+    public NetworkTunnelId(long value) {
+        super(value);
+    }
+
+    @Override
+    public String toString() {
+        return "0x" + Long.toHexString(identifier);
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/OpticalLogicId.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/OpticalLogicId.java
new file mode 100644
index 0000000..86e9321
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/OpticalLogicId.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import com.google.common.primitives.UnsignedLongs;
+import org.onlab.util.Identifier;
+
+/**
+ * Representation of a label Id, a logical port identifier.
+ */
+@Beta
+public final class OpticalLogicId extends Identifier<Long> {
+
+    /**
+     * Constructor, public creation is prohibited.
+     */
+    private OpticalLogicId(long id) {
+        super(id);
+    }
+
+    /**
+     * Returns the LabelId representing the specified long value.
+     *
+     * @param id identifier as long value
+     * @return LabelId
+     */
+    public static OpticalLogicId logicId(long id) {
+        return new OpticalLogicId(id);
+    }
+
+    /**
+     * Returns the LabelId representing the specified string value.
+     *
+     * @param string identifier as string value
+     * @return LabelId
+     */
+    public static OpticalLogicId logicId(String string) {
+        return new OpticalLogicId(UnsignedLongs.decode(string));
+    }
+
+    public long toLong() {
+        return identifier;
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/OpticalTunnelEndPoint.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/OpticalTunnelEndPoint.java
new file mode 100644
index 0000000..0dccd35
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/OpticalTunnelEndPoint.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import java.util.Optional;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.Annotated;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.NetworkResource;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.Provided;
+
+/**
+ * Generic representation of a logical port entity in a consistent way,
+ * it is used to identify e.g., ODUk timeSlot, WDM lambda, etc.
+ * It supports nested case.
+ */
+@Beta
+public interface OpticalTunnelEndPoint extends TunnelEndPoint, Annotated, Provided, NetworkResource {
+
+    /** Represents coarse tunnel point type classification. */
+    public enum Type {
+        /**
+         * Signifies optical data unit-based tunnel point.
+         */
+        TIMESLOT,
+
+        /**
+         * Signifies optical wavelength-based tunnel point.
+         */
+        LAMBDA
+    }
+
+    /**
+     * Returns the identifier.
+     *
+     * @return identifier
+     */
+    OpticalLogicId id();
+
+    /**
+     * Returns the parent network element to which this tunnel point belongs.
+     *
+     * @return parent network element
+     */
+    Optional<ElementId> elementId();
+
+    /**
+     * Returns the parent network port to which this tunnel point belongs, can not be be null.
+     *
+     * @return port number
+     */
+    Optional<PortNumber> portNumber();
+
+    /**
+     * Returns the parent tunnel point to which this tunnel point belongs, optional.
+     *
+     * @return parent tunnel point, if it is null, the parent is a physical port
+     */
+    Optional<OpticalTunnelEndPoint> parentPoint();
+
+    /**
+     * Indicates whether or not the port is global significant.
+     *
+     * @return true if the port is global significant
+     */
+    boolean isGlobal();
+
+    /**
+     * Returns the tunnel point type.
+     *
+     * @return tunnel point type
+     */
+    Type type();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/Tunnel.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/Tunnel.java
new file mode 100644
index 0000000..603f27a
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/Tunnel.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.Annotated;
+import org.onosproject.net.NetworkResource;
+import org.onosproject.net.Path;
+import org.onosproject.net.Provided;
+
+/**
+ * Abstraction of a generalized Tunnel entity (bandwidth pipe) for either L3/L2
+ * networks or L1/L0 networks, representation of e.g., VLAN, GRE tunnel, MPLS
+ * LSP, L1 ODUk connection, WDM OCH, etc.. Each Tunnel is associated with at
+ * least two tunnel end point objects that model the logical ports essentially.
+ * Note that it supports nested case.
+ */
+@Beta
+public interface Tunnel extends Annotated, Provided, NetworkResource {
+
+    /**
+     * Tunnel technology type.
+     */
+    enum Type {
+        /**
+         * Signifies that this is a MPLS tunnel.
+         */
+        MPLS,
+        /**
+         * Signifies that this is a L2 tunnel.
+         */
+        VLAN,
+        /**
+         * Signifies that this is a DC L2 extension tunnel.
+         */
+        VXLAN,
+        /**
+         * Signifies that this is a L3 tunnel.
+         */
+        GRE,
+        /**
+         * Signifies that this is a L1 OTN tunnel.
+         */
+        ODUK,
+        /**
+         * Signifies that this is a L0 OCH tunnel.
+         */
+        OCH
+    }
+
+    /**
+     * Representation of the tunnel state.
+     */
+    public enum State {
+        /**
+         * Signifies that a tunnel is currently in a initialized state.
+         */
+        INIT,
+        /**
+         * Signifies that a tunnel is currently established but no traffic.
+         */
+        ESTABLISHED,
+        /**
+         * Signifies that a tunnel is currently active. This state means that
+         * this tunnel is available. It can be borrowed by consumer.
+         */
+        ACTIVE,
+        /**
+         * Signifies that a tunnel is currently out of service.
+         */
+        FAILED,
+        /**
+         * Signifies that a tunnel is currently inactive. This state means that
+         * this tunnel can not be borrowed by consumer.
+         */
+        INACTIVE,
+
+        /**
+         * Signifies that the tunnel's state is unreliable and should be setup again.
+         */
+        UNSTABLE,
+
+        /**
+         * Signifies that a tunnel is being established.
+         */
+        ESTABLISHING,
+
+        /**
+         * Signifies that a tunnel is being removed.
+         */
+        REMOVING
+    }
+
+    /**
+     * Returns the tunnel state.
+     *
+     * @return tunnel state
+     */
+    State state();
+
+    /**
+     * the origin of a tunnel.
+     *
+     * @return the origin of a tunnel
+     */
+    TunnelEndPoint src();
+
+    /**
+     * the terminal of a tunnel.
+     *
+     * @return the terminal of a tunnel
+     */
+    TunnelEndPoint dst();
+
+    /**
+     * Returns the tunnel type.
+     *
+     * @return tunnel type
+     */
+    Type type();
+
+    /**
+     * Returns group flow table id which a tunnel match up.
+     *
+     * @return OpenFlowGroupId
+     */
+    GroupId groupId();
+
+    /**
+     * Returns tunnel identify generated by ONOS as primary key.
+     *
+     * @return TunnelId
+     */
+    TunnelId tunnelId();
+
+    /**
+     * Return the name of a tunnel.
+     *
+     * @return Tunnel Name
+     */
+    TunnelName tunnelName();
+
+    /**
+     * Network resource backing the tunnel, e.g. lambda, VLAN id, MPLS tag.
+     *
+     * @return backing resource
+     */
+    NetworkResource resource();
+
+    /**
+     * Returns the path of the tunnel.
+     *
+     * @return the path of the tunnel
+     */
+    Path path();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelAdminService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelAdminService.java
new file mode 100644
index 0000000..12246a5
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelAdminService.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Service for administering the inventory of provisioned tunnels.
+ */
+@Beta
+public interface TunnelAdminService {
+
+    /**
+     * Removes the provisioned tunnel.
+     *
+     * @param tunnelId tunnel ID
+     */
+    void removeTunnel(TunnelId tunnelId);
+
+    /**
+     * Removes the provisioned tunnel leading to and from the
+     * specified labels.
+     *
+     * @param src source label
+     * @param dst destination label
+     * @param producerName producer name
+     */
+    void removeTunnels(TunnelEndPoint src, TunnelEndPoint dst, ProviderId producerName);
+
+    /**
+     * Removes all provisioned tunnels leading to and from the
+     * specified connection point.
+     *
+     * @param src source connection point
+     * @param dst destination connection point
+     * @param type tunnel type
+     * @param producerName producer name
+     */
+    void removeTunnels(TunnelEndPoint src, TunnelEndPoint dst, Tunnel.Type type, ProviderId producerName);
+
+    /**
+     * Invokes the core to update a tunnel based on specified tunnel parameters.
+     *
+     * @param tunnel Tunnel
+     * @param path explicit route (path changed) or null (path not changed) for the tunnel
+     */
+    void updateTunnel(Tunnel tunnel, Path path);
+
+    /**
+     * Updates the state of a tunnel.
+     *
+     * @param tunnel tunnel to be changed
+     * @param state new state of the tunnel
+     */
+    void updateTunnelState(Tunnel tunnel, Tunnel.State state);
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelDescription.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelDescription.java
new file mode 100644
index 0000000..0444c38
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelDescription.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.GroupId;
+import org.onosproject.incubator.net.tunnel.Tunnel.Type;
+import org.onosproject.net.Annotated;
+import org.onosproject.net.Description;
+import org.onosproject.net.NetworkResource;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Describes a tunnel.
+ */
+@Beta
+public interface TunnelDescription extends Description, Annotated {
+
+    /**
+     * Returns the tunnel id.
+     *
+     * @return tunnelId
+     */
+    TunnelId id();
+
+    /**
+     * Returns the connection point source.
+     *
+     * @return tunnel source ConnectionPoint
+     */
+    TunnelEndPoint src();
+
+    /**
+     * Returns the connection point destination.
+     *
+     * @return tunnel destination
+     */
+    TunnelEndPoint dst();
+
+    /**
+     * Returns the tunnel type.
+     *
+     * @return tunnel type
+     */
+    Type type();
+
+    /**
+     * Returns group flow table id which a tunnel match up.
+     *
+     * @return OpenFlowGroupId
+     */
+    GroupId groupId();
+
+    /**
+     * Returns tunnel producer name.
+     *
+     * @return producer name
+     */
+    ProviderId producerName();
+
+    /**
+     * Return the name of a tunnel.
+     *
+     * @return Tunnel Name
+     */
+    TunnelName tunnelName();
+
+    /**
+     * Returns the path of the tunnel.
+     *
+     * @return the path of the tunnel
+     */
+    Path path();
+
+    /**
+     * Returns the network resource backing the tunnel, e.g. lambda, VLAN id, MPLS tag, label stack.
+     *
+     * @return backing resource
+     */
+    NetworkResource resource();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEndPoint.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEndPoint.java
new file mode 100644
index 0000000..4d6fe68
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEndPoint.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * Represents for source end point or destination end point of a tunnel. Maybe a tunnel
+ * based on ConnectPoint, IpAddress, MacAddress and so on is built.
+ */
+@Beta
+public interface TunnelEndPoint {
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEndPointFormatter.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEndPointFormatter.java
new file mode 100644
index 0000000..ac1cd07
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEndPointFormatter.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+
+import com.google.common.annotations.Beta;
+import org.onosproject.ui.table.CellFormatter;
+import org.onosproject.ui.table.cell.AbstractCellFormatter;
+
+import java.util.Optional;
+
+/**
+ * Formats an optical tunnel endpoint as "(type)/(element-id)/(port)".
+ * Formats an IP tunnel endpoint as "ip".
+ */
+@Beta
+public final class TunnelEndPointFormatter extends AbstractCellFormatter {
+    //non-instantiable
+    private TunnelEndPointFormatter() {
+    }
+
+    private String safeOptional(Optional<?> optional) {
+        return optional.isPresent() ? optional.get().toString() : QUERY;
+    }
+
+    @Override
+    protected String nonNullFormat(Object value) {
+
+        if (value instanceof DefaultOpticalTunnelEndPoint) {
+            DefaultOpticalTunnelEndPoint ep =
+                    (DefaultOpticalTunnelEndPoint) value;
+
+            String e = safeOptional(ep.elementId());
+            String p = safeOptional(ep.portNumber());
+            return ep.type() + SLASH + e + SLASH + p;
+
+        } else if (value instanceof IpTunnelEndPoint) {
+            IpTunnelEndPoint cp = (IpTunnelEndPoint) value;
+            return cp.ip().toString();
+        }
+        return EMPTY;
+    }
+
+    /**
+     * An instance of this class.
+     */
+    public static final CellFormatter INSTANCE = new TunnelEndPointFormatter();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEvent.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEvent.java
new file mode 100644
index 0000000..5d97ba8
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelEvent.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Describes tunnel events.
+ */
+@Beta
+public final class TunnelEvent extends AbstractEvent<TunnelEvent.Type, Tunnel> {
+
+    /**
+     * Type of tunnel events.
+     */
+    public enum Type {
+        /**
+         * Signifies that a new tunnel has been added.
+         */
+        TUNNEL_ADDED,
+
+        /**
+         * Signifies that a tunnel has been updated or changed state.
+         */
+        TUNNEL_UPDATED,
+
+        /**
+         * Signifies that a tunnel has been removed.
+         */
+        TUNNEL_REMOVED
+    }
+
+    /**
+     * Creates an event of a given type and for the specified tunnel.
+     *
+     * @param type tunnel event type
+     * @param tunnel event tunnel subject
+     */
+    public TunnelEvent(Type type, Tunnel tunnel) {
+        super(type, tunnel);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified link and
+     * the current time.
+     *
+     * @param type tunnel event type
+     * @param tunnel event tunnel subject
+     * @param time occurrence time
+     */
+    public TunnelEvent(Type type, Tunnel tunnel, long time) {
+        super(type, tunnel, time);
+    }
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelId.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelId.java
new file mode 100644
index 0000000..a28b53c
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelId.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onlab.util.Identifier;
+
+/**
+ * Representation of a Tunnel Id.
+ */
+@Beta
+public final class TunnelId extends Identifier<String> {
+    /**
+     * Creates an tunnel identifier from the specified tunnel.
+     *
+     * @param value string value
+     * @return tunnel identifier
+     */
+    public static TunnelId valueOf(String value) {
+        return new TunnelId(value);
+    }
+
+    /**
+     * Constructor for serializer.
+     */
+    TunnelId() {
+        super("0");
+    }
+
+    /**
+     * Constructs the ID corresponding to a given string value.
+     *
+     * @param value the underlying value of this ID
+     */
+    TunnelId(String value) {
+        super(value);
+    }
+
+    @Override
+    public String toString() {
+        return id();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelListener.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelListener.java
new file mode 100644
index 0000000..3394dfd
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelListener.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of receiving tunnel related events.
+ */
+@Beta
+public interface TunnelListener extends EventListener<TunnelEvent> {
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelName.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelName.java
new file mode 100644
index 0000000..f15d47b
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelName.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+
+import java.util.Objects;
+
+/**
+ * Represents for a unique tunnel name. TunnelId is generated by ONOS while
+ * TunnelName is given by producer. The consumer can borrow tunnels with
+ * TunnelId or TunnelName.
+ */
+@Beta
+public final class TunnelName {
+    private final String str;
+
+    // Default constructor for serialization
+    private TunnelName(String tunnelName) {
+        this.str = tunnelName;
+    }
+
+
+    /**
+     * Creates a tunnel name using the supplied URI string.
+     *
+     * @param tunnelName tunnel name string
+     * @return tunnel name object
+     */
+    public static TunnelName tunnelName(String tunnelName) {
+        return new TunnelName(tunnelName);
+    }
+
+    /**
+     * The string of tunnel name.
+     *
+     * @return the string of tunnel name
+     */
+    public String value() {
+        return str;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(str);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof TunnelName) {
+            final TunnelName that = (TunnelName) obj;
+            return this.getClass() == that.getClass()
+                    && Objects.equals(this.str, that.str);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return str;
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProvider.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProvider.java
new file mode 100644
index 0000000..05d2783
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProvider.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.Provider;
+
+/**
+ * Abstraction of an entity providing tunnel setup/release services to the core.
+ */
+@Beta
+public interface TunnelProvider extends Provider {
+
+    /**
+     * Instructs the provider to setup a tunnel. It's used by consumers.
+     *
+     * @param tunnel Tunnel
+     * @param path explicit route or null for the tunnel
+     */
+    void setupTunnel(Tunnel tunnel, Path path);
+
+    /**
+     * Instructs the provider to setup a tunnel given the respective device.
+     * It's used by consumers.
+     *
+     * @param srcElement device
+     * @param tunnel Tunnel
+     * @param path explicit route (not null) for the tunnel
+     */
+    void setupTunnel(ElementId srcElement, Tunnel tunnel, Path path);
+
+    /**
+     * Instructs the provider to release a tunnel. It's used by consumers.
+     *
+     * @param tunnel Tunnel
+     */
+    void releaseTunnel(Tunnel tunnel);
+
+    /**
+     * Instructs the provider to release a tunnel given the respective device.
+     * It's used by consumers.
+     *
+     * @param srcElement device
+     * @param tunnel Tunnel
+     */
+    void releaseTunnel(ElementId srcElement, Tunnel tunnel);
+
+    /**
+     * Instructs the provider to update a tunnel. It's used by consumers. Maybe
+     * some consumers enable to update a tunnel.
+     *
+     * @param tunnel Tunnel
+     * @param path explicit route (path changed) or null (path not changed) for
+     *            the tunnel
+     */
+    void updateTunnel(Tunnel tunnel, Path path);
+
+    /**
+     * Instructs the provider to update a tunnel given the respective device.
+     * It's used by consumers. Maybe some consumers enable to update a tunnel.
+     *
+     * @param srcElement device
+     * @param tunnel Tunnel
+     * @param path explicit route (path changed) or null (path not changed) for
+     *            the tunnel
+     */
+    void updateTunnel(ElementId srcElement, Tunnel tunnel, Path path);
+
+    /**
+     * Signals that the provider has added a tunnel. It's used by producers.
+     *
+     * @param tunnel tunnel information
+     * @return tunnel identity
+     */
+    TunnelId tunnelAdded(TunnelDescription tunnel);
+
+    /**
+     * Signals that the provider has removed a tunnel. It's used by producers.
+     *
+     * @param tunnel tunnel information
+     */
+    void tunnelRemoved(TunnelDescription tunnel);
+
+    /**
+     * Signals that the a tunnel was changed (e.g., sensing changes of
+     * tunnel).It's used by producers.
+     *
+     * @param tunnel tunnel information
+     */
+    void tunnelUpdated(TunnelDescription tunnel);
+
+    /**
+     * Signals that the a tunnel was queried.
+     * It's used by producers.
+     * @param tunnelId tunnel identity
+     * @return tunnel entity
+     */
+    Tunnel tunnelQueryById(TunnelId tunnelId);
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProviderRegistry.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProviderRegistry.java
new file mode 100644
index 0000000..740e257
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProviderRegistry.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.provider.ProviderRegistry;
+
+/**
+ * Abstraction of an tunnel provider registry.
+ */
+@Beta
+public interface TunnelProviderRegistry
+        extends ProviderRegistry<TunnelProvider, TunnelProviderService> {
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProviderService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProviderService.java
new file mode 100644
index 0000000..3dcdd29
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelProviderService.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+
+import org.onosproject.incubator.net.tunnel.Tunnel.State;
+import org.onosproject.net.provider.ProviderService;
+
+/**
+ * APIs for tunnel provider to notify the tunnel subSystem.
+ */
+@Beta
+public interface TunnelProviderService extends ProviderService<TunnelProvider> {
+
+    /**
+     * Signals that the provider has added a tunnel.
+     *
+     * @param tunnel tunnel information
+     * @return tunnel identity
+     */
+    TunnelId tunnelAdded(TunnelDescription tunnel);
+
+    /**
+     * Signals that the provider has added a tunnel with a status which may not
+     * be default, hence is provided as an input.
+     *
+     * @param tunnel tunnel information
+     * @param state tunnel working status
+     * @return tunnel identity
+     */
+    TunnelId tunnelAdded(TunnelDescription tunnel, State state);
+
+    /**
+     * Signals that the provider has removed a tunnel.
+     *
+     * @param tunnel tunnel information
+     */
+    void tunnelRemoved(TunnelDescription tunnel);
+
+    /**
+     * Signals that the a tunnel was changed (e.g., sensing changes of tunnel).
+     *
+     * @param tunnel tunnel information
+     */
+    void tunnelUpdated(TunnelDescription tunnel);
+
+    /**
+     * Signals that the tunnel was changed with tunnel status change.
+     *
+     * @param tunnel tunnel information
+     * @param state tunnel working status
+     */
+    void tunnelUpdated(TunnelDescription tunnel, State state);
+
+    /**
+     * Signals that the a tunnel was queried.
+     *
+     * @param tunnelId tunnel identity
+     * @return tunnel entity
+     */
+    Tunnel tunnelQueryById(TunnelId tunnelId);
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelService.java
new file mode 100644
index 0000000..cee6310
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelService.java
@@ -0,0 +1,224 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import java.util.Collection;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.event.ListenerService;
+import org.onosproject.incubator.net.tunnel.Tunnel.Type;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.Path;
+
+/**
+ * Service for interacting with the inventory of tunnels.
+ */
+@Beta
+public interface TunnelService
+    extends ListenerService<TunnelEvent, TunnelListener> {
+
+    /**
+     * Borrows a specific tunnel. Annotations parameter is reserved.If there
+     * is no tunnel in the store, returns a "null" object, and record the tunnel subscription.
+     * Where tunnel is created, ONOS notifies this consumer actively.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelId tunnel identify generated by onos
+     * @param annotations Annotations
+     * @return Tunnel subscribed tunnel
+     */
+    Tunnel borrowTunnel(ApplicationId consumerId, TunnelId tunnelId,
+                           Annotations... annotations);
+
+    /**
+     * Borrows a specific tunnel by tunnelName. Annotations parameter is reserved.If there
+     * is no tunnel in the store, return a "null" object, and record the tunnel subscription.
+     * Where tunnel is created, ONOS notifies this consumer actively.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelName tunnel name
+     * @param annotations Annotations
+     * @return collection of subscribed Tunnels
+     */
+    Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelName tunnelName,
+                           Annotations... annotations);
+
+    /**
+     * Borrows all tunnels between source and destination. Annotations
+     * parameter is reserved.If there is no any tunnel in the store, return a
+     * empty collection,and record the tunnel subscription. Where tunnel is created, ONOS
+     * notifies this consumer actively. Otherwise ONOS core returns all the
+     * tunnels, consumer determined which one to use.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel
+     * @param annotations Annotations
+     * @return collection of subscribed Tunnels
+     */
+    Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                                       TunnelEndPoint dst, Annotations... annotations);
+
+    /**
+     * Borrows all specified type tunnels between source and destination.
+     * Annotations parameter is reserved.If there is no any tunnel in the store,
+     * return a empty collection, and record the tunnel subscription. Where tunnel is
+     * created, ONOS notifies this consumer actively. Otherwise,ONOS core returns
+     * all available tunnels, consumer determined which one to use.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel
+     * @param type tunnel type
+     * @param annotations Annotations
+     * @return collection of available Tunnels
+     */
+    Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                                       TunnelEndPoint dst, Type type,
+                                       Annotations... annotations);
+
+    /**
+     * Creates a tunnel with given path and default initial state. The state changes
+     * in due course of time based on changes happening in the network.
+     *
+     * @param producerId a tunnel producer
+     * @param srcElementId element id of the source
+     * @param tunnel to be created
+     * @param path path of the tunnel
+     * @return generated tunnel identity
+     */
+    TunnelId setupTunnel(ApplicationId producerId, ElementId srcElementId, Tunnel tunnel, Path path);
+
+    /**
+     * Triggers removal of specified tunnel.
+     *
+     * @param producerId a tunnel producer
+     * @param tunnelId identity for the tunnel to be triggered for removal
+     * @return success or failure
+     */
+    boolean downTunnel(ApplicationId producerId, TunnelId tunnelId);
+
+    /**
+     * Returns back a specific tunnel to store.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelId tunnel identify generated by ONOS
+     * @param annotations Annotations
+     * @return success or fail
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelId tunnelId,
+                              Annotations... annotations);
+
+    /**
+     * Returns all specific name tunnel back store. Annotations parameter is reserved.if there
+     * is no tunnel in the store, return a "null" object, and record the tunnel subscription.
+     * Where tunnel is created, ONOS notifies this consumer actively.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelName tunnel name
+     * @param annotations Annotations
+     * @return boolean
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelName tunnelName,
+                           Annotations... annotations);
+
+    /**
+     * Returns all specific type tunnels between source and destination back
+     * store. Annotations parameter is reserved.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel
+     * @param type tunnel type
+     * @param annotations Annotations
+     * @return success or fail
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                              TunnelEndPoint dst, Type type,
+                              Annotations... annotations);
+
+    /**
+     * Returns all tunnels between source and destination back the store.
+     * Annotations parameter is reserved.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel.
+     * @param annotations Annotations
+     * @return success or fail
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                              TunnelEndPoint dst, Annotations... annotations);
+
+    /**
+     * Returns a tunnel by a specific tunnel identity.
+     *
+     * @param tunnelId tunnel identify generated by tunnel producer
+     * @return Tunnel
+     */
+    Tunnel queryTunnel(TunnelId tunnelId);
+
+    /**
+     * Returns all tunnel subscription record by consumer.
+     *
+     * @param consumerId consumer identity
+     * @return Collection of TunnelSubscription
+     */
+    Collection<TunnelSubscription> queryTunnelSubscription(ApplicationId consumerId);
+
+    /**
+     * Returns all specified type tunnels.
+     *
+     * @param type tunnel type
+     * @return Collection of tunnels
+     */
+    Collection<Tunnel> queryTunnel(Type type);
+
+    /**
+     * Returns all tunnels between source point and destination point.
+     *
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel.
+     * @return Collection of tunnels
+     */
+    Collection<Tunnel> queryTunnel(TunnelEndPoint src, TunnelEndPoint dst);
+
+    /**
+     * Returns all tunnels.
+     *
+     * @return Collection of tunnels
+     */
+    Collection<Tunnel> queryAllTunnels();
+
+    /**
+     * Returns all tunnels.
+     *
+     * @return all tunnels
+     */
+    int tunnelCount();
+
+    /**
+     * Returns the collection of tunnels applied on the specified device.
+     *
+     * @param deviceId device identifier
+     * @return collection of tunnels
+     */
+    Iterable<Tunnel> getTunnels(DeviceId deviceId);
+
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStatistics.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStatistics.java
new file mode 100644
index 0000000..d260d26
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStatistics.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+
+import java.time.Duration;
+import java.util.List;
+
+/**
+ * Statistics of a tunnel.
+ */
+@Beta
+public interface TunnelStatistics {
+
+    /**
+     * Returns the tunnel id.
+     *
+     * @return tunnelId id of tunnel
+     */
+    TunnelId id();
+
+    /**
+     * Returns the bandwidth utilization of a tunnel.
+     *
+     * @return bandwidth utilization
+     */
+    double bandwidthUtilization();
+
+    /**
+     * Returns the packet loss ratio of a tunnel.
+     *
+     * @return tunnel packet loss ratio
+     */
+    double packetLossRate();
+
+    /**
+     * Returns the end-to-end traffic flow delay of a tunnel.
+     *
+     * @return tunnel flow delay
+     */
+    Duration flowDelay();
+
+    /**
+     * Returns the alarms on a tunnel.
+     *
+     * @return tunnel alarms
+     */
+    List<String> alarms();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStore.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStore.java
new file mode 100644
index 0000000..b4f4a8c
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStore.java
@@ -0,0 +1,239 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import java.util.Collection;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.incubator.net.tunnel.Tunnel.State;
+import org.onosproject.incubator.net.tunnel.Tunnel.Type;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.store.Store;
+
+/**
+ * Manages inventory of tunnel; not intended for direct use.
+ */
+@Beta
+public interface TunnelStore extends Store<TunnelEvent, TunnelStoreDelegate> {
+    /**
+     * Creates or updates a tunnel.
+     *
+     * @param tunnel tunnel
+     * @return tunnel identity
+     */
+    TunnelId createOrUpdateTunnel(Tunnel tunnel);
+
+    /**
+     * Creates a tunnel or updates a tunnel with the new state given in input.
+     *
+     * @param tunnel tunnel
+     * @param state tunnel state
+     * @return tunnel identity
+     */
+    TunnelId createOrUpdateTunnel(Tunnel tunnel, State state);
+
+    /**
+     * Deletes a tunnel by a specific tunnel identifier.
+     *
+     * @param tunnelId tunnel unique identifier generated by ONOS
+     */
+    void deleteTunnel(TunnelId tunnelId);
+
+    /**
+     * Deletes all tunnels between source point and destination point.
+     *
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel.
+     * @param producerName producerName
+     */
+    void deleteTunnel(TunnelEndPoint src, TunnelEndPoint dst,
+                                  ProviderId producerName);
+
+    /**
+     * Deletes all specific type tunnels between source point and destination
+     * point.
+     *
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel.
+     * @param type tunnel type
+     * @param producerName producerName
+     */
+    void deleteTunnel(TunnelEndPoint src, TunnelEndPoint dst,
+                                  Tunnel.Type type, ProviderId producerName);
+
+    /**
+     * Returns a specific tunnel. Annotations parameter is reserved. If there
+     * is no tunnel in the store, return a "null" object, and record the tunnel subscription.
+     * Where tunnel is created, ONOS notifies this consumer actively.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelId tunnel identify generated by onos
+     * @param annotations parameter
+     * @return Tunnel subscribed tunnel
+     */
+    Tunnel borrowTunnel(ApplicationId consumerId, TunnelId tunnelId,
+                           Annotations... annotations);
+
+    /**
+     * Returns a specific tunnel by tunnelName. Annotations parameter is
+     * reserved. If there is no tunnel in the store, return a "null" object,and
+     * record the tunnel subscription. Where tunnel is created, ONOS notifies this consumer
+     * actively.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelName tunnel name
+     * @param annotations parameter
+     * @return collection of subscribed Tunnels
+     */
+    Collection<Tunnel> borrowTunnel(ApplicationId consumerId,
+                                       TunnelName tunnelName,
+                                       Annotations... annotations);
+
+    /**
+     * Returns all tunnels between source and destination. Annotations
+     * parameter is reserved. If there is no any tunnel in the store, return a
+     * empty collection, and record the tunnel subscription. Where tunnel is created, ONOS
+     * notifies this consumer actively. Otherwise ONOS core returns all the
+     * tunnels, consumer determined which one to use.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel
+     * @param annotations parameter
+     * @return collection of subscribed Tunnels
+     */
+    Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                                       TunnelEndPoint dst, Annotations... annotations);
+
+    /**
+     * Returns all specified type tunnels between source and destination.
+     * Annotations parameter is reserved. If there is no any tunnel in the store,
+     * return a empty collection, and record the tunnel subscription. Where tunnel is
+     * created, ONOS notifies this consumer actively. Otherwise,ONOS core returns
+     * all available tunnels, consumer determined which one to use.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel
+     * @param type tunnel type
+     * @param annotations Annotations
+     * @return collection of available Tunnels
+     */
+    Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                                       TunnelEndPoint dst, Type type,
+                                       Annotations... annotations);
+
+    /**
+     * Returns back a specific tunnel to store.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelId tunnel identify generated by ONOS
+     * @param annotations Annotations
+     * @return success or fail
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelId tunnelId,
+                              Annotations... annotations);
+
+    /**
+     * Returns all specific name tunnel back store. Annotations parameter is
+     * reserved.If there is no tunnel in the store, return a "null" object,and
+     * record the tunnel subscription. Where tunnel is created, ONOS notifies this consumer
+     * actively.
+     *
+     * @param consumerId a tunnel consumer
+     * @param tunnelName tunnel name
+     * @param annotations Annotations
+     * @return boolean
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelName tunnelName,
+                              Annotations... annotations);
+
+    /**
+     * Returns all specific type tunnels between source and destination back
+     * store. Annotations parameter is reserved.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel
+     * @param type tunnel type
+     * @param annotations Annotations
+     * @return success or fail
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                              TunnelEndPoint dst, Type type,
+                              Annotations... annotations);
+
+    /**
+     * Returns all tunnels between source and destination back the store.
+     * Annotations parameter is reserved.
+     *
+     * @param consumerId a tunnel consumer
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel.
+     * @param annotations Annotations
+     * @return success or fail
+     */
+    boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                              TunnelEndPoint dst, Annotations... annotations);
+
+    /**
+     * Returns a tunnel by a specific tunnel identity.
+     *
+     * @param tunnelId tunnel identify generated by tunnel producer
+     * @return Tunnel
+     */
+    Tunnel queryTunnel(TunnelId tunnelId);
+
+    /**
+     * Returns all tunnel subscription record by consumer.
+     *
+     * @param consumerId consumer identity
+     * @return Collection of TunnelSubscription
+     */
+    Collection<TunnelSubscription> queryTunnelSubscription(ApplicationId consumerId);
+
+    /**
+     * Returns all specified type tunnels.
+     *
+     * @param type tunnel type
+     * @return Collection of tunnels
+     */
+    Collection<Tunnel> queryTunnel(Type type);
+
+    /**
+     * Returns all tunnels between source point and destination point.
+     *
+     * @param src a source point of tunnel.
+     * @param dst a destination point of tunnel.
+     * @return Collection of tunnels
+     */
+    Collection<Tunnel> queryTunnel(TunnelEndPoint src, TunnelEndPoint dst);
+
+    /**
+     * Returns all tunnels.
+     *
+     * @return Collection of tunnels
+     */
+    Collection<Tunnel> queryAllTunnels();
+
+    /**
+     * Returns all tunnels.
+     * @return all tunnels
+     */
+    int tunnelCount();
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStoreDelegate.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStoreDelegate.java
new file mode 100644
index 0000000..e94cfaa
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelStoreDelegate.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * Tunnel store delegate abstraction.
+ */
+@Beta
+public interface TunnelStoreDelegate extends StoreDelegate<TunnelEvent> {
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelSubscription.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelSubscription.java
new file mode 100644
index 0000000..b0e5384
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/TunnelSubscription.java
@@ -0,0 +1,156 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.Objects;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.AbstractAnnotated;
+import org.onosproject.net.Annotations;
+import org.onosproject.incubator.net.tunnel.Tunnel.Type;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Represents for a order that consumer subscribe tunnel. ONOS maintains request
+ * information, it means ONOS knows how much resource echo consumer uses in the
+ * ONOS. Although there is no a tunnel that consumer want to use, when producer
+ * creates a new tunnel, ONOS will notify the consumers that want to use it.
+ */
+@Beta
+public final class TunnelSubscription extends AbstractAnnotated {
+    private final ApplicationId consumerId;
+    private final TunnelEndPoint src;
+    private final TunnelEndPoint dst;
+    private final Type type;
+    private final TunnelId tunnelId;
+    private final TunnelName tunnelName;
+
+    /**
+     * Creates a TunnelSubscription.
+     *
+     * @param consumerId consumer identity
+     * @param src source tunnel end point of tunnel
+     * @param dst destination tunnel end point of tunnel
+     * @param tunnelId tunnel identity
+     * @param type tunnel type
+     * @param tunnelName the name of a tunnel
+     * @param annotations parameter
+     */
+    public TunnelSubscription(ApplicationId consumerId, TunnelEndPoint src,
+                 TunnelEndPoint dst, TunnelId tunnelId, Type type,
+                 TunnelName tunnelName, Annotations... annotations) {
+        super(annotations);
+        checkNotNull(consumerId, "consumerId cannot be null");
+        this.consumerId = consumerId;
+        this.src = src;
+        this.dst = dst;
+        this.type = type;
+        this.tunnelId = tunnelId;
+        this.tunnelName = tunnelName;
+    }
+
+    /**
+     * Returns consumer identity.
+     *
+     * @return consumerId consumer id
+     */
+    public ApplicationId consumerId() {
+        return consumerId;
+    }
+
+    /**
+     * Returns source point of tunnel.
+     *
+     * @return source point
+     */
+    public TunnelEndPoint src() {
+        return src;
+    }
+
+    /**
+     * Returns destination point of tunnel.
+     *
+     * @return destination point
+     */
+    public TunnelEndPoint dst() {
+        return dst;
+    }
+
+    /**
+     * Returns tunnel type.
+     *
+     * @return tunnel type
+     */
+    public Type type() {
+        return type;
+    }
+
+    /**
+     * Returns tunnel identity.
+     *
+     * @return tunnel id
+     */
+    public TunnelId tunnelId() {
+        return tunnelId;
+    }
+
+    /**
+     * Returns tunnel name.
+     *
+     * @return tunnel name
+     */
+    public TunnelName tunnelName() {
+        return tunnelName;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(consumerId, src, dst, type, tunnelId, tunnelName);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof TunnelSubscription) {
+            final TunnelSubscription other = (TunnelSubscription) obj;
+            return Objects.equals(this.src, other.src)
+                    && Objects.equals(this.dst, other.dst)
+                    && Objects.equals(this.consumerId, other.consumerId)
+                    && Objects.equals(this.type, other.type)
+                    && Objects.equals(this.tunnelId, other.tunnelId)
+                    && Objects.equals(this.tunnelName, other.tunnelName);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("src", src)
+                .add("dst", dst)
+                .add("consumerId", consumerId)
+                .add("type", type)
+                .add("tunnelId", tunnelId)
+                .add("tunnelName", tunnelName).toString();
+    }
+}
diff --git a/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/package-info.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/package-info.java
new file mode 100644
index 0000000..86e21f8
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/tunnel/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Tunnel model related services and providers API definitions.
+ */
+package org.onosproject.incubator.net.tunnel;
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/DefaultLabelResourceTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/DefaultLabelResourceTest.java
new file mode 100644
index 0000000..9aabf06
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/DefaultLabelResourceTest.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import org.junit.Test;
+import org.onosproject.event.AbstractEventTest;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Tests of default label resource.
+ */
+public class DefaultLabelResourceTest extends AbstractEventTest {
+
+    @Test
+    public void testEquality() {
+        String deviceId1 = "of:001";
+        String deviceId2 = "of:002";
+        long labelResourceId1 = 100;
+        long labelResourceId2 = 200;
+        DefaultLabelResource h1 = new DefaultLabelResource(deviceId1,
+                                                           labelResourceId1);
+        DefaultLabelResource h2 = new DefaultLabelResource(deviceId1,
+                                                           labelResourceId1);
+        DefaultLabelResource h3 = new DefaultLabelResource(deviceId2,
+                                                           labelResourceId2);
+        DefaultLabelResource h4 = new DefaultLabelResource(deviceId2,
+                                                           labelResourceId2);
+
+        new EqualsTester().addEqualityGroup(h1, h2).addEqualityGroup(h3, h4)
+                .testEquals();
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourceAdapter.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourceAdapter.java
new file mode 100644
index 0000000..d09a1de
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourceAdapter.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2016-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import com.google.common.collect.Multimap;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceEvent;
+import org.onosproject.net.device.DeviceEvent.Type;
+import org.onosproject.net.device.DeviceListener;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+
+import java.util.Collection;
+import java.util.LinkedList;
+import java.util.Random;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Provides test implementation of class LabelResourceService.
+ */
+public class LabelResourceAdapter
+        extends AbstractListenerProviderRegistry<LabelResourceEvent, LabelResourceListener,
+        LabelResourceProvider, LabelResourceProviderService>
+        implements LabelResourceService, LabelResourceAdminService, LabelResourceProviderRegistry {
+    public static final long GLOBAL_LABEL_SPACE_MIN = 4097;
+    public static final long GLOBAL_LABEL_SPACE_MAX = 5121;
+    public static final long LOCAL_LABEL_SPACE_MIN = 5122;
+    public static final long LOCAL_LABEL_SPACE_MAX = 9217;
+
+    private Random random = new Random();
+
+    @Override
+    public boolean createDevicePool(DeviceId deviceId,
+                                    LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        return true;
+    }
+
+    @Override
+    public boolean createGlobalPool(LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        return true;
+    }
+
+    @Override
+    public boolean destroyDevicePool(DeviceId deviceId) {
+        return true;
+    }
+
+    @Override
+    public boolean destroyGlobalPool() {
+        return true;
+    }
+
+    public long getLabelId(long min, long max) {
+        return random.nextInt((int) max - (int) min + 1) + (int) min;
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                         long applyNum) {
+        Collection<LabelResource> labelList = new LinkedList<>();
+        LabelResource label = new DefaultLabelResource(deviceId,
+                LabelResourceId.labelResourceId(
+                        getLabelId(LOCAL_LABEL_SPACE_MIN, LOCAL_LABEL_SPACE_MAX)));
+        labelList.add(label);
+        return labelList;
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromGlobalPool(long applyNum) {
+        Collection<LabelResource> labelList = new LinkedList<>();
+        LabelResource label = new DefaultLabelResource(DeviceId.deviceId("foo"),
+                LabelResourceId.labelResourceId(
+                        getLabelId(GLOBAL_LABEL_SPACE_MIN, GLOBAL_LABEL_SPACE_MAX)));
+        labelList.add(label);
+        return labelList;
+    }
+
+    @Override
+    public boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release) {
+        return true;
+    }
+
+    @Override
+    public boolean releaseToGlobalPool(Set<LabelResourceId> release) {
+        return true;
+    }
+
+    @Override
+    public boolean isDevicePoolFull(DeviceId deviceId) {
+        return false;
+    }
+
+    @Override
+    public boolean isGlobalPoolFull() {
+        return false;
+    }
+
+    @Override
+    public long getFreeNumOfDevicePool(DeviceId deviceId) {
+        return 4;
+    }
+
+    @Override
+    public long getFreeNumOfGlobalPool() {
+        return 4;
+    }
+
+    @Override
+    public LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId) {
+        return null;
+    }
+
+    @Override
+    public LabelResourcePool getGlobalLabelResourcePool() {
+        return null;
+    }
+
+    private class InternalLabelResourceDelegate implements LabelResourceDelegate {
+        @Override
+        public void notify(LabelResourceEvent event) {
+            post(event);
+        }
+
+    }
+
+    private class InternalDeviceListener implements DeviceListener {
+        @Override
+        public void event(DeviceEvent event) {
+            Device device = event.subject();
+            if (Type.DEVICE_REMOVED.equals(event.type())) {
+                destroyDevicePool(device.id());
+            }
+        }
+    }
+
+    private class InternalLabelResourceProviderService
+            extends AbstractProviderService<LabelResourceProvider>
+            implements LabelResourceProviderService {
+
+        protected InternalLabelResourceProviderService(LabelResourceProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public void deviceLabelResourcePoolDetected(DeviceId deviceId,
+                                                    LabelResourceId beginLabel,
+                                                    LabelResourceId endLabel) {
+            checkNotNull(deviceId, "deviceId is not null");
+            checkNotNull(beginLabel, "beginLabel is not null");
+            checkNotNull(endLabel, "endLabel is not null");
+            createDevicePool(deviceId, beginLabel, endLabel);
+        }
+
+        @Override
+        public void deviceLabelResourcePoolDestroyed(DeviceId deviceId) {
+            checkNotNull(deviceId, "deviceId is not null");
+            destroyDevicePool(deviceId);
+        }
+
+    }
+
+    @Override
+    protected LabelResourceProviderService createProviderService(LabelResourceProvider provider) {
+        return null;
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourcePoolTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourcePoolTest.java
new file mode 100644
index 0000000..e4b791e
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourcePoolTest.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import org.junit.Test;
+import org.onosproject.event.AbstractEventTest;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Tests of the label resource pool.
+ */
+public class LabelResourcePoolTest extends AbstractEventTest {
+
+    @Test
+    public void testEquality() {
+        LabelResourcePool h1 = new LabelResourcePool("of:001", 0, 100);
+        LabelResourcePool h2 = new LabelResourcePool("of:001", 0, 100);
+        LabelResourcePool h3 = new LabelResourcePool("of:002", 0, 100);
+        LabelResourcePool h4 = new LabelResourcePool("of:002", 0, 100);
+        new EqualsTester().addEqualityGroup(h1, h2).addEqualityGroup(h3, h4)
+                .testEquals();
+    }
+
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourceRequestTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourceRequestTest.java
new file mode 100644
index 0000000..e379132
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/resource/label/LabelResourceRequestTest.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label;
+
+import java.util.Collections;
+
+import org.junit.Test;
+import org.onosproject.event.AbstractEventTest;
+import org.onosproject.net.DeviceId;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Tests of the label resource request.
+ */
+public class LabelResourceRequestTest extends AbstractEventTest {
+
+    @Test
+    public void testEquality() {
+        DeviceId deviceId1 = DeviceId.deviceId("of:0001");
+        DeviceId deviceId2 = DeviceId.deviceId("of:0002");
+        long apply = 2;
+        ImmutableSet<LabelResource> releaseCollection = ImmutableSet
+                .copyOf(Collections.emptySet());
+        LabelResourceRequest h1 = new LabelResourceRequest(
+                                                           deviceId1,
+                                                           LabelResourceRequest.Type.APPLY,
+                                                           apply, null);
+        LabelResourceRequest h2 = new LabelResourceRequest(
+                                                           deviceId1,
+                                                           LabelResourceRequest.Type.APPLY,
+                                                           apply, null);
+        LabelResourceRequest h3 = new LabelResourceRequest(
+                                                           deviceId2,
+                                                           LabelResourceRequest.Type.RELEASE,
+                                                           0, releaseCollection);
+        LabelResourceRequest h4 = new LabelResourceRequest(
+                                                           deviceId2,
+                                                           LabelResourceRequest.Type.RELEASE,
+                                                           0, releaseCollection);
+
+        new EqualsTester().addEqualityGroup(h1, h2).addEqualityGroup(h3, h4)
+                .testEquals();
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/DefaultTunnelTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/DefaultTunnelTest.java
new file mode 100644
index 0000000..7f31523
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/DefaultTunnelTest.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.provider.ProviderId;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Test of the default tunnel model entity.
+ */
+public class DefaultTunnelTest {
+    /**
+     * Checks that the Order class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(DefaultTunnel.class);
+    }
+
+    @Test
+    public void testEquality() {
+        TunnelEndPoint src = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf(23423));
+        TunnelEndPoint dst = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf(32421));
+        GroupId groupId = new GroupId(92034);
+        TunnelName tunnelName = TunnelName.tunnelName("TunnelName");
+        TunnelId tunnelId = TunnelId.valueOf("41654654");
+        ProviderId producerName1 = new ProviderId("producer1", "13");
+        ProviderId producerName2 = new ProviderId("producer2", "13");
+        Tunnel p1 = new DefaultTunnel(producerName1, src, dst, Tunnel.Type.VXLAN,
+                                      Tunnel.State.ACTIVE, groupId, tunnelId,
+                                      tunnelName, null);
+        Tunnel p2 = new DefaultTunnel(producerName1, src, dst, Tunnel.Type.VXLAN,
+                                      Tunnel.State.ACTIVE, groupId, tunnelId,
+                                      tunnelName, null);
+        Tunnel p3 = new DefaultTunnel(producerName2, src, dst, Tunnel.Type.OCH,
+                                      Tunnel.State.ACTIVE, groupId, tunnelId,
+                                      tunnelName, null);
+        new EqualsTester().addEqualityGroup(p1, p2).addEqualityGroup(p3)
+                .testEquals();
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelEventTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelEventTest.java
new file mode 100644
index 0000000..0483b54
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelEventTest.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Test of a tunnel event.
+ */
+public class TunnelEventTest {
+    /**
+     * Checks that the Order class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(TunnelEvent.class);
+    }
+
+    /**
+     * Checks the operation of equals(), hashCode() and toString() methods.
+     */
+    @Test
+    public void testConstructor() {
+        TunnelEndPoint src = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf(23423));
+        TunnelEndPoint dst = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf(32421));
+        GroupId groupId = new GroupId(92034);
+        TunnelName tunnelName = TunnelName.tunnelName("TunnelName");
+        TunnelId tunnelId = TunnelId.valueOf("41654654");
+        ProviderId producerName1 = new ProviderId("producer1", "13");
+        Tunnel p1 = new DefaultTunnel(producerName1, src, dst, Tunnel.Type.VXLAN,
+                                      Tunnel.State.ACTIVE, groupId, tunnelId,
+                                      tunnelName, null);
+        TunnelEvent e1 = new TunnelEvent(TunnelEvent.Type.TUNNEL_ADDED, p1);
+        assertThat(e1, is(notNullValue()));
+        assertThat(e1.type(), is(TunnelEvent.Type.TUNNEL_ADDED));
+        assertThat(e1.subject(), is(p1));
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelIdTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelIdTest.java
new file mode 100644
index 0000000..50d4051
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelIdTest.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Unit tests for tunnel id class.
+ */
+public class TunnelIdTest {
+
+    final TunnelId tunnelId1 = TunnelId.valueOf("1");
+    final TunnelId sameAstunnelId1 = TunnelId.valueOf("1");
+    final TunnelId tunnelId2 = TunnelId.valueOf("2");
+
+    /**
+     * Checks that the TunnelId class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(TunnelId.class);
+    }
+
+    /**
+     * Checks the operation of equals(), hashCode() and toString() methods.
+     */
+    @Test
+    public void testEquals() {
+        new EqualsTester()
+                .addEqualityGroup(tunnelId1, sameAstunnelId1)
+                .addEqualityGroup(tunnelId2)
+                .testEquals();
+    }
+
+    /**
+     * Checks the construction of a FlowId object.
+     */
+    @Test
+    public void testConstruction() {
+        final String tunnelIdValue = "7777";
+        final TunnelId tunnelId = TunnelId.valueOf(tunnelIdValue);
+        assertThat(tunnelId, is(notNullValue()));
+        assertThat(tunnelId.id(), is(tunnelIdValue));
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelNameTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelNameTest.java
new file mode 100644
index 0000000..8e59a29
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelNameTest.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.tunnel;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Unit tests for tunnel name class.
+ */
+public class TunnelNameTest {
+    final TunnelName name1 = TunnelName.tunnelName("name1");
+    final TunnelName sameAsName1 = TunnelName.tunnelName("name1");
+    final TunnelName name2 = TunnelName.tunnelName("name2");
+
+    /**
+     * Checks that the TunnelName class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(TunnelName.class);
+    }
+
+    /**
+     * Checks the operation of equals(), hashCode() and toString() methods.
+     */
+    @Test
+    public void testEquals() {
+        new EqualsTester().addEqualityGroup(name1, sameAsName1)
+                .addEqualityGroup(name2).testEquals();
+    }
+
+    /**
+     * Checks the construction of a OpenFlowGroupId object.
+     */
+    @Test
+    public void testConstruction() {
+        final String nameValue = "name3";
+        final TunnelName name = TunnelName.tunnelName(nameValue);
+        assertThat(name, is(notNullValue()));
+        assertThat(name.value(), is(nameValue));
+    }
+
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelServiceAdapter.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelServiceAdapter.java
new file mode 100644
index 0000000..dcf3666
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelServiceAdapter.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.Path;
+
+import java.util.Collection;
+import java.util.Collections;
+
+public class TunnelServiceAdapter implements TunnelService {
+    @Override
+    public Tunnel borrowTunnel(ApplicationId consumerId, TunnelId tunnelId, Annotations... annotations) {
+        return null;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelName tunnelName,
+                                           Annotations... annotations) {
+        return null;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelEndPoint src, TunnelEndPoint dst,
+                                           Annotations... annotations) {
+        return null;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId consumerId, TunnelEndPoint src, TunnelEndPoint dst,
+                                           Tunnel.Type type, Annotations... annotations) {
+        return null;
+    }
+
+    @Override
+    public TunnelId setupTunnel(ApplicationId producerId, ElementId srcElementId, Tunnel tunnel, Path path) {
+        return null;
+    }
+
+    @Override
+    public boolean downTunnel(ApplicationId producerId, TunnelId tunnelId) {
+        return false;
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId, TunnelId tunnelId, Annotations... annotations) {
+        return false;
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId, TunnelName tunnelName, Annotations... annotations) {
+        return false;
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src, TunnelEndPoint dst,
+                                Tunnel.Type type, Annotations... annotations) {
+        return false;
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src, TunnelEndPoint dst,
+                                Annotations... annotations) {
+        return false;
+    }
+
+    @Override
+    public Tunnel queryTunnel(TunnelId tunnelId) {
+        return null;
+    }
+
+    @Override
+    public Collection<TunnelSubscription> queryTunnelSubscription(ApplicationId consumerId) {
+        return Collections.emptySet();
+    }
+
+    @Override
+    public Collection<Tunnel> queryTunnel(Tunnel.Type type) {
+        return Collections.emptySet();
+    }
+
+    @Override
+    public Collection<Tunnel> queryTunnel(TunnelEndPoint src, TunnelEndPoint dst) {
+        return Collections.emptySet();
+    }
+
+    @Override
+    public Collection<Tunnel> queryAllTunnels() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public int tunnelCount() {
+        return 0;
+    }
+
+    @Override
+    public Iterable<Tunnel> getTunnels(DeviceId deviceId) {
+        return null;
+    }
+
+    @Override
+    public void addListener(TunnelListener listener) {
+
+    }
+
+    @Override
+    public void removeListener(TunnelListener listener) {
+
+    }
+}
diff --git a/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelSubscriptionTest.java b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelSubscriptionTest.java
new file mode 100644
index 0000000..fc60ee4
--- /dev/null
+++ b/apps/tunnel/api/src/test/java/org/onosproject/incubator/net/tunnel/TunnelSubscriptionTest.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel;
+
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.DefaultApplicationId;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Test of order model entity.
+ */
+public class TunnelSubscriptionTest {
+    /**
+     * Checks that the Order class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(TunnelSubscription.class);
+    }
+
+    /**
+     * Checks the operation of equals(), hashCode() and toString() methods.
+     */
+    @Test
+    public void testEquality() {
+        TunnelEndPoint src = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(23423));
+        TunnelEndPoint dst = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(32421));
+        ApplicationId appId = new DefaultApplicationId(243, "test");
+        ApplicationId appId2 = new DefaultApplicationId(2431, "test1");
+        TunnelId tunnelId = TunnelId.valueOf("41654654");
+        TunnelSubscription p1 = new TunnelSubscription(appId, src, dst, tunnelId, Tunnel.Type.VXLAN,
+                             null);
+        TunnelSubscription p2 = new TunnelSubscription(appId, src, dst, tunnelId, Tunnel.Type.VXLAN,
+                             null);
+        TunnelSubscription p3 = new TunnelSubscription(appId2, src, dst, tunnelId, Tunnel.Type.VXLAN,
+                             null);
+        new EqualsTester().addEqualityGroup(p1, p2).addEqualityGroup(p3)
+                .testEquals();
+    }
+}
diff --git a/apps/tunnel/app/BUILD b/apps/tunnel/app/BUILD
new file mode 100644
index 0000000..82a8cac
--- /dev/null
+++ b/apps/tunnel/app/BUILD
@@ -0,0 +1,12 @@
+COMPILE_DEPS = CORE_DEPS + JACKSON + REST + CLI + [
+    "//core/store/serializers:onos-core-serializers",
+    "//apps/tunnel/api:onos-apps-tunnel-api",
+]
+
+TEST_DEPS = TEST_ADAPTERS
+
+osgi_jar_with_tests(
+    test_deps = TEST_DEPS,
+    visibility = ["//visibility:public"],
+    deps = COMPILE_DEPS,
+)
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/domain/impl/IntentDomainManager.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/domain/impl/IntentDomainManager.java
new file mode 100644
index 0000000..5d0270b
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/domain/impl/IntentDomainManager.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.domain.impl;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+import org.onosproject.incubator.net.domain.IntentDomain;
+import org.onosproject.incubator.net.domain.IntentDomainEvent;
+import org.onosproject.incubator.net.domain.IntentDomainId;
+import org.onosproject.incubator.net.domain.IntentDomainListener;
+import org.onosproject.incubator.net.domain.IntentDomainProvider;
+import org.onosproject.incubator.net.domain.IntentDomainProviderRegistry;
+import org.onosproject.incubator.net.domain.IntentDomainProviderService;
+import org.onosproject.incubator.net.domain.IntentDomainService;
+import org.onosproject.incubator.net.domain.IntentPrimitive;
+import org.onosproject.incubator.net.domain.IntentResource;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ConcurrentMap;
+import java.util.stream.Collectors;
+
+/**
+ * Implementation of the intent domain service.
+ */
+@Component(immediate = true, service = {IntentDomainService.class, IntentDomainProviderRegistry.class})
+public class IntentDomainManager
+        extends AbstractListenerProviderRegistry<IntentDomainEvent, IntentDomainListener,
+                    IntentDomainProvider, IntentDomainProviderService>
+        implements IntentDomainService, IntentDomainProviderRegistry {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    private final ConcurrentMap<IntentDomainId, IntentDomain> domains = Maps.newConcurrentMap();
+
+    @Activate
+    protected void activate() {
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        log.info("Stopped");
+    }
+
+    @Override
+    public IntentDomain getDomain(IntentDomainId id) {
+        return domains.get(id);
+    }
+
+    @Override
+    public Set<IntentDomain> getDomains() {
+        return ImmutableSet.copyOf(domains.values());
+    }
+
+    @Override
+    public Set<IntentDomain> getDomains(DeviceId deviceId) {
+        return domains.values().stream()
+                .filter(domain ->
+                                domain.internalDevices().contains(deviceId) ||
+                                        domain.edgePorts().stream()
+                                                .map(ConnectPoint::deviceId)
+                                                .anyMatch(d -> d.equals(deviceId)))
+                .collect(Collectors.toSet());
+    }
+
+    @Override
+    public List<IntentResource> request(IntentDomainId domainId, IntentPrimitive primitive) {
+        IntentDomain domain = getDomain(domainId);
+        return domain.provider().request(domain, primitive);
+    }
+
+    @Override
+    public void submit(IntentDomainId domainId, IntentResource resource) {
+        getDomain(domainId).provider().apply(resource);
+    }
+
+    @Override
+    protected IntentDomainProviderService createProviderService(IntentDomainProvider provider) {
+        return new InternalDomainProviderService(provider);
+    }
+
+    private class InternalDomainProviderService
+            extends AbstractProviderService<IntentDomainProvider>
+            implements IntentDomainProviderService {
+
+        InternalDomainProviderService(IntentDomainProvider provider) {
+            super(provider);
+        }
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/domain/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/domain/impl/package-info.java
new file mode 100644
index 0000000..17b9f86
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/domain/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Implementation of the intent domain subsystem.
+ */
+package org.onosproject.incubator.net.domain.impl;
\ No newline at end of file
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelApplyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelApplyCommand.java
new file mode 100644
index 0000000..c5d9e8e
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelApplyCommand.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "global-label-apply",
+      description = "Apply global labels from global resource pool")
+public class GlobalLabelApplyCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "applyNum",
+            description = "Applying number means how many labels applications want to use.",
+            required = true, multiValued = false)
+    String applyNum = null;
+
+    private static final String FMT = "deviceid=%s, labelresourceid=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Collection<LabelResource> result =
+                lrs.applyFromGlobalPool(Long.parseLong(applyNum));
+        if (!result.isEmpty()) {
+            for (Iterator<LabelResource> iterator = result.iterator(); iterator
+                    .hasNext();) {
+                DefaultLabelResource defaultLabelResource = (DefaultLabelResource) iterator
+                        .next();
+                print(FMT, defaultLabelResource.deviceId().toString(),
+                      defaultLabelResource.labelResourceId().toString());
+            }
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelCommand.java
new file mode 100644
index 0000000..d93bf6f
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelCommand.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "global-label-pool",
+      description = "Gets global label resource pool information.")
+public class GlobalLabelCommand extends AbstractShellCommand {
+    private static final String FMT = "deviceid=%s, beginLabel=%s,"
+            + "endLabel=%s, totalNum=%s, usedNum=%s, currentUsedMaxLabelId=%s,"
+            + "releaseLabelIds=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        LabelResourcePool pool = lrs.getGlobalLabelResourcePool();
+        if (pool != null) {
+            print(FMT, pool.deviceId().toString(), pool.beginLabel(),
+                  pool.endLabel(), pool.totalNum(), pool.usedNum(),
+                  pool.currentUsedMaxLabelId(), pool.releaseLabelId()
+                          .toString());
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolCreateCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolCreateCommand.java
new file mode 100644
index 0000000..605f7c2
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolCreateCommand.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+
+/**
+ * create label resource pool by specific device id.
+ */
+@Service
+@Command(scope = "onos", name = "global-label-pool-create",
+description = "Creates global label resource pool.")
+public class GlobalLabelPoolCreateCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "beginLabel",
+            description = "The first label of global label resource pool.",
+            required = true, multiValued = false)
+    String beginLabel = null;
+    @Argument(index = 1, name = "endLabel",
+            description = "The last label of global label resource pool.",
+            required = true, multiValued = false)
+    String endLabel = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.createGlobalPool(LabelResourceId.labelResourceId(Long
+                .parseLong(beginLabel)), LabelResourceId.labelResourceId(Long
+                .parseLong(endLabel)));
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolDestroyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolDestroyCommand.java
new file mode 100644
index 0000000..09c70375
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolDestroyCommand.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+
+@Service
+@Command(scope = "onos", name = "global-label-pool-destroy",
+description = "Destroys global label resource pool")
+public class GlobalLabelPoolDestroyCommand extends AbstractShellCommand {
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.destroyGlobalPool();
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelReleaseCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelReleaseCommand.java
new file mode 100644
index 0000000..3a692be
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelReleaseCommand.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "global-label-release",
+description = "Releases labels to global label resource pool.")
+public class GlobalLabelReleaseCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "releaseLabelIds",
+            description = "Represents for the label ids that are released. They are splited by dot symbol",
+            required = true, multiValued = false)
+    String releaseLabelIds = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Set<LabelResourceId> release = new HashSet<LabelResourceId>();
+        String[] labelIds = releaseLabelIds.split(",");
+        LabelResourceId resource = null;
+        for (int i = 0; i < labelIds.length; i++) {
+            resource = LabelResourceId.labelResourceId(Long.parseLong(labelIds[i]));
+            release.add(resource);
+        }
+        lrs.releaseToGlobalPool(release);
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelApplyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelApplyCommand.java
new file mode 100644
index 0000000..c7634fa
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelApplyCommand.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "label-apply",
+      description = "Apply label resource from device pool by specific device id")
+public class LabelApplyCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId",
+            description = "Device identity",
+            required = true, multiValued = false)
+    String deviceId = null;
+    @Argument(index = 1, name = "applyNum",
+            description = "Applying number means how many labels applications want to use.",
+            required = true, multiValued = false)
+    String applyNum = null;
+
+    private static final String FMT = "deviceid=%s, labelresourceid=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Collection<LabelResource> result = lrs.applyFromDevicePool(DeviceId
+                .deviceId(deviceId), Long.parseLong(applyNum));
+        if (!result.isEmpty()) {
+            for (Iterator<LabelResource> iterator = result.iterator(); iterator
+                    .hasNext();) {
+                DefaultLabelResource defaultLabelResource = (DefaultLabelResource) iterator
+                        .next();
+                print(FMT, defaultLabelResource.deviceId().toString(),
+                      defaultLabelResource.labelResourceId().toString());
+            }
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolCreateCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolCreateCommand.java
new file mode 100644
index 0000000..775c269
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolCreateCommand.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+
+/**
+ * create label resource pool by specific device id.
+ */
+@Service
+@Command(scope = "onos", name = "label-pool-create",
+     description = "Creates label resource pool by a specific device id")
+public class LabelPoolCreateCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId", description = "Device identity", required = true, multiValued = false)
+    String deviceId = null;
+    @Argument(index = 1, name = "beginLabel",
+            description = "The first label of global label resource pool.", required = true, multiValued = false)
+    String beginLabel = null;
+    @Argument(index = 2, name = "endLabel",
+            description = "The last label of global label resource pool.", required = true, multiValued = false)
+    String endLabel = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.createDevicePool(DeviceId.deviceId(deviceId), LabelResourceId
+                .labelResourceId(Long.parseLong(beginLabel)), LabelResourceId
+                .labelResourceId(Long.parseLong(endLabel)));
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolDestroyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolDestroyCommand.java
new file mode 100644
index 0000000..c875cd8
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolDestroyCommand.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+
+@Service
+@Command(scope = "onos", name = "label-pool-destroy",
+    description = "Destroys label resource pool by a specific device id")
+public class LabelPoolDestroyCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId", description = "Device identity", required = true, multiValued = false)
+    String deviceId = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.destroyDevicePool(DeviceId.deviceId(deviceId));
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelReleaseCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelReleaseCommand.java
new file mode 100644
index 0000000..c511642
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelReleaseCommand.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.Multimap;
+
+@Service
+@Command(scope = "onos", name = "label-release",
+description = "Releases label ids to label resource pool by a specific device id")
+public class LabelReleaseCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId",
+            description = "Device identity",
+            required = true, multiValued = false)
+    String deviceId = null;
+    @Argument(index = 1, name = "releaseLabelIds",
+            description = "Represents for the label ids that are released. They are splited by dot symbol",
+            required = true, multiValued = false)
+    String releaseLabelIds = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Multimap<DeviceId, LabelResource> map = ArrayListMultimap
+                .create();
+        String[] labelIds = releaseLabelIds.split(",");
+        DefaultLabelResource resource = null;
+        for (int i = 0; i < labelIds.length; i++) {
+            resource = new DefaultLabelResource(
+                                                DeviceId.deviceId(deviceId),
+                                                LabelResourceId.labelResourceId(Long
+                                                        .parseLong(labelIds[i])));
+            map.put(DeviceId.deviceId(deviceId), resource);
+        }
+        lrs.releaseToDevicePool(map);
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelResourceCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelResourceCommand.java
new file mode 100644
index 0000000..84c8f65
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelResourceCommand.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "label-pool",
+      description = "Gets label resource pool information by a specific device id")
+public class LabelResourceCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId",
+            description = "Device identity", required = true, multiValued = false)
+    String deviceId = null;
+    private static final String FMT = "deviceid=%s, beginLabel=%s,"
+            + "endLabel=%s, totalNum=%s, usedNum=%s, currentUsedMaxLabelId=%s,"
+            + "releaseLabelIds=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        LabelResourcePool pool = lrs.getDeviceLabelResourcePool(DeviceId
+                .deviceId(deviceId));
+        if (pool != null) {
+            print(FMT, pool.deviceId().toString(), pool.beginLabel(),
+                  pool.endLabel(), pool.totalNum(), pool.usedNum(),
+                  pool.currentUsedMaxLabelId(), pool.releaseLabelId()
+                          .toString());
+        } else {
+            print(FMT, deviceId, null, null, null, null, null, null);
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/package-info.java
new file mode 100644
index 0000000..0e8608f
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * CLIs for the resource label subsystem.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/LabelResourceManager.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/LabelResourceManager.java
new file mode 100644
index 0000000..ad9a133
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/LabelResourceManager.java
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.impl;
+
+import com.google.common.collect.Multimap;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+import org.onosproject.incubator.net.resource.label.LabelResourceDelegate;
+import org.onosproject.incubator.net.resource.label.LabelResourceEvent;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceListener;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceProvider;
+import org.onosproject.incubator.net.resource.label.LabelResourceProviderRegistry;
+import org.onosproject.incubator.net.resource.label.LabelResourceProviderService;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+import org.onosproject.incubator.net.resource.label.LabelResourceStore;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceEvent;
+import org.onosproject.net.device.DeviceEvent.Type;
+import org.onosproject.net.device.DeviceListener;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * provides implementation of the label resource NB &amp; SB APIs.
+ *
+ */
+@Component(immediate = true,
+           service = {LabelResourceService.class, LabelResourceAdminService.class, LabelResourceProviderRegistry.class})
+public class LabelResourceManager
+        extends AbstractListenerProviderRegistry<LabelResourceEvent, LabelResourceListener,
+                                                 LabelResourceProvider, LabelResourceProviderService>
+        implements LabelResourceService, LabelResourceAdminService, LabelResourceProviderRegistry {
+    private final Logger log = getLogger(getClass());
+    private final LabelResourceDelegate delegate = new InternalLabelResourceDelegate();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected LabelResourceStore store;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected DeviceService deviceService;
+
+    private DeviceListener deviceListener = new InternalDeviceListener();
+
+    @Activate
+    public void activate() {
+        store.setDelegate(delegate);
+        eventDispatcher.addSink(LabelResourceEvent.class, listenerRegistry);
+        deviceService.addListener(deviceListener);
+        log.info("Started");
+
+    }
+
+    @Deactivate
+    public void deactivate() {
+        deviceService.removeListener(deviceListener);
+        store.unsetDelegate(delegate);
+        eventDispatcher.removeSink(LabelResourceEvent.class);
+        log.info("Stopped");
+    }
+
+    @Override
+    public boolean createDevicePool(DeviceId deviceId,
+                                    LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        checkNotNull(deviceId, "deviceId is not null");
+        checkNotNull(beginLabel, "beginLabel is not null");
+        checkNotNull(endLabel, "endLabel is not null");
+        checkArgument(beginLabel.labelId() >= 0 || endLabel.labelId() >= 0,
+                      "The value of beginLabel and the value of endLabel must be both positive number.");
+        checkArgument(beginLabel.labelId() < endLabel.labelId(),
+                      "The value of endLabel must be greater than the value of beginLabel.");
+        return store.createDevicePool(deviceId, beginLabel, endLabel);
+    }
+
+    @Override
+    public boolean createGlobalPool(LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        checkNotNull(beginLabel, "beginLabel is not null");
+        checkNotNull(endLabel, "endLabel is not null");
+        checkArgument(beginLabel.labelId() >= 0 && endLabel.labelId() >= 0,
+                      "The value of beginLabel and the value of endLabel must be both positive number.");
+        checkArgument(beginLabel.labelId() < endLabel.labelId(),
+                      "The value of endLabel must be greater than the value of beginLabel.");
+        return store.createGlobalPool(beginLabel, endLabel);
+    }
+
+    @Override
+    public boolean destroyDevicePool(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.destroyDevicePool(deviceId);
+    }
+
+    @Override
+    public boolean destroyGlobalPool() {
+        return store.destroyGlobalPool();
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                         long applyNum) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.applyFromDevicePool(deviceId, applyNum);
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromGlobalPool(long applyNum) {
+        return store.applyFromGlobalPool(applyNum);
+    }
+
+    @Override
+    public boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release) {
+        checkNotNull(release, "release is not null");
+        return store.releaseToDevicePool(release);
+    }
+
+    @Override
+    public boolean releaseToGlobalPool(Set<LabelResourceId> release) {
+        checkNotNull(release, "release is not null");
+        return store.releaseToGlobalPool(release);
+    }
+
+    @Override
+    public boolean isDevicePoolFull(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.isDevicePoolFull(deviceId);
+    }
+
+    @Override
+    public boolean isGlobalPoolFull() {
+        return store.isGlobalPoolFull();
+    }
+
+    @Override
+    public long getFreeNumOfDevicePool(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.getFreeNumOfDevicePool(deviceId);
+    }
+
+    @Override
+    public long getFreeNumOfGlobalPool() {
+        return store.getFreeNumOfGlobalPool();
+    }
+
+    @Override
+    public LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.getDeviceLabelResourcePool(deviceId);
+    }
+
+    @Override
+    public LabelResourcePool getGlobalLabelResourcePool() {
+        return store.getGlobalLabelResourcePool();
+    }
+
+    private class InternalLabelResourceDelegate implements LabelResourceDelegate {
+        @Override
+        public void notify(LabelResourceEvent event) {
+            post(event);
+        }
+
+    }
+
+    private class InternalDeviceListener implements DeviceListener {
+        @Override
+        public void event(DeviceEvent event) {
+            Device device = event.subject();
+            if (Type.DEVICE_REMOVED.equals(event.type())) {
+                destroyDevicePool(device.id());
+            }
+        }
+    }
+
+    private class InternalLabelResourceProviderService
+            extends AbstractProviderService<LabelResourceProvider>
+            implements LabelResourceProviderService {
+
+        protected InternalLabelResourceProviderService(LabelResourceProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public void deviceLabelResourcePoolDetected(DeviceId deviceId,
+                                                    LabelResourceId beginLabel,
+                                                    LabelResourceId endLabel) {
+            checkNotNull(deviceId, "deviceId is not null");
+            checkNotNull(beginLabel, "beginLabel is not null");
+            checkNotNull(endLabel, "endLabel is not null");
+            createDevicePool(deviceId, beginLabel, endLabel);
+        }
+
+        @Override
+        public void deviceLabelResourcePoolDestroyed(DeviceId deviceId) {
+            checkNotNull(deviceId, "deviceId is not null");
+            destroyDevicePool(deviceId);
+        }
+
+    }
+
+    @Override
+    protected LabelResourceProviderService createProviderService(LabelResourceProvider provider) {
+        return new InternalLabelResourceProviderService(provider);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/package-info.java
new file mode 100644
index 0000000..6df566f
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Implementation of the label resource subsystem.
+ */
+package org.onosproject.incubator.net.resource.label.impl;
\ No newline at end of file
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/DistributedLabelResourceStore.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/DistributedLabelResourceStore.java
new file mode 100644
index 0000000..aa7133a
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/DistributedLabelResourceStore.java
@@ -0,0 +1,530 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.store.impl;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Multimap;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceDelegate;
+import org.onosproject.incubator.net.resource.label.LabelResourceEvent;
+import org.onosproject.incubator.net.resource.label.LabelResourceEvent.Type;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceRequest;
+import org.onosproject.incubator.net.resource.label.LabelResourceStore;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import static org.onlab.util.Tools.groupedThreads;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Manages label resources using copycat.
+ */
+@Component(immediate = true, service = LabelResourceStore.class)
+public class DistributedLabelResourceStore
+        extends AbstractStore<LabelResourceEvent, LabelResourceDelegate>
+        implements LabelResourceStore {
+    private final Logger log = getLogger(getClass());
+
+    private static final String POOL_MAP_NAME = "onos-label-resource-pool";
+
+    private static final String GLOBAL_RESOURCE_POOL_DEVICE_ID = "global_resource_pool_device_id";
+
+    private ConsistentMap<DeviceId, LabelResourcePool> resourcePool = null;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected StorageService storageService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected MastershipService mastershipService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterCommunicationService clusterCommunicator;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterService clusterService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected DeviceService deviceService;
+
+    private ExecutorService messageHandlingExecutor;
+    private static final int MESSAGE_HANDLER_THREAD_POOL_SIZE = 8;
+    private static final long PEER_REQUEST_TIMEOUT_MS = 5000;
+
+    private static final Serializer SERIALIZER = Serializer
+            .using(new KryoNamespace.Builder().register(KryoNamespaces.API)
+                    .register(LabelResourceEvent.class)
+                    .register(LabelResourcePool.class)
+                    .register(LabelResourceRequest.class)
+                    .register(LabelResourceRequest.Type.class)
+                    .register(LabelResourceEvent.Type.class)
+                    .register(DefaultLabelResource.class)
+                    .register(LabelResourceId.class)
+                    .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID).build());
+
+    @Activate
+    public void activate() {
+
+        resourcePool = storageService
+                .<DeviceId, LabelResourcePool>consistentMapBuilder()
+                .withName(POOL_MAP_NAME).withSerializer(SERIALIZER).build();
+        messageHandlingExecutor = Executors
+                .newFixedThreadPool(MESSAGE_HANDLER_THREAD_POOL_SIZE,
+                                    groupedThreads("onos/store/flow",
+                                                   "message-handlers",
+                                                   log));
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_CREATED,
+                        SERIALIZER::<LabelResourcePool>decode,
+                        operation -> {
+                            log.trace("received get flow entry request for {}", operation);
+                            return internalCreate(operation);
+                        },
+                        SERIALIZER::<Boolean>encode,
+                        messageHandlingExecutor);
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_DESTROYED,
+                        SERIALIZER::<DeviceId>decode,
+                        deviceId -> {
+                            log.trace("received get flow entry request for {}", deviceId);
+                            return internalDestroy(deviceId);
+                        },
+                        SERIALIZER::<Boolean>encode,
+                        messageHandlingExecutor);
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_APPLY,
+                        SERIALIZER::<LabelResourceRequest>decode,
+                        request -> {
+                            log.trace("received get flow entry request for {}", request);
+                            return internalApply(request);
+
+                        },
+                        SERIALIZER::<Collection<LabelResource>>encode,
+                        messageHandlingExecutor);
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_RELEASE,
+                        SERIALIZER::<LabelResourceRequest>decode,
+                        request -> {
+                            log.trace("received get flow entry request for {}",
+                                    request);
+                            return internalRelease(request);
+                        },
+                        SERIALIZER::<Boolean>encode,
+                        messageHandlingExecutor);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_CREATED);
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_APPLY);
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_DESTROYED);
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_RELEASE);
+        messageHandlingExecutor.shutdown();
+        log.info("Stopped");
+    }
+
+    @Override
+    public boolean createDevicePool(DeviceId deviceId,
+                                    LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        LabelResourcePool pool = new LabelResourcePool(deviceId.toString(),
+                                                       beginLabel.labelId(),
+                                                       endLabel.labelId());
+        return this.create(pool);
+    }
+
+    @Override
+    public boolean createGlobalPool(LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        LabelResourcePool pool = new LabelResourcePool(GLOBAL_RESOURCE_POOL_DEVICE_ID,
+                                                       beginLabel.labelId(),
+                                                       endLabel.labelId());
+        return this.internalCreate(pool);
+    }
+
+    private boolean create(LabelResourcePool pool) {
+        Device device = deviceService.getDevice(pool.deviceId());
+        if (device == null) {
+            return false;
+        }
+
+        NodeId master = mastershipService.getMasterFor(pool.deviceId());
+
+        if (master == null) {
+            log.warn("Failed to create label resource pool: No master for {}", pool);
+            return false;
+        }
+
+        if (master.equals(clusterService.getLocalNode().id())) {
+            return internalCreate(pool);
+        }
+
+        log.trace("Forwarding getFlowEntries to {}, which is the primary (master) for device {}",
+                  master, pool.deviceId());
+
+        return complete(clusterCommunicator
+                .sendAndReceive(pool,
+                                LabelResourceMessageSubjects.LABEL_POOL_CREATED,
+                                SERIALIZER::encode, SERIALIZER::decode,
+                                master));
+    }
+
+    private boolean internalCreate(LabelResourcePool pool) {
+        Versioned<LabelResourcePool> poolOld = resourcePool
+                .get(pool.deviceId());
+        if (poolOld == null) {
+            resourcePool.put(pool.deviceId(), pool);
+            LabelResourceEvent event = new LabelResourceEvent(Type.POOL_CREATED,
+                                                              pool);
+            notifyDelegate(event);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean destroyDevicePool(DeviceId deviceId) {
+        Device device = deviceService.getDevice(deviceId);
+        if (device == null) {
+            return false;
+        }
+
+        NodeId master = mastershipService.getMasterFor(deviceId);
+
+        if (master == null) {
+            log.warn("Failed to destroyDevicePool. No master for {}", deviceId);
+            return false;
+        }
+
+        if (master.equals(clusterService.getLocalNode().id())) {
+            return internalDestroy(deviceId);
+        }
+
+        log.trace("Forwarding request to {}, which is the primary (master) for device {}",
+                  master, deviceId);
+
+        return complete(clusterCommunicator
+                .sendAndReceive(deviceId,
+                                LabelResourceMessageSubjects.LABEL_POOL_DESTROYED,
+                                SERIALIZER::encode, SERIALIZER::decode,
+                                master));
+    }
+
+    private boolean internalDestroy(DeviceId deviceId) {
+        Versioned<LabelResourcePool> poolOld = resourcePool.get(deviceId);
+        if (poolOld != null) {
+            resourcePool.remove(deviceId);
+            LabelResourceEvent event = new LabelResourceEvent(Type.POOL_DESTROYED,
+                                                              poolOld.value());
+            notifyDelegate(event);
+        }
+        log.info("success to destroy the label resource pool of device id {}",
+                 deviceId);
+        return true;
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                         long applyNum) {
+        Device device = deviceService.getDevice(deviceId);
+        if (device == null) {
+            return Collections.emptyList();
+        }
+        LabelResourceRequest request = new LabelResourceRequest(deviceId,
+                                                                LabelResourceRequest.Type.APPLY,
+                                                                applyNum, null);
+        NodeId master = mastershipService.getMasterFor(deviceId);
+
+        if (master == null) {
+            log.warn("Failed to applyFromDevicePool: No master for {}", deviceId);
+            return Collections.emptyList();
+        }
+
+        if (master.equals(clusterService.getLocalNode().id())) {
+            return internalApply(request);
+        }
+
+        log.trace("Forwarding request to {}, which is the primary (master) for device {}",
+                  master, deviceId);
+
+        return complete(clusterCommunicator
+                .sendAndReceive(request,
+                                LabelResourceMessageSubjects.LABEL_POOL_APPLY,
+                                SERIALIZER::encode, SERIALIZER::decode,
+                                master));
+    }
+
+    private Collection<LabelResource> internalApply(LabelResourceRequest request) {
+        DeviceId deviceId = request.deviceId();
+        long applyNum = request.applyNum();
+        Versioned<LabelResourcePool> poolOld = resourcePool.get(deviceId);
+        if (poolOld == null) {
+            log.info("label resource pool not allocated for deviceId {}.", deviceId);
+            return Collections.emptyList();
+        }
+        LabelResourcePool pool = poolOld.value();
+        Collection<LabelResource> result = new HashSet<>();
+        long freeNum = this.getFreeNumOfDevicePool(deviceId);
+        if (applyNum > freeNum) {
+            log.info("the free number of the label resource pool of deviceId {} is not enough.");
+            return Collections.emptyList();
+        }
+        Set<LabelResource> releaseLabels = new HashSet<>(pool.releaseLabelId());
+        long tmp = releaseLabels.size() > applyNum ? applyNum : releaseLabels
+                .size();
+        LabelResource resource = null;
+        for (int i = 0; i < tmp; i++) {
+            Iterator<LabelResource> it = releaseLabels.iterator();
+            if (it.hasNext()) {
+                resource = it.next();
+                releaseLabels.remove(resource);
+            }
+            result.add(resource);
+        }
+        for (long j = pool.currentUsedMaxLabelId().labelId(); j < pool
+                .currentUsedMaxLabelId().labelId() + applyNum - tmp; j++) {
+            resource = new DefaultLabelResource(deviceId,
+                                                LabelResourceId
+                                                        .labelResourceId(j));
+            result.add(resource);
+        }
+        long beginLabel = pool.beginLabel().labelId();
+        long endLabel = pool.endLabel().labelId();
+        long totalNum = pool.totalNum();
+        long current = pool.currentUsedMaxLabelId().labelId() + applyNum - tmp;
+        long usedNum = pool.usedNum() + applyNum;
+        ImmutableSet<LabelResource> freeLabel = ImmutableSet
+                .copyOf(releaseLabels);
+        LabelResourcePool newPool = new LabelResourcePool(deviceId.toString(),
+                                                          beginLabel, endLabel,
+                                                          totalNum, usedNum,
+                                                          current, freeLabel);
+        resourcePool.put(deviceId, newPool);
+        log.info("success to apply label resource");
+        return result;
+    }
+
+    @Override
+    public boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release) {
+        Map<DeviceId, Collection<LabelResource>> maps = release.asMap();
+        Set<DeviceId> deviceIdSet = maps.keySet();
+        LabelResourceRequest request = null;
+        for (Iterator<DeviceId> it = deviceIdSet.iterator(); it.hasNext();) {
+            DeviceId deviceId = it.next();
+            Device device = deviceService.getDevice(deviceId);
+            if (device == null) {
+                continue;
+            }
+            ImmutableSet<LabelResource> collection = ImmutableSet.copyOf(maps
+                    .get(deviceId));
+            request = new LabelResourceRequest(deviceId,
+                                               LabelResourceRequest.Type.RELEASE,
+                                               0, collection);
+            NodeId master = mastershipService.getMasterFor(deviceId);
+
+            if (master == null) {
+                log.warn("Failed to releaseToDevicePool: No master for {}", deviceId);
+                return false;
+            }
+
+            if (master.equals(clusterService.getLocalNode().id())) {
+                return internalRelease(request);
+            }
+
+            log.trace("Forwarding request to {}, which is the primary (master) for device {}",
+                      master, deviceId);
+
+            return complete(clusterCommunicator
+                    .sendAndReceive(request,
+                                    LabelResourceMessageSubjects.LABEL_POOL_RELEASE,
+                                    SERIALIZER::encode, SERIALIZER::decode,
+                                    master));
+        }
+        return false;
+    }
+
+    private boolean internalRelease(LabelResourceRequest request) {
+        DeviceId deviceId = request.deviceId();
+        Collection<LabelResource> release = request.releaseCollection();
+        Versioned<LabelResourcePool> poolOld = resourcePool.get(deviceId);
+        if (poolOld == null) {
+            log.info("the label resource pool of device id {} not allocated");
+            return false;
+        }
+        LabelResourcePool pool = poolOld.value();
+        if (pool == null) {
+            log.info("the label resource pool of device id {} does not exist");
+            return false;
+        }
+        Set<LabelResource> storeSet = new HashSet<>(pool.releaseLabelId());
+        LabelResource labelResource = null;
+        long realReleasedNum = 0;
+        for (Iterator<LabelResource> it = release.iterator(); it.hasNext();) {
+            labelResource = it.next();
+            if (labelResource.labelResourceId().labelId() < pool.beginLabel()
+                    .labelId()
+                    || labelResource.labelResourceId().labelId() > pool
+                            .endLabel().labelId()) {
+                continue;
+            }
+            if (pool.currentUsedMaxLabelId().labelId() > labelResource
+                    .labelResourceId().labelId()
+                    || !storeSet.contains(labelResource)) {
+                storeSet.add(labelResource);
+                realReleasedNum++;
+            }
+        }
+        long beginNum = pool.beginLabel().labelId();
+        long endNum = pool.endLabel().labelId();
+        long totalNum = pool.totalNum();
+        long usedNum = pool.usedNum() - realReleasedNum;
+        long current = pool.currentUsedMaxLabelId().labelId();
+        ImmutableSet<LabelResource> s = ImmutableSet.copyOf(storeSet);
+        LabelResourcePool newPool = new LabelResourcePool(deviceId.toString(),
+                                                          beginNum, endNum,
+                                                          totalNum, usedNum,
+                                                          current, s);
+        resourcePool.put(deviceId, newPool);
+        log.info("success to release label resource");
+        return true;
+    }
+
+    @Override
+    public boolean isDevicePoolFull(DeviceId deviceId) {
+        Versioned<LabelResourcePool> pool = resourcePool.get(deviceId);
+        if (pool == null) {
+            return true;
+        }
+        return pool.value().currentUsedMaxLabelId() == pool.value().endLabel()
+                && pool.value().releaseLabelId().size() == 0 ? true : false;
+    }
+
+    @Override
+    public long getFreeNumOfDevicePool(DeviceId deviceId) {
+        Versioned<LabelResourcePool> pool = resourcePool.get(deviceId);
+        if (pool == null) {
+            return 0;
+        }
+        return pool.value().endLabel().labelId()
+                - pool.value().currentUsedMaxLabelId().labelId()
+                + pool.value().releaseLabelId().size();
+    }
+
+    @Override
+    public LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId) {
+        Versioned<LabelResourcePool> pool = resourcePool.get(deviceId);
+        return pool == null ? null : pool.value();
+    }
+
+    @Override
+    public boolean destroyGlobalPool() {
+        return this.internalDestroy(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromGlobalPool(long applyNum) {
+        LabelResourceRequest request = new LabelResourceRequest(DeviceId.deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID),
+                                                                LabelResourceRequest.Type.APPLY,
+                                                                applyNum, null);
+        return this.internalApply(request);
+    }
+
+    @Override
+    public boolean releaseToGlobalPool(Set<LabelResourceId> release) {
+        Set<LabelResource> set = new HashSet<>();
+        DefaultLabelResource resource = null;
+        for (LabelResourceId labelResource : release) {
+            resource = new DefaultLabelResource(DeviceId.deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID),
+                                                labelResource);
+            set.add(resource);
+        }
+        LabelResourceRequest request = new LabelResourceRequest(DeviceId.deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID),
+                                                                LabelResourceRequest.Type.RELEASE,
+                                                                0,
+                                                                ImmutableSet.copyOf(set));
+        return this.internalRelease(request);
+    }
+
+    @Override
+    public boolean isGlobalPoolFull() {
+        return this.isDevicePoolFull(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    @Override
+    public long getFreeNumOfGlobalPool() {
+        return this.getFreeNumOfDevicePool(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    @Override
+    public LabelResourcePool getGlobalLabelResourcePool() {
+        return this.getDeviceLabelResourcePool(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    private <T> T complete(Future<T> future) {
+        try {
+            return future.get(PEER_REQUEST_TIMEOUT_MS, TimeUnit.MILLISECONDS);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            log.error("Interrupted while waiting for operation to complete.", e);
+            return null;
+        } catch (TimeoutException | ExecutionException e) {
+            log.error("Failed remote operation", e);
+            return null;
+        }
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/LabelResourceMessageSubjects.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/LabelResourceMessageSubjects.java
new file mode 100644
index 0000000..cd89233
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/LabelResourceMessageSubjects.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.store.impl;
+
+import org.onosproject.store.cluster.messaging.MessageSubject;
+
+public final class LabelResourceMessageSubjects {
+
+    private LabelResourceMessageSubjects() {
+    }
+    public static final MessageSubject LABEL_POOL_CREATED
+                        = new MessageSubject("label-resource-pool-created");
+    public static final MessageSubject LABEL_POOL_DESTROYED
+                        = new MessageSubject("label-resource-pool-destroyed");
+    public static final MessageSubject LABEL_POOL_APPLY
+                        = new MessageSubject("label-resource-pool-apply");
+    public static final MessageSubject LABEL_POOL_RELEASE
+                        = new MessageSubject("label-resource-pool-release");
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/package-info.java
new file mode 100644
index 0000000..b97e9bc
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Implementation of the label resource distributed store.
+ */
+package org.onosproject.incubator.net.resource.label.store.impl;
\ No newline at end of file
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/AddTunnelCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/AddTunnelCommand.java
new file mode 100644
index 0000000..86eb5f4
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/AddTunnelCommand.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.domain.IntentDomainId;
+import org.onosproject.incubator.net.domain.IntentDomainService;
+import org.onosproject.incubator.net.domain.TunnelPrimitive;
+import org.onosproject.net.ConnectPoint;
+
+import java.util.NoSuchElementException;
+
+/**
+ * Installs intent domain tunnel primitive.
+ */
+@Service
+@Command(scope = "onos", name = "add-domain-tunnel",
+         description = "Installs intent domain tunnel primitive")
+public class AddTunnelCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "one",
+              description = "Port one",
+              required = true, multiValued = false)
+    String oneString = null;
+
+    @Argument(index = 1, name = "two",
+              description = "Port two",
+              required = true, multiValued = false)
+    String twoString = null;
+
+    @Override
+    protected void doExecute() {
+        IntentDomainService service = get(IntentDomainService.class);
+
+        ConnectPoint one = ConnectPoint.deviceConnectPoint(oneString);
+        ConnectPoint two = ConnectPoint.deviceConnectPoint(twoString);
+
+        TunnelPrimitive tunnel = new TunnelPrimitive(appId(), one, two);
+
+        // get the first domain (there should only be one)
+        final IntentDomainId domainId;
+        try {
+            domainId = service.getDomains().iterator().next().id();
+        } catch (NoSuchElementException | NullPointerException e) {
+            print("No domains found");
+            return;
+        }
+
+        service.request(domainId, tunnel).forEach(r -> service.submit(domainId, r));
+
+        print("Intent domain tunnel submitted:\n%s", tunnel);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelBorrowCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelBorrowCommand.java
new file mode 100644
index 0000000..4934c11
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelBorrowCommand.java
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Optional;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.DefaultApplicationId;
+import org.onosproject.incubator.net.tunnel.DefaultOpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.OpticalLogicId;
+import org.onosproject.incubator.net.tunnel.OpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelName;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Borrows tunnels. It's used by consumers.
+ */
+@Service
+@Command(scope = "onos", name = "tunnel-borrow", description = "Borrows tunnels. It's used by consumers.")
+public class TunnelBorrowCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "consumerId",
+            description = "consumer id means application id.", required = true, multiValued = false)
+    String consumerId = null;
+
+    @Option(name = "-s", aliases = "--src", description = "Source tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise src means IP address.", required = false, multiValued = false)
+    String src = null;
+
+    @Option(name = "-d", aliases = "--dst", description = "Destination tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise dst means IP address.", required = false, multiValued = false)
+    String dst = null;
+
+    @Option(name = "-t", aliases = "--type", description = "The type of tunnels,"
+            + " It includes MPLS, VLAN, VXLAN, GRE, ODUK, OCH", required = false, multiValued = false)
+    String type = null;
+
+    @Option(name = "-i", aliases = "--tunnelId",
+            description = "the tunnel identity.", required = false, multiValued = false)
+    String tunnelId = null;
+
+    @Option(name = "-n", aliases = "--tunnelName",
+            description = "The name of tunnels", required = false, multiValued = false)
+    String tunnelName = null;
+    private static final String FMT = "src=%s, dst=%s,"
+            + "type=%s, state=%s, producerName=%s, tunnelName=%s,"
+            + "groupId=%s";
+
+    @Override
+    protected void doExecute() {
+        Collection<Tunnel> tunnelSet = null;
+        Tunnel.Type trueType = null;
+        TunnelService service = get(TunnelService.class);
+        ApplicationId appId = new DefaultApplicationId(1, consumerId);
+        ProviderId producerName = new ProviderId("default",
+                                                 "org.onosproject.provider.tunnel.default");
+        if (!isNull(src) && !isNull(dst) && !isNull(type)) {
+            TunnelEndPoint srcPoint = null;
+            TunnelEndPoint dstPoint = null;
+            if ("MPLS".equals(type)) {
+                trueType = Tunnel.Type.MPLS;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VXLAN".equals(type)) {
+                trueType = Tunnel.Type.VXLAN;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("GRE".equals(type)) {
+                trueType = Tunnel.Type.GRE;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VLAN".equals(type)) {
+                trueType = Tunnel.Type.VLAN;
+                String[] srcArray = src.split("-");
+                String[] dstArray = dst.split("-");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            null,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            null,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("ODUK".equals(type)) {
+                trueType = Tunnel.Type.ODUK;
+                String[] srcArray = src.split("-");
+                String[] dstArray = dst.split("-");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("OCH".equals(type)) {
+                trueType = Tunnel.Type.OCH;
+                String[] srcArray = src.split("-");
+                String[] dstArray = dst.split("-");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else {
+                print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+                return;
+            }
+            tunnelSet = service.borrowTunnel(appId, srcPoint, dstPoint, trueType);
+        }
+        if (!isNull(tunnelId)) {
+            TunnelId id = TunnelId.valueOf(tunnelId);
+            Tunnel tunnel = service.borrowTunnel(appId, id);
+            tunnelSet = new HashSet<Tunnel>();
+            tunnelSet.add(tunnel);
+        }
+        if (!isNull(tunnelName)) {
+            TunnelName name = TunnelName.tunnelName(tunnelName);
+            tunnelSet = service.borrowTunnel(appId, name);
+        }
+        for (Tunnel tunnel : tunnelSet) {
+            print(FMT, tunnel.src(), tunnel.dst(), tunnel.type(),
+                  tunnel.state(), tunnel.providerId(), tunnel.tunnelName(),
+                  tunnel.groupId());
+        }
+    }
+
+    private boolean isNull(String s) {
+        return s == null || "".equals(s);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelCreateCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelCreateCommand.java
new file mode 100644
index 0000000..259998a
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelCreateCommand.java
@@ -0,0 +1,207 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import java.util.Optional;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.core.GroupId;
+import org.onosproject.incubator.net.tunnel.DefaultOpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.DefaultTunnelDescription;
+import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.OpticalLogicId;
+import org.onosproject.incubator.net.tunnel.OpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelName;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Supports for creating a tunnel by using IP address and optical as tunnel end
+ * point.
+ */
+@Service
+@Command(scope = "onos", name = "tunnel-create",
+description = "Supports for creating a tunnel by using IP address and optical as tunnel end point now.")
+public class TunnelCreateCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "src", description = "Source tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If creates a ODUK or OCH or VLAN type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise src means IP address.", required = true, multiValued = false)
+    String src = null;
+
+    @Argument(index = 1, name = "dst", description = "Destination tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If creates a ODUK or OCH or VLAN type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise dst means IP address.", required = true, multiValued = false)
+    String dst = null;
+    @Argument(index = 2, name = "type", description = "The type of tunnels,"
+            + " It includes MPLS, VLAN, VXLAN, GRE, ODUK, OCH", required = true, multiValued = false)
+    String type = null;
+    @Option(name = "-g", aliases = "--groupId",
+            description = "Group flow table id which a tunnel match up", required = false, multiValued = false)
+    String groupId = "0";
+
+    @Option(name = "-n", aliases = "--tunnelName",
+            description = "The name of tunnels", required = false, multiValued = false)
+    String tunnelName = "onos";
+
+    @Option(name = "-b", aliases = "--bandwidth",
+            description = "The bandwidth attribute of tunnel", required = false, multiValued = false)
+    String bandwidth = "1024";
+
+    private static final String FMT = "The tunnel identity is %s";
+
+    @Override
+    protected void doExecute() {
+        TunnelProvider service = get(TunnelProvider.class);
+        ProviderId producerName = new ProviderId("default",
+                                                 "org.onosproject.provider.tunnel.default");
+        TunnelEndPoint srcPoint = null;
+        TunnelEndPoint dstPoint = null;
+        Tunnel.Type trueType = null;
+        if ("MPLS".equals(type)) {
+            trueType = Tunnel.Type.MPLS;
+            srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(src));
+            dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(dst));
+        } else if ("VLAN".equals(type)) {
+            trueType = Tunnel.Type.VLAN;
+            String[] srcArray = src.split("/");
+            String[] dstArray = dst.split("/");
+            srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                        producerName,
+                                                        Optional.of(DeviceId
+                                                                .deviceId(srcArray[0])),
+                                                        Optional.of(PortNumber
+                                                                .portNumber(srcArray[1])),
+                                                        null,
+                                                        null,
+                                                        OpticalLogicId
+                                                                .logicId(0),
+                                                        true);
+            dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                        producerName,
+                                                        Optional.of(DeviceId
+                                                                .deviceId(dstArray[0])),
+                                                        Optional.of(PortNumber
+                                                                .portNumber(dstArray[1])),
+                                                        null,
+                                                        null,
+                                                        OpticalLogicId
+                                                                .logicId(0),
+                                                        true);
+        } else if ("VXLAN".equals(type)) {
+            trueType = Tunnel.Type.VXLAN;
+            srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(src));
+            dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(dst));
+        } else if ("GRE".equals(type)) {
+            trueType = Tunnel.Type.GRE;
+            srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(src));
+            dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(dst));
+        } else if ("ODUK".equals(type)) {
+            trueType = Tunnel.Type.ODUK;
+            String[] srcArray = src.split("/");
+            String[] dstArray = dst.split("/");
+            srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                        producerName,
+                                                        Optional.of(DeviceId
+                                                                .deviceId(srcArray[0])),
+                                                        Optional.of(PortNumber
+                                                                .portNumber(srcArray[1])),
+                                                        null,
+                                                        OpticalTunnelEndPoint.Type.LAMBDA,
+                                                        OpticalLogicId
+                                                                .logicId(0),
+                                                        true);
+            dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                        producerName,
+                                                        Optional.of(DeviceId
+                                                                .deviceId(dstArray[0])),
+                                                        Optional.of(PortNumber
+                                                                .portNumber(dstArray[1])),
+                                                        null,
+                                                        OpticalTunnelEndPoint.Type.LAMBDA,
+                                                        OpticalLogicId
+                                                                .logicId(0),
+                                                        true);
+        } else if ("OCH".equals(type)) {
+            trueType = Tunnel.Type.OCH;
+            String[] srcArray = src.split("/");
+            String[] dstArray = dst.split("/");
+            srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                        producerName,
+                                                        Optional.of(DeviceId
+                                                                .deviceId(srcArray[0])),
+                                                        Optional.of(PortNumber
+                                                                .portNumber(srcArray[1])),
+                                                        null,
+                                                        OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                        OpticalLogicId
+                                                                .logicId(0),
+                                                        true);
+            dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                        producerName,
+                                                        Optional.of(DeviceId
+                                                                .deviceId(dstArray[0])),
+                                                        Optional.of(PortNumber
+                                                                .portNumber(dstArray[1])),
+                                                        null,
+                                                        OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                        OpticalLogicId
+                                                                .logicId(0),
+                                                        true);
+        } else {
+            print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+            return;
+        }
+
+        SparseAnnotations annotations = DefaultAnnotations
+                .builder()
+                .set("bandwidth", bandwidth == null || "".equals(bandwidth) ? "0" : bandwidth)
+                .build();
+        TunnelDescription tunnel = new DefaultTunnelDescription(
+                                                                null,
+                                                                srcPoint,
+                                                                dstPoint,
+                                                                trueType,
+                                                                new GroupId(Integer.parseInt(groupId)),
+                                                                producerName,
+                                                                TunnelName
+                                                                        .tunnelName(tunnelName),
+                                                                        null,
+                                                                annotations);
+        TunnelId tunnelId = service.tunnelAdded(tunnel);
+        if (tunnelId == null) {
+            error("Create tunnel failed.");
+            return;
+        }
+        print(FMT, tunnelId.id());
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelQueryCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelQueryCommand.java
new file mode 100644
index 0000000..166929b
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelQueryCommand.java
@@ -0,0 +1,226 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Optional;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.tunnel.DefaultOpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.OpticalLogicId;
+import org.onosproject.incubator.net.tunnel.OpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Link;
+import org.onosproject.net.Path;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Supports for querying tunnels. It's used by consumers.
+ */
+@Service
+@Command(scope = "onos", name = "tunnels", description = "Supports for querying tunnels."
+        + " It's used by consumers.")
+public class TunnelQueryCommand extends AbstractShellCommand {
+    @Option(name = "-s", aliases = "--src", description = "Source tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise src means IP address.", required = false, multiValued = false)
+    String src = null;
+    @Option(name = "-d", aliases = "--dst", description = "Destination tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise dst means IP address.", required = false, multiValued = false)
+    String dst = null;
+
+    @Option(name = "-t", aliases = "--type", description = "The type of tunnels,"
+            + " It includes MPLS, VLAN, VXLAN, GRE, ODUK, OCH", required = false, multiValued = false)
+    String type = null;
+
+    @Option(name = "-i", aliases = "--tunnelId",
+            description = "the tunnel identity.", required = false, multiValued = false)
+    String tunnelId = null;
+
+    private static final String FMT = "tunnelId=%s, src=%s, dst=%s,"
+            + "type=%s, state=%s, producerName=%s, tunnelName=%s,"
+            + "groupId=%s, path=%s%s";
+
+    @Override
+    protected void doExecute() {
+        Tunnel.Type trueType = null;
+        TunnelService service = get(TunnelService.class);
+        ProviderId producerName = new ProviderId("default",
+                                                 "org.onosproject.provider.tunnel.default");
+        Collection<Tunnel> tunnelSet = null;
+        if (isNull(src) && isNull(dst) && isNull(type) && isNull(tunnelId)) {
+            tunnelSet = service.queryAllTunnels();
+        }
+
+        if (!isNull(src) && !isNull(dst) && !isNull(type)) {
+            TunnelEndPoint srcPoint = null;
+            TunnelEndPoint dstPoint = null;
+            if ("MPLS".equals(type) || "VXLAN".equals(type)
+                    || "GRE".equals(type)) {
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VLAN".equals(type)) {
+                String[] srcArray = src.split("/");
+                String[] dstArray = dst.split("/");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            null,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            null,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("ODUK".equals(type)) {
+                String[] srcArray = src.split("/");
+                String[] dstArray = dst.split("/");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("OCH".equals(type)) {
+                String[] srcArray = src.split("/");
+                String[] dstArray = dst.split("/");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else {
+                print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+                return;
+            }
+            tunnelSet = service.queryTunnel(srcPoint, dstPoint);
+        }
+        if (!isNull(type)) {
+            if ("MPLS".equals(type)) {
+                trueType = Tunnel.Type.MPLS;
+            } else if ("VLAN".equals(type)) {
+                trueType = Tunnel.Type.VLAN;
+            } else if ("VXLAN".equals(type)) {
+                trueType = Tunnel.Type.VXLAN;
+            } else if ("GRE".equals(type)) {
+                trueType = Tunnel.Type.GRE;
+            } else if ("ODUK".equals(type)) {
+                trueType = Tunnel.Type.ODUK;
+            } else if ("OCH".equals(type)) {
+                trueType = Tunnel.Type.OCH;
+            } else {
+                print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+                return;
+            }
+            tunnelSet = service.queryTunnel(trueType);
+        }
+        if (!isNull(tunnelId)) {
+            TunnelId id = TunnelId.valueOf(tunnelId);
+            Tunnel tunnel = service.queryTunnel(id);
+            tunnelSet = new HashSet<Tunnel>();
+            tunnelSet.add(tunnel);
+        }
+        if (tunnelSet != null) {
+            for (Tunnel tunnel : tunnelSet) {
+                print(FMT, tunnel.tunnelId().id(), tunnel.src().toString(), tunnel.dst().toString(),
+                      tunnel.type(), tunnel.state(), tunnel.providerId(),
+                      tunnel.tunnelName(), tunnel.groupId(),
+                      showPath(tunnel.path()),
+                      annotations(tunnel.annotations()));
+            }
+        }
+    }
+
+    private String showPath(Path path) {
+        if (path == null) {
+            return "null";
+        }
+        StringBuilder builder = new StringBuilder("(");
+        for (Link link : path.links()) {
+            builder.append("(DeviceId:" + link.src().deviceId() + " Port:"
+                    + link.src().port().toString());
+            builder.append(" DeviceId:" + link.dst().deviceId() + " Port:"
+                    + link.dst().port().toString() + ")");
+        }
+        builder.append(annotations(path.annotations()) + ")");
+        return builder.toString();
+    }
+
+    private boolean isNull(String s) {
+        return s == null || "".equals(s);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelQuerySubscriptionCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelQuerySubscriptionCommand.java
new file mode 100644
index 0000000..bc6df51
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelQuerySubscriptionCommand.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import java.util.Collection;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.DefaultApplicationId;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.incubator.net.tunnel.TunnelSubscription;
+
+/**
+ * Query all tunnel subscriptions of consumer by consumer id.
+ * It's used by consumers.
+ */
+@Service
+@Command(scope = "onos", name = "tunnel-subscriptions",
+      description = "Query all request orders of consumer by consumer id. It's used by consumers.")
+public class TunnelQuerySubscriptionCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "consumerId",
+            description = "consumer id means provider id",
+            required = true, multiValued = false)
+    String consumerId = null;
+    private static final String FMT = "appId=%s, src=%s, dst=%s,"
+            + "type=%s, tunnelId=%s";
+
+    @Override
+    protected void doExecute() {
+        TunnelService service = get(TunnelService.class);
+        ApplicationId applicationId = new DefaultApplicationId(1, consumerId);
+        Collection<TunnelSubscription> tunnelSet = service.queryTunnelSubscription(applicationId);
+        for (TunnelSubscription order : tunnelSet) {
+            print(FMT, order.consumerId(), order.src(), order.dst(),
+                  order.type(), order.tunnelId());
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelRemoveCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelRemoveCommand.java
new file mode 100644
index 0000000..446d526
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelRemoveCommand.java
@@ -0,0 +1,205 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import java.util.Collection;
+import java.util.Optional;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.tunnel.DefaultOpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.DefaultTunnelDescription;
+import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.OpticalLogicId;
+import org.onosproject.incubator.net.tunnel.OpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Supports for removing tunnels. It's used by producers.
+ */
+@Service
+@Command(scope = "onos", name = "tunnel-remove", description = "Supports for removing tunnels. It's used by producers.")
+public class TunnelRemoveCommand extends AbstractShellCommand {
+    @Option(name = "-s", aliases = "--src", description = "Source tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise src means IP address.", required = false, multiValued = false)
+    String src = null;
+    @Option(name = "-d", aliases = "--dst", description = "Destination tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise dst means IP address.", required = false, multiValued = false)
+    String dst = null;
+
+    @Option(name = "-t", aliases = "--type", description = "The type of tunnels,"
+            + " It includes MPLS, VLAN, VXLAN, GRE, ODUK, OCH", required = false, multiValued = false)
+    String type = null;
+
+    @Option(name = "-i", aliases = "--tunnelId",
+            description = "the tunnel identity.", required = false, multiValued = false)
+    String tunnelId = null;
+
+    @Override
+    protected void doExecute() {
+        TunnelDescription tunnel = null;
+        TunnelProvider service = get(TunnelProvider.class);
+        ProviderId producerName = new ProviderId("default",
+                                                 "org.onosproject.provider.tunnel.default");
+        if (!isNull(src) && !isNull(dst) && !isNull(type)) {
+            TunnelEndPoint srcPoint = null;
+            TunnelEndPoint dstPoint = null;
+            Tunnel.Type trueType = null;
+            if ("MPLS".equals(type)) {
+                trueType = Tunnel.Type.MPLS;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VLAN".equals(type)) {
+                trueType = Tunnel.Type.VLAN;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VXLAN".equals(type)) {
+                trueType = Tunnel.Type.VXLAN;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("GRE".equals(type)) {
+                trueType = Tunnel.Type.GRE;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("ODUK".equals(type)) {
+                trueType = Tunnel.Type.ODUK;
+                String[] srcArray = src.split("/");
+                String[] dstArray = dst.split("/");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("OCH".equals(type)) {
+                trueType = Tunnel.Type.OCH;
+                String[] srcArray = src.split("/");
+                String[] dstArray = dst.split("/");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else {
+                print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+                return;
+            }
+
+            tunnel = new DefaultTunnelDescription(null, srcPoint, dstPoint,
+                                                  trueType, null, producerName,
+                                                  null, null);
+            service.tunnelRemoved(tunnel);
+            return;
+        }
+        if (!isNull(tunnelId)) {
+            TunnelId id = TunnelId.valueOf(tunnelId);
+            tunnel = new DefaultTunnelDescription(id, null, null, null, null,
+                                                  producerName, null, null);
+            service.tunnelRemoved(tunnel);
+            return;
+        }
+
+        if (!isNull(type)) {
+            Tunnel.Type trueType = null;
+            Collection<Tunnel> tunnelSet = null;
+            TunnelService tunnelService = get(TunnelService.class);
+            if ("MPLS".equals(type)) {
+                trueType = Tunnel.Type.MPLS;
+            } else if ("VLAN".equals(type)) {
+                trueType = Tunnel.Type.VLAN;
+            } else if ("VXLAN".equals(type)) {
+                trueType = Tunnel.Type.VXLAN;
+            } else if ("GRE".equals(type)) {
+                trueType = Tunnel.Type.GRE;
+            } else if ("ODUK".equals(type)) {
+                trueType = Tunnel.Type.ODUK;
+            } else if ("OCH".equals(type)) {
+                trueType = Tunnel.Type.OCH;
+            } else {
+                print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+                return;
+            }
+            tunnelSet = tunnelService.queryTunnel(trueType);
+            if (tunnelSet != null) {
+                for (Tunnel tunnelTemp : tunnelSet) {
+                    tunnel = new DefaultTunnelDescription(tunnelTemp.tunnelId(), null, null, null, null,
+                                                          producerName, null, null);
+                    service.tunnelRemoved(tunnel);
+                }
+            }
+        }
+    }
+
+    private boolean isNull(String s) {
+        return s == null || "".equals(s);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelReturnCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelReturnCommand.java
new file mode 100644
index 0000000..ce0f5c3
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelReturnCommand.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import java.util.Optional;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.DefaultApplicationId;
+import org.onosproject.incubator.net.tunnel.DefaultOpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.OpticalLogicId;
+import org.onosproject.incubator.net.tunnel.OpticalTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelName;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Returns tunnels. It's used by consumers.
+ */
+@Service
+@Command(scope = "onos", name = "tunnel-return",
+description = "Returns tunnels. It's used by consumers.")
+public class TunnelReturnCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "consumerId",
+            description = "consumer id means application id.", required = true, multiValued = false)
+    String consumerId = null;
+
+    @Option(name = "-s", aliases = "--src", description = "Source tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise src means IP address.", required = false, multiValued = false)
+    String src = null;
+
+    @Option(name = "-d", aliases = "--dst", description = "Destination tunnel point."
+            + " Only supports for IpTunnelEndPoint and OpticalTunnelEndPoint as end point now."
+            + " If deletess a ODUK or OCH type tunnel, the formatter of this argument is DeviceId-PortNumber."
+            + " Otherwise dst means IP address.", required = false, multiValued = false)
+    String dst = null;
+
+    @Option(name = "-t", aliases = "--type", description = "The type of tunnels,"
+            + " It includes MPLS, VLAN, VXLAN, GRE, ODUK, OCH", required = false, multiValued = false)
+    String type = null;
+
+    @Option(name = "-i", aliases = "--tunnelId",
+            description = "the tunnel identity.", required = false, multiValued = false)
+    String tunnelId = null;
+
+    @Option(name = "-n", aliases = "--tunnelName",
+            description = "The name of tunnels", required = false, multiValued = false)
+    String tunnelName = null;
+
+    @Override
+    protected void doExecute() {
+        Tunnel.Type trueType = null;
+        TunnelService service = get(TunnelService.class);
+        ApplicationId appId = new DefaultApplicationId(1, consumerId);
+        ProviderId producerName = new ProviderId("default",
+                                                 "org.onosproject.provider.tunnel.default");
+        if (!isNull(src) && !isNull(dst) && !isNull(type)) {
+            TunnelEndPoint srcPoint = null;
+            TunnelEndPoint dstPoint = null;
+            if ("MPLS".equals(type)) {
+                trueType = Tunnel.Type.MPLS;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VXLAN".equals(type)) {
+                trueType = Tunnel.Type.VXLAN;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("GRE".equals(type)) {
+                trueType = Tunnel.Type.GRE;
+                srcPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(src));
+                dstPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                        .valueOf(dst));
+            } else if ("VLAN".equals(type)) {
+                trueType = Tunnel.Type.VLAN;
+                String[] srcArray = src.split("-");
+                String[] dstArray = dst.split("-");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            null,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            null,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("ODUK".equals(type)) {
+                trueType = Tunnel.Type.ODUK;
+                String[] srcArray = src.split("-");
+                String[] dstArray = dst.split("-");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.LAMBDA,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else if ("OCH".equals(type)) {
+                trueType = Tunnel.Type.OCH;
+                String[] srcArray = src.split("-");
+                String[] dstArray = dst.split("-");
+                srcPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(srcArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(srcArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+                dstPoint = new DefaultOpticalTunnelEndPoint(
+                                                            producerName,
+                                                            Optional.of(DeviceId
+                                                                    .deviceId(dstArray[0])),
+                                                            Optional.of(PortNumber
+                                                                    .portNumber(dstArray[1])),
+                                                            null,
+                                                            OpticalTunnelEndPoint.Type.TIMESLOT,
+                                                            OpticalLogicId
+                                                                    .logicId(0),
+                                                            true);
+            } else {
+                print("Illegal tunnel type. Please input MPLS, VLAN, VXLAN, GRE, ODUK or OCH.");
+                return;
+            }
+            service.returnTunnel(appId, srcPoint, dstPoint, trueType);
+        }
+        if (!isNull(tunnelId)) {
+            TunnelId id = TunnelId.valueOf(tunnelId);
+            service.returnTunnel(appId, id);
+        }
+        if (!isNull(tunnelName)) {
+            TunnelName name = TunnelName.tunnelName(tunnelName);
+            service.returnTunnel(appId, name);
+        }
+    }
+    private boolean isNull(String s) {
+        return s == null || "".equals(s);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelUpdateCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelUpdateCommand.java
new file mode 100644
index 0000000..601281a
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/TunnelUpdateCommand.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.tunnel.DefaultTunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.SparseAnnotations;
+
+/**
+ * Supports for updating a tunnel by tunnel identity.
+ * It's used by producers.
+ */
+@Service
+@Command(scope = "onos", name = "tunnel-update",
+description = "Supports for updating a tunnel by tunnel identity."
+        + " It's used by producers.")
+public class TunnelUpdateCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "tunnelId", description = "the tunnel identity.",
+            required = true, multiValued = false)
+    String tunnelId = null;
+
+    @Option(name = "-b", aliases = "--bandwidth",
+            description = "The bandwidth attribute of tunnel", required = false, multiValued = false)
+    String bandwidth = null;
+
+    @Override
+    protected void doExecute() {
+        TunnelProvider service = get(TunnelProvider.class);
+        TunnelId id = TunnelId.valueOf(tunnelId);
+        SparseAnnotations annotations = DefaultAnnotations
+                .builder()
+                .set("bandwidth", bandwidth)
+                .build();
+        TunnelDescription tunnel = new DefaultTunnelDescription(id, null,
+                                                                null,
+                                                                null, null,
+                                                                null,
+                                                                null, null, annotations);
+        service.tunnelUpdated(tunnel);
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/package-info.java
new file mode 100644
index 0000000..8980c62
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/cli/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * CLIs for the tunnel subsystem.
+ */
+package org.onosproject.incubator.net.tunnel.cli;
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/impl/TunnelManager.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/impl/TunnelManager.java
new file mode 100644
index 0000000..623d005
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/impl/TunnelManager.java
@@ -0,0 +1,446 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.impl;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.incubator.net.tunnel.DefaultTunnel;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.Tunnel.State;
+import org.onosproject.incubator.net.tunnel.Tunnel.Type;
+import org.onosproject.incubator.net.tunnel.TunnelAdminService;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelEvent;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelListener;
+import org.onosproject.incubator.net.tunnel.TunnelName;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.incubator.net.tunnel.TunnelProviderRegistry;
+import org.onosproject.incubator.net.tunnel.TunnelProviderService;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.incubator.net.tunnel.TunnelStore;
+import org.onosproject.incubator.net.tunnel.TunnelStoreDelegate;
+import org.onosproject.incubator.net.tunnel.TunnelSubscription;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.onosproject.net.provider.ProviderId;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Provides implementation of the tunnel NB/SB APIs.
+ */
+@Component(immediate = true, service = {TunnelService.class, TunnelAdminService.class, TunnelProviderRegistry.class})
+public class TunnelManager
+        extends AbstractListenerProviderRegistry<TunnelEvent, TunnelListener,
+                                                 TunnelProvider, TunnelProviderService>
+        implements TunnelService, TunnelAdminService, TunnelProviderRegistry {
+
+    private static final String TUNNNEL_ID_NULL = "Tunnel ID cannot be null";
+    private static final String TUNNNEL_NULL = "Tunnel cannot be null";
+
+    private final Logger log = getLogger(getClass());
+
+    private final TunnelStoreDelegate delegate = new InternalStoreDelegate();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected TunnelStore store;
+
+
+    @Activate
+    public void activate() {
+        store.setDelegate(delegate);
+        eventDispatcher.addSink(TunnelEvent.class, listenerRegistry);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        store.unsetDelegate(delegate);
+        eventDispatcher.removeSink(TunnelEvent.class);
+        log.info("Stopped");
+    }
+
+    @Override
+    public void removeTunnel(TunnelId tunnelId) {
+        checkNotNull(tunnelId, TUNNNEL_ID_NULL);
+        Tunnel tunnel = store.queryTunnel(tunnelId);
+        if (tunnel != null) {
+            store.deleteTunnel(tunnelId);
+            if (tunnel.providerId() != null) {
+                TunnelProvider provider = getProvider(tunnel.providerId());
+                if (provider != null) {
+                    provider.releaseTunnel(tunnel);
+                }
+            } else {
+                Set<ProviderId> ids = getProviders();
+                for (ProviderId providerId : ids) {
+                    TunnelProvider provider = getProvider(providerId);
+                    provider.releaseTunnel(tunnel);
+                }
+            }
+        }
+    }
+
+    @Override
+    public void updateTunnel(Tunnel tunnel, Path path) {
+        store.createOrUpdateTunnel(tunnel);
+        if (tunnel.providerId() != null) {
+            TunnelProvider provider = getProvider(tunnel.providerId());
+            if (provider != null) {
+                provider.updateTunnel(tunnel, path);
+            }
+        } else {
+            Set<ProviderId> ids = getProviders();
+            for (ProviderId providerId : ids) {
+                TunnelProvider provider = getProvider(providerId);
+                provider.updateTunnel(tunnel, path);
+            }
+        }
+    }
+
+    @Override
+    public void updateTunnelState(Tunnel tunnel, State state) {
+        Tunnel storedTunnel = store.queryTunnel(tunnel.tunnelId());
+        store.createOrUpdateTunnel(storedTunnel, state);
+    }
+
+    @Override
+    public void removeTunnels(TunnelEndPoint src, TunnelEndPoint dst,
+                              ProviderId producerName) {
+        Collection<Tunnel> setTunnels = store.queryTunnel(src, dst);
+        if (!setTunnels.isEmpty()) {
+            store.deleteTunnel(src, dst, producerName);
+            for (Tunnel tunnel : setTunnels) {
+                if (producerName != null
+                        && !tunnel.providerId().equals(producerName)) {
+                    continue;
+                }
+                if (tunnel.providerId() != null) {
+                    TunnelProvider provider = getProvider(tunnel.providerId());
+                    if (provider != null) {
+                        provider.releaseTunnel(tunnel);
+                    }
+                } else {
+                    Set<ProviderId> ids = getProviders();
+                    for (ProviderId providerId : ids) {
+                        TunnelProvider provider = getProvider(providerId);
+                        provider.releaseTunnel(tunnel);
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    public void removeTunnels(TunnelEndPoint src, TunnelEndPoint dst, Type type,
+                              ProviderId producerName) {
+        Collection<Tunnel> setTunnels = store.queryTunnel(src, dst);
+        if (!setTunnels.isEmpty()) {
+            store.deleteTunnel(src, dst, type, producerName);
+            for (Tunnel tunnel : setTunnels) {
+                if (producerName != null
+                        && !tunnel.providerId().equals(producerName)
+                        || !type.equals(tunnel.type())) {
+                    continue;
+                }
+                if (tunnel.providerId() != null) {
+                    TunnelProvider provider = getProvider(tunnel.providerId());
+                    if (provider != null) {
+                        provider.releaseTunnel(tunnel);
+                    }
+                } else {
+                    Set<ProviderId> ids = getProviders();
+                    for (ProviderId providerId : ids) {
+                        TunnelProvider provider = getProvider(providerId);
+                        provider.releaseTunnel(tunnel);
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    public Tunnel borrowTunnel(ApplicationId consumerId, TunnelId tunnelId,
+                                  Annotations... annotations) {
+        return store.borrowTunnel(consumerId, tunnelId, annotations);
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId consumerId,
+                                              TunnelName tunnelName,
+                                              Annotations... annotations) {
+        return store.borrowTunnel(consumerId, tunnelName, annotations);
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId consumerId,
+                                              TunnelEndPoint src, TunnelEndPoint dst,
+                                              Annotations... annotations) {
+        Collection<Tunnel> tunnels = store.borrowTunnel(consumerId, src,
+                                                           dst, annotations);
+        if (tunnels == null || tunnels.isEmpty()) {
+            Tunnel tunnel = new DefaultTunnel(null, src, dst, null, null, null,
+                                              null, null, annotations);
+            Set<ProviderId> ids = getProviders();
+            for (ProviderId providerId : ids) {
+                TunnelProvider provider = getProvider(providerId);
+                provider.setupTunnel(tunnel, null);
+            }
+        }
+        return tunnels;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId consumerId,
+                                              TunnelEndPoint src, TunnelEndPoint dst,
+                                              Type type, Annotations... annotations) {
+        Collection<Tunnel> tunnels = store.borrowTunnel(consumerId, src,
+                                                           dst, type,
+                                                           annotations);
+        if (tunnels == null || tunnels.isEmpty()) {
+            Tunnel tunnel = new DefaultTunnel(null, src, dst, type, null, null,
+                                              null, null, annotations);
+            Set<ProviderId> ids = getProviders();
+            for (ProviderId providerId : ids) {
+                TunnelProvider provider = getProvider(providerId);
+                provider.setupTunnel(tunnel, null);
+            }
+        }
+        return tunnels;
+    }
+
+    @Override
+    public TunnelId setupTunnel(ApplicationId producerId, ElementId srcElementId, Tunnel tunnel, Path path) {
+        // TODO: producerId to check if really required to consider while setup the tunnel.
+        checkNotNull(tunnel, TUNNNEL_NULL);
+        TunnelId tunnelId = store.createOrUpdateTunnel(tunnel, State.INIT);
+        if (tunnelId != null) {
+            Set<ProviderId> ids = getProviders();
+            Tunnel newT = queryTunnel(tunnelId);
+            for (ProviderId providerId : ids) {
+                TunnelProvider provider = getProvider(providerId);
+                provider.setupTunnel(srcElementId, newT, path);
+            }
+        }
+        return tunnelId;
+    }
+
+    @Override
+    public boolean downTunnel(ApplicationId producerId, TunnelId tunnelId) {
+        // TODO: producerId to check if really required to consider while deleting the tunnel.
+        checkNotNull(tunnelId, TUNNNEL_ID_NULL);
+        Tunnel tunnel = store.queryTunnel(tunnelId);
+        if (tunnel != null) {
+            TunnelId updtTunnelId = store.createOrUpdateTunnel(tunnel, State.INACTIVE);
+            if (updtTunnelId != null) {
+                Set<ProviderId> ids = getProviders();
+                for (ProviderId providerId : ids) {
+                    TunnelProvider provider = getProvider(providerId);
+                    provider.releaseTunnel(tunnel);
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId,
+                                     TunnelId tunnelId, Annotations... annotations) {
+        return store.returnTunnel(consumerId, tunnelId, annotations);
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId,
+                                     TunnelName tunnelName,
+                                     Annotations... annotations) {
+        return store.returnTunnel(consumerId, tunnelName, annotations);
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                                     TunnelEndPoint dst, Type type,
+                                     Annotations... annotations) {
+        return store.returnTunnel(consumerId, src, dst, type, annotations);
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId consumerId, TunnelEndPoint src,
+                                     TunnelEndPoint dst, Annotations... annotations) {
+        return store.returnTunnel(consumerId, src, dst, annotations);
+    }
+
+    @Override
+    public Tunnel queryTunnel(TunnelId tunnelId) {
+        return store.queryTunnel(tunnelId);
+    }
+
+    @Override
+    public Collection<TunnelSubscription> queryTunnelSubscription(ApplicationId consumerId) {
+        return store.queryTunnelSubscription(consumerId);
+    }
+
+    @Override
+    public Collection<Tunnel> queryTunnel(Type type) {
+        return store.queryTunnel(type);
+    }
+
+    @Override
+    public Collection<Tunnel> queryTunnel(TunnelEndPoint src, TunnelEndPoint dst) {
+        return store.queryTunnel(src, dst);
+    }
+
+
+    @Override
+    public Collection<Tunnel> queryAllTunnels() {
+        return store.queryAllTunnels();
+    }
+
+    @Override
+    public int tunnelCount() {
+        return store.tunnelCount();
+    }
+
+    @Override
+    protected TunnelProviderService createProviderService(TunnelProvider provider) {
+        return new InternalTunnelProviderService(provider);
+    }
+
+    private class InternalTunnelProviderService
+            extends AbstractProviderService<TunnelProvider>
+            implements TunnelProviderService {
+        protected InternalTunnelProviderService(TunnelProvider provider) {
+            super(provider);
+        }
+
+
+        @Override
+        public TunnelId tunnelAdded(TunnelDescription tunnel) {
+            Tunnel storedTunnel = new DefaultTunnel(provider().id(),
+                                                    tunnel.src(), tunnel.dst(),
+                                                    tunnel.type(),
+                                                    tunnel.groupId(),
+                                                    tunnel.id(),
+                                                    tunnel.tunnelName(),
+                                                    tunnel.path(),
+                                                    tunnel.resource(),
+                                                    tunnel.annotations());
+            return store.createOrUpdateTunnel(storedTunnel);
+        }
+
+        @Override
+        public TunnelId tunnelAdded(TunnelDescription tunnel, State state) {
+            Tunnel storedTunnel = new DefaultTunnel(provider().id(),
+                                                    tunnel.src(), tunnel.dst(),
+                                                    tunnel.type(),
+                                                    state,
+                                                    tunnel.groupId(),
+                                                    tunnel.id(),
+                                                    tunnel.tunnelName(),
+                                                    tunnel.path(),
+                                                    tunnel.resource(),
+                                                    tunnel.annotations());
+            return store.createOrUpdateTunnel(storedTunnel);
+        }
+
+        @Override
+        public void tunnelUpdated(TunnelDescription tunnel) {
+            Tunnel storedTunnel = new DefaultTunnel(provider().id(),
+                                                    tunnel.src(), tunnel.dst(),
+                                                    tunnel.type(),
+                                                    tunnel.groupId(),
+                                                    tunnel.id(),
+                                                    tunnel.tunnelName(),
+                                                    tunnel.path(),
+                                                    tunnel.resource(),
+                                                    tunnel.annotations());
+            store.createOrUpdateTunnel(storedTunnel);
+        }
+
+        @Override
+        public void tunnelUpdated(TunnelDescription tunnel, State state) {
+            Tunnel storedTunnel = new DefaultTunnel(provider().id(),
+                                                    tunnel.src(), tunnel.dst(),
+                                                    tunnel.type(),
+                                                    state,
+                                                    tunnel.groupId(),
+                                                    tunnel.id(),
+                                                    tunnel.tunnelName(),
+                                                    tunnel.path(),
+                                                    tunnel.resource(),
+                                                    tunnel.annotations());
+            store.createOrUpdateTunnel(storedTunnel, state);
+        }
+
+        @Override
+        public void tunnelRemoved(TunnelDescription tunnel) {
+            if (tunnel.id() != null) {
+                store.deleteTunnel(tunnel.id());
+                return;
+            }
+            if (tunnel.src() != null && tunnel.dst() != null
+                    && tunnel.type() != null) {
+                store.deleteTunnel(tunnel.src(), tunnel.dst(), tunnel.type(),
+                                   provider().id());
+                return;
+            }
+            if (tunnel.src() != null && tunnel.dst() != null
+                    && tunnel.type() == null) {
+                store.deleteTunnel(tunnel.src(), tunnel.dst(), provider().id());
+                return;
+            }
+        }
+
+
+        @Override
+        public Tunnel tunnelQueryById(TunnelId tunnelId) {
+            return store.queryTunnel(tunnelId);
+        }
+
+
+    }
+
+    private class InternalStoreDelegate implements TunnelStoreDelegate {
+        @Override
+        public void notify(TunnelEvent event) {
+            if (event != null) {
+                post(event);
+            }
+        }
+    }
+
+    @Override
+    public Iterable<Tunnel> getTunnels(DeviceId deviceId) {
+        return Collections.emptyList();
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/impl/package-info.java
new file mode 100644
index 0000000..5926b0a
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Core subsystem for tracking global inventory of tunnels.
+ */
+package org.onosproject.incubator.net.tunnel.impl;
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/store/impl/DistributedTunnelStore.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/store/impl/DistributedTunnelStore.java
new file mode 100644
index 0000000..3bf5e35
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/store/impl/DistributedTunnelStore.java
@@ -0,0 +1,583 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.store.impl;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.core.IdGenerator;
+import org.onosproject.incubator.net.tunnel.DefaultTunnel;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.Tunnel.State;
+import org.onosproject.incubator.net.tunnel.Tunnel.Type;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelEvent;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelName;
+import org.onosproject.incubator.net.tunnel.TunnelStore;
+import org.onosproject.incubator.net.tunnel.TunnelStoreDelegate;
+import org.onosproject.incubator.net.tunnel.TunnelSubscription;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.EventuallyConsistentMap;
+import org.onosproject.store.service.EventuallyConsistentMapEvent;
+import org.onosproject.store.service.EventuallyConsistentMapListener;
+import org.onosproject.store.service.MultiValuedTimestamp;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.WallClockTimestamp;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.PUT;
+import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.REMOVE;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Manages inventory of tunnel in distributed data store that uses optimistic
+ * replication and gossip based techniques.
+ */
+@Component(immediate = true, service = TunnelStore.class)
+public class DistributedTunnelStore
+        extends AbstractStore<TunnelEvent, TunnelStoreDelegate>
+        implements TunnelStore {
+
+    private final Logger log = getLogger(getClass());
+
+    /**
+     * The topic used for obtaining globally unique ids.
+     */
+    private String tunnelOpTopic = "tunnel-ops-ids";
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterCommunicationService clusterCommunicator;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterService clusterService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected StorageService storageService;
+
+    // tunnel identity as map key in the store.
+    private EventuallyConsistentMap<TunnelId, Tunnel> tunnelIdAsKeyStore;
+    // maintains records that app subscribes tunnel.
+    private EventuallyConsistentMap<ApplicationId, Set<TunnelSubscription>> orderRelationship;
+
+    // tunnel name as map key.
+    private final Map<TunnelName, Set<TunnelId>> tunnelNameAsKeyMap = Maps.newConcurrentMap();
+    // maintains all the tunnels between source and destination.
+    private final Map<TunnelKey, Set<TunnelId>> srcAndDstKeyMap = Maps.newConcurrentMap();
+    // maintains all the tunnels by tunnel type.
+    private final Map<Tunnel.Type, Set<TunnelId>> typeKeyMap = Maps.newConcurrentMap();
+
+    private IdGenerator idGenerator;
+
+    private EventuallyConsistentMapListener<TunnelId, Tunnel> tunnelUpdateListener =
+            new InternalTunnelChangeEventListener();
+
+    @Activate
+    public void activate() {
+        KryoNamespace.Builder serializer = KryoNamespace.newBuilder()
+                .register(KryoNamespaces.API)
+                .register(MultiValuedTimestamp.class);
+        tunnelIdAsKeyStore = storageService
+                .<TunnelId, Tunnel>eventuallyConsistentMapBuilder()
+                .withName("all_tunnel").withSerializer(serializer)
+                .withTimestampProvider((k, v) -> new WallClockTimestamp()).build();
+        orderRelationship = storageService
+                .<ApplicationId, Set<TunnelSubscription>>eventuallyConsistentMapBuilder()
+                .withName("type_tunnel").withSerializer(serializer)
+                .withTimestampProvider((k, v) -> new WallClockTimestamp()).build();
+        idGenerator = coreService.getIdGenerator(tunnelOpTopic);
+        tunnelIdAsKeyStore.addListener(tunnelUpdateListener);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        tunnelIdAsKeyStore.removeListener(tunnelUpdateListener);
+        orderRelationship.destroy();
+        tunnelIdAsKeyStore.destroy();
+        srcAndDstKeyMap.clear();
+        typeKeyMap.clear();
+        tunnelNameAsKeyMap.clear();
+        log.info("Stopped");
+    }
+
+    @Override
+    public TunnelId createOrUpdateTunnel(Tunnel tunnel) {
+        return handleCreateOrUpdateTunnel(tunnel, null);
+    }
+
+    @Override
+    public TunnelId createOrUpdateTunnel(Tunnel tunnel, State state) {
+        return handleCreateOrUpdateTunnel(tunnel, state);
+    }
+
+    private TunnelId handleCreateOrUpdateTunnel(Tunnel tunnel, State state) {
+        // tunnelIdAsKeyStore.
+        if (tunnel.tunnelId() != null && !"".equals(tunnel.tunnelId().toString())) {
+            Tunnel old = tunnelIdAsKeyStore.get(tunnel.tunnelId());
+            if (old == null) {
+                log.info("This tunnel[" + tunnel.tunnelId() + "] is not available.");
+                return tunnel.tunnelId();
+            }
+            DefaultAnnotations oldAnno = (DefaultAnnotations) old.annotations();
+            SparseAnnotations newAnno = (SparseAnnotations) tunnel.annotations();
+            State newTunnelState = (state != null) ? state : old.state();
+            Tunnel newT = new DefaultTunnel(old.providerId(), old.src(),
+                                            old.dst(), old.type(),
+                                            newTunnelState, old.groupId(),
+                                            old.tunnelId(),
+                                            old.tunnelName(),
+                                            old.path(),
+                                            old.resource(),
+                                            DefaultAnnotations.merge(oldAnno, newAnno));
+            tunnelIdAsKeyStore.put(tunnel.tunnelId(), newT);
+            TunnelEvent event = new TunnelEvent(TunnelEvent.Type.TUNNEL_UPDATED,
+                                                tunnel);
+            notifyDelegate(event);
+            return tunnel.tunnelId();
+        } else {
+            TunnelId tunnelId = TunnelId.valueOf(String.valueOf(idGenerator.getNewId()));
+            State tunnelState = (state != null) ? state : tunnel.state();
+            Tunnel newT = new DefaultTunnel(tunnel.providerId(), tunnel.src(),
+                                            tunnel.dst(), tunnel.type(),
+                                            tunnelState, tunnel.groupId(),
+                                            tunnelId,
+                                            tunnel.tunnelName(),
+                                            tunnel.path(),
+                                            tunnel.resource(),
+                                            tunnel.annotations());
+            tunnelIdAsKeyStore.put(tunnelId, newT);
+
+            TunnelEvent event = new TunnelEvent(TunnelEvent.Type.TUNNEL_ADDED,
+                                                tunnel);
+            notifyDelegate(event);
+            return tunnelId;
+        }
+    }
+
+    @Override
+    public void deleteTunnel(TunnelId tunnelId) {
+        Tunnel deletedTunnel = tunnelIdAsKeyStore.get(tunnelId);
+        if (deletedTunnel == null) {
+            return;
+        }
+
+        tunnelIdAsKeyStore.remove(tunnelId);
+
+        TunnelEvent event = new TunnelEvent(TunnelEvent.Type.TUNNEL_REMOVED,
+                                            deletedTunnel);
+        notifyDelegate(event);
+    }
+
+    @Override
+    public void deleteTunnel(TunnelEndPoint src, TunnelEndPoint dst,
+                             ProviderId producerName) {
+        TunnelKey key = TunnelKey.tunnelKey(src, dst);
+        Set<TunnelId> idSet = srcAndDstKeyMap.get(key);
+        if (idSet == null) {
+            return;
+        }
+        Tunnel deletedTunnel = null;
+        TunnelEvent event = null;
+        List<TunnelEvent> ls = new ArrayList<TunnelEvent>();
+        for (TunnelId id : idSet) {
+            deletedTunnel = tunnelIdAsKeyStore.get(id);
+
+            if (producerName == null || producerName.equals(deletedTunnel.providerId())) {
+                tunnelIdAsKeyStore.remove(deletedTunnel.tunnelId());
+
+                event = new TunnelEvent(TunnelEvent.Type.TUNNEL_REMOVED,
+                                        deletedTunnel);
+                ls.add(event);
+            }
+        }
+
+        if (!ls.isEmpty()) {
+            notifyDelegate(ls);
+        }
+    }
+
+    @Override
+    public void deleteTunnel(TunnelEndPoint src, TunnelEndPoint dst, Type type,
+                             ProviderId producerName) {
+        TunnelKey key = TunnelKey.tunnelKey(src, dst);
+        Set<TunnelId> idSet = srcAndDstKeyMap.get(key);
+        if (idSet == null) {
+            return;
+        }
+        Tunnel deletedTunnel = null;
+        TunnelEvent event = null;
+        List<TunnelEvent> ls = new ArrayList<TunnelEvent>();
+        for (TunnelId id : idSet) {
+            deletedTunnel = tunnelIdAsKeyStore.get(id);
+
+            if (type.equals(deletedTunnel.type()) && (producerName == null ||
+                    producerName.equals(deletedTunnel.providerId()))) {
+                tunnelIdAsKeyStore.remove(deletedTunnel.tunnelId());
+
+                event = new TunnelEvent(TunnelEvent.Type.TUNNEL_REMOVED,
+                                        deletedTunnel);
+                ls.add(event);
+            }
+        }
+
+        if (!ls.isEmpty()) {
+            notifyDelegate(ls);
+        }
+    }
+
+    @Override
+    public Tunnel borrowTunnel(ApplicationId appId, TunnelId tunnelId,
+                               Annotations... annotations) {
+        Set<TunnelSubscription> orderSet = orderRelationship.get(appId);
+        if (orderSet == null) {
+            orderSet = new HashSet<TunnelSubscription>();
+        }
+        TunnelSubscription order = new TunnelSubscription(appId, null, null, tunnelId, null, null,
+                                annotations);
+        Tunnel result = tunnelIdAsKeyStore.get(tunnelId);
+        if (result == null || Tunnel.State.INACTIVE.equals(result.state())) {
+            return null;
+        }
+
+        orderSet.add(order);
+        orderRelationship.put(appId, orderSet);
+        return result;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId appId,
+                                           TunnelEndPoint src,
+                                           TunnelEndPoint dst,
+                                           Annotations... annotations) {
+        Set<TunnelSubscription> orderSet = orderRelationship.get(appId);
+        if (orderSet == null) {
+            orderSet = new HashSet<TunnelSubscription>();
+        }
+        TunnelSubscription order = new TunnelSubscription(appId, src, dst, null, null, null, annotations);
+        boolean isExist = orderSet.contains(order);
+        if (!isExist) {
+            orderSet.add(order);
+        }
+        orderRelationship.put(appId, orderSet);
+        TunnelKey key = TunnelKey.tunnelKey(src, dst);
+        Set<TunnelId> idSet = srcAndDstKeyMap.get(key);
+        if (idSet == null || idSet.isEmpty()) {
+            return Collections.emptySet();
+        }
+        Collection<Tunnel> tunnelSet = new HashSet<Tunnel>();
+        for (TunnelId tunnelId : idSet) {
+            Tunnel result = tunnelIdAsKeyStore.get(tunnelId);
+            if (Tunnel.State.ACTIVE.equals(result.state())) {
+                tunnelSet.add(result);
+            }
+        }
+        return tunnelSet;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId appId,
+                                           TunnelEndPoint src,
+                                           TunnelEndPoint dst, Type type,
+                                           Annotations... annotations) {
+        Set<TunnelSubscription> orderSet = orderRelationship.get(appId);
+        if (orderSet == null) {
+            orderSet = new HashSet<TunnelSubscription>();
+        }
+        TunnelSubscription order = new TunnelSubscription(appId, src, dst, null, type, null, annotations);
+        boolean isExist = orderSet.contains(order);
+        if (!isExist) {
+            orderSet.add(order);
+        }
+        orderRelationship.put(appId, orderSet);
+        TunnelKey key = TunnelKey.tunnelKey(src, dst);
+        Set<TunnelId> idSet = srcAndDstKeyMap.get(key);
+        if (idSet == null || idSet.isEmpty()) {
+            return Collections.emptySet();
+        }
+        Collection<Tunnel> tunnelSet = new HashSet<Tunnel>();
+        for (TunnelId tunnelId : idSet) {
+            Tunnel result = tunnelIdAsKeyStore.get(tunnelId);
+            if (type.equals(result.type())
+                    && Tunnel.State.ACTIVE.equals(result.state())) {
+                tunnelSet.add(result);
+            }
+        }
+        return tunnelSet;
+    }
+
+    @Override
+    public Collection<Tunnel> borrowTunnel(ApplicationId appId,
+                                           TunnelName tunnelName,
+                                           Annotations... annotations) {
+        Set<TunnelSubscription> orderSet = orderRelationship.get(appId);
+        if (orderSet == null) {
+            orderSet = new HashSet<TunnelSubscription>();
+        }
+        TunnelSubscription order = new TunnelSubscription(appId, null, null, null, null, tunnelName,
+                                annotations);
+        boolean isExist = orderSet.contains(order);
+
+        Set<TunnelId> idSet = tunnelNameAsKeyMap.get(tunnelName);
+        if (idSet == null || idSet.isEmpty()) {
+            return Collections.emptySet();
+        }
+        Collection<Tunnel> tunnelSet = new HashSet<Tunnel>();
+        for (TunnelId tunnelId : idSet) {
+            Tunnel result = tunnelIdAsKeyStore.get(tunnelId);
+            if (Tunnel.State.ACTIVE.equals(result.state())) {
+                tunnelSet.add(result);
+            }
+        }
+
+        if (!tunnelSet.isEmpty() && !isExist) {
+            orderSet.add(order);
+            orderRelationship.put(appId, orderSet);
+        }
+
+        return tunnelSet;
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId appId, TunnelName tunnelName,
+                                Annotations... annotations) {
+        TunnelSubscription order = new TunnelSubscription(appId, null, null, null, null, tunnelName,
+                                annotations);
+        return deleteOrder(order);
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId appId, TunnelId tunnelId,
+                                Annotations... annotations) {
+        TunnelSubscription order = new TunnelSubscription(appId, null, null, tunnelId, null, null,
+                                annotations);
+        return deleteOrder(order);
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId appId, TunnelEndPoint src,
+                                TunnelEndPoint dst, Type type,
+                                Annotations... annotations) {
+        TunnelSubscription order = new TunnelSubscription(appId, src, dst, null, type, null, annotations);
+        return deleteOrder(order);
+    }
+
+    @Override
+    public boolean returnTunnel(ApplicationId appId, TunnelEndPoint src,
+                                TunnelEndPoint dst, Annotations... annotations) {
+        TunnelSubscription order = new TunnelSubscription(appId, src, dst, null, null, null, annotations);
+        return deleteOrder(order);
+    }
+
+    private boolean deleteOrder(TunnelSubscription order) {
+        Set<TunnelSubscription> orderSet = orderRelationship.get(order.consumerId());
+        if (orderSet == null) {
+            return true;
+        }
+        if (orderSet.contains(order)) {
+            orderSet.remove(order);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public Tunnel queryTunnel(TunnelId tunnelId) {
+        return tunnelIdAsKeyStore.get(tunnelId);
+    }
+
+    @Override
+    public Collection<TunnelSubscription> queryTunnelSubscription(ApplicationId appId) {
+        return orderRelationship.get(appId) != null ? ImmutableSet.copyOf(orderRelationship
+                .get(appId)) : Collections.emptySet();
+    }
+
+    @Override
+    public Collection<Tunnel> queryTunnel(Type type) {
+        Collection<Tunnel> result = new HashSet<Tunnel>();
+        Set<TunnelId> tunnelIds = typeKeyMap.get(type);
+        if (tunnelIds == null) {
+            return Collections.emptySet();
+        }
+        for (TunnelId id : tunnelIds) {
+            result.add(tunnelIdAsKeyStore.get(id));
+        }
+        return result.isEmpty() ? Collections.emptySet() : ImmutableSet
+                .copyOf(result);
+    }
+
+    @Override
+    public Collection<Tunnel> queryTunnel(TunnelEndPoint src, TunnelEndPoint dst) {
+        Collection<Tunnel> result = new HashSet<Tunnel>();
+        TunnelKey key = TunnelKey.tunnelKey(src, dst);
+        Set<TunnelId> tunnelIds = srcAndDstKeyMap.get(key);
+        if (tunnelIds == null) {
+            return Collections.emptySet();
+        }
+        for (TunnelId id : tunnelIds) {
+            result.add(tunnelIdAsKeyStore.get(id));
+        }
+        return result.isEmpty() ? Collections.emptySet() : ImmutableSet
+                .copyOf(result);
+    }
+
+    @Override
+    public Collection<Tunnel> queryAllTunnels() {
+        return tunnelIdAsKeyStore.values();
+    }
+
+    @Override
+    public int tunnelCount() {
+        return tunnelIdAsKeyStore.size();
+    }
+
+    /**
+     * Uses source TunnelPoint and destination TunnelPoint as map key.
+     */
+    private static final class TunnelKey {
+        private final TunnelEndPoint src;
+        private final TunnelEndPoint dst;
+
+        private TunnelKey(TunnelEndPoint src, TunnelEndPoint dst) {
+            this.src = src;
+            this.dst = dst;
+
+        }
+
+        /**
+         * create a map key.
+         *
+         * @param src
+         * @param dst
+         * @return a key using source ip and destination ip
+         */
+        static TunnelKey tunnelKey(TunnelEndPoint src, TunnelEndPoint dst) {
+            return new TunnelKey(src, dst);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(src, dst);
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj instanceof TunnelKey) {
+                final TunnelKey other = (TunnelKey) obj;
+                return Objects.equals(this.src, other.src)
+                        && Objects.equals(this.dst, other.dst);
+            }
+            return false;
+        }
+
+        @Override
+        public String toString() {
+            return MoreObjects.toStringHelper(getClass()).add("src", src)
+                    .add("dst", dst).toString();
+        }
+    }
+
+    /**
+     * Eventually consistent map listener for tunnel change event which updated the local map based on event.
+     */
+    private class InternalTunnelChangeEventListener
+            implements EventuallyConsistentMapListener<TunnelId, Tunnel> {
+        @Override
+        public void event(EventuallyConsistentMapEvent<TunnelId, Tunnel> event) {
+            TunnelId tunnelId = event.key();
+            Tunnel tunnel = event.value();
+
+            if (event.type() == PUT) {
+
+                // Update tunnel name map
+                Set<TunnelId> tunnelNameSet = tunnelNameAsKeyMap.get(tunnel
+                        .tunnelName());
+                if (tunnelNameSet == null) {
+                    tunnelNameSet = new HashSet<TunnelId>();
+                }
+                tunnelNameSet.add(tunnelId);
+                tunnelNameAsKeyMap.put(tunnel.tunnelName(), tunnelNameSet);
+
+                // Update tunnel source and destination map
+                TunnelKey key = TunnelKey.tunnelKey(tunnel.src(), tunnel.dst());
+                Set<TunnelId> srcAndDstKeySet = srcAndDstKeyMap.get(key);
+                if (srcAndDstKeySet == null) {
+                    srcAndDstKeySet = new HashSet<TunnelId>();
+                }
+                srcAndDstKeySet.add(tunnelId);
+                srcAndDstKeyMap.put(key, srcAndDstKeySet);
+
+                // Update tunnel type map
+                Set<TunnelId> typeKeySet = typeKeyMap.get(tunnel.type());
+                if (typeKeySet == null) {
+                    typeKeySet = new HashSet<TunnelId>();
+                }
+                typeKeySet.add(tunnelId);
+                typeKeyMap.put(tunnel.type(), typeKeySet);
+            } else if (event.type() == REMOVE) {
+
+                // Update tunnel name map
+                tunnelNameAsKeyMap.get(tunnel.tunnelName()).remove(tunnelId);
+                if (tunnelNameAsKeyMap.get(tunnel.tunnelName()).isEmpty()) {
+                    tunnelNameAsKeyMap.remove(tunnel.tunnelName());
+                }
+
+                // Update tunnel source and destination map
+                TunnelKey key = TunnelKey.tunnelKey(tunnel.src(), tunnel.dst());
+                srcAndDstKeyMap.get(key).remove(tunnelId);
+                if (srcAndDstKeyMap.get(key).isEmpty()) {
+                    srcAndDstKeyMap.remove(key);
+                }
+
+                // Update tunnel type map
+                typeKeyMap.get(tunnel.type()).remove(tunnelId);
+                if (typeKeyMap.get(tunnel.type()).isEmpty()) {
+                    typeKeyMap.remove(tunnel.type());
+                }
+            }
+        }
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/store/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/store/impl/package-info.java
new file mode 100644
index 0000000..09d5277
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/store/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Implementation of distributed tunnel store using p2p synchronization protocol.
+ */
+package org.onosproject.incubator.net.tunnel.store.impl;
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/ui/TunnelViewMessageHandler.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/ui/TunnelViewMessageHandler.java
new file mode 100644
index 0000000..7ffd50d
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/ui/TunnelViewMessageHandler.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.tunnel.ui;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.ImmutableSet;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelEndPointFormatter;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.ui.RequestHandler;
+import org.onosproject.ui.UiMessageHandler;
+import org.onosproject.ui.table.TableModel;
+import org.onosproject.ui.table.TableRequestHandler;
+import org.onosproject.ui.table.cell.EnumFormatter;
+
+import java.util.Collection;
+
+public class TunnelViewMessageHandler extends UiMessageHandler {
+    private static final String TUNNEL_DATA_REQ = "tunnelDataRequest";
+    private static final String TUNNEL_DATA_RESP = "tunnelDataResponse";
+    private static final String TUNNELS = "tunnels";
+    private static final String ID = "id";
+    private static final String NAME = "name";
+    private static final String ONE = "one";
+    private static final String TWO = "two";
+    private static final String TYPE = "type";
+    private static final String GROUP_ID = "group_id";
+
+    private static final String BANDWIDTH = "bandwidth";
+    private static final String PATH = "path";
+
+
+    private static final String[] COL_IDS = {
+            ID, NAME, ONE, TWO, TYPE, GROUP_ID,
+            BANDWIDTH, PATH
+    };
+
+    @Override
+    protected Collection<RequestHandler> createRequestHandlers() {
+        return ImmutableSet.of(new TunnelDataRequestHandler());
+    }
+
+    private final class TunnelDataRequestHandler extends TableRequestHandler {
+
+        private static final String NO_ROWS_MESSAGE = "No tunnels found";
+
+        public TunnelDataRequestHandler() {
+            super(TUNNEL_DATA_REQ, TUNNEL_DATA_RESP, TUNNELS);
+        }
+
+        @Override
+        protected String[] getColumnIds() {
+            return COL_IDS;
+        }
+
+        @Override
+        protected String noRowsMessage(ObjectNode payload) {
+            return NO_ROWS_MESSAGE;
+        }
+
+        @Override
+        protected TableModel createTableModel() {
+            TableModel tm = super.createTableModel();
+            //TODO add more formater class so that we can get a more readable table
+            tm.setFormatter(ONE, TunnelEndPointFormatter.INSTANCE);
+            tm.setFormatter(TWO, TunnelEndPointFormatter.INSTANCE);
+            tm.setFormatter(TYPE, EnumFormatter.INSTANCE);
+            return tm;
+        }
+
+        @Override
+        protected void populateTable(TableModel tm, ObjectNode payload) {
+            TunnelService ts = get(TunnelService.class);
+            ts.queryAllTunnels().forEach(tunnel -> populateRow(tm.addRow(), tunnel));
+        }
+
+    }
+
+    private void populateRow(TableModel.Row row, Tunnel tunnel) {
+        row.cell(ID, tunnel.tunnelId().id())
+                .cell(NAME, tunnel.tunnelName().value())
+                .cell(ONE, tunnel.src())
+                .cell(TWO, tunnel.dst())
+                .cell(TYPE, tunnel.type())
+                .cell(GROUP_ID, tunnel.groupId().id())
+                .cell(BANDWIDTH, tunnel.annotations().value(BANDWIDTH))
+                .cell(PATH, tunnel.path());
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/ui/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/ui/package-info.java
new file mode 100644
index 0000000..1b7baa0
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/tunnel/ui/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * GUI for the tunnel subsystem.
+ */
+package org.onosproject.incubator.net.tunnel.ui;