diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java
new file mode 100644
index 0000000..f76007f
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.floatingip;
+
+import org.onosproject.event.AbstractEvent;
+import org.onosproject.vtnrsc.FloatingIp;
+
+/**
+ * Describes network Floating IP event.
+ */
+public class FloatingIpEvent
+        extends AbstractEvent<FloatingIpEvent.Type, FloatingIp> {
+    /**
+     * Type of Floating IP events.
+     */
+    public enum Type {
+        /**
+         * Signifies that Floating IP has been created.
+         */
+        FLOATINGIP_PUT,
+        /**
+         * Signifies that Floating IP has been deleted.
+         */
+        FLOATINGIP_DELETE
+    }
+
+    /**
+     * Creates an event of a given type and for the specified Floating IP.
+     *
+     * @param type Floating IP event type
+     * @param floagingIp Floating IP subject
+     */
+    public FloatingIpEvent(Type type, FloatingIp floagingIp) {
+        super(type, floagingIp);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified Floating IP.
+     *
+     * @param type Floating IP event type
+     * @param floagingIp Floating IP subject
+     * @param time occurrence time
+     */
+    public FloatingIpEvent(Type type, FloatingIp floagingIp, long time) {
+        super(type, floagingIp, time);
+    }
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpListener.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpListener.java
new file mode 100644
index 0000000..a42af13
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpListener.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.floatingip;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of Floating IP related events.
+ */
+public interface FloatingIpListener extends EventListener<FloatingIpEvent> {
+
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpService.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpService.java
new file mode 100644
index 0000000..3f6f251
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpService.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.floatingip;
+
+import java.util.Collection;
+
+import org.onlab.packet.IpAddress;
+import org.onosproject.vtnrsc.FloatingIp;
+import org.onosproject.vtnrsc.FloatingIpId;
+import org.onosproject.vtnrsc.TenantId;
+
+/**
+ * Service for interacting with the inventory of floating IP.
+ */
+public interface FloatingIpService {
+    /**
+     * Returns exists or not of specific floatingIp identifier.
+     *
+     * @param floatingIpId floatingIp identifier
+     * @return true or false
+     */
+    boolean exists(FloatingIpId floatingIpId);
+
+    /**
+     * Returns is used or not of specific floating IP address.
+     *
+     * @param floatingIpAddr floatingIp address
+     * @param floatingIpId floatingIp identifier
+     * @return true or false
+     */
+    boolean floatingIpIsUsed(IpAddress floatingIpAddr, FloatingIpId floatingIpId);
+
+    /**
+     * Returns is used or not of specific fixed IP address.
+     *
+     * @param fixedIpAddr fixedIp address
+     * @param tenantId the tenant identifier of floating IP
+     * @param floatingIpId floatingIp identifier
+     * @return true or false
+     */
+    boolean fixedIpIsUsed(IpAddress fixedIpAddr, TenantId tenantId, FloatingIpId floatingIpId);
+
+    /**
+     * Returns a collection of the currently known floating IP.
+     *
+     * @return collection of floating IP
+     */
+    Collection<FloatingIp> getFloatingIps();
+
+    /**
+     * Returns the floatingIp with the specified identifier.
+     *
+     * @param floatingIpId floatingIp identifier
+     * @return floatingIp or null if one with the given identifier is not known
+     */
+    FloatingIp getFloatingIp(FloatingIpId floatingIpId);
+
+    /**
+     * Creates new floatingIps.
+     *
+     * @param floatingIps the collection of floatingIp
+     * @return true if the identifier floatingIp has been created right
+     */
+    boolean createFloatingIps(Collection<FloatingIp> floatingIps);
+
+    /**
+     * Updates existing floatingIps.
+     *
+     * @param floatingIps the collection of floatingIp
+     * @return true if all floatingIp were updated successfully
+     */
+    boolean updateFloatingIps(Collection<FloatingIp> floatingIps);
+
+    /**
+     * Removes the specified floatingIp from the store.
+     *
+     * @param floatingIpIds the collection of floatingIp identifier
+     * @return true if remove identifier floatingIp successfully
+     */
+    boolean removeFloatingIps(Collection<FloatingIpId> floatingIpIds);
+
+    /**
+     * Adds the specified listener to floating Ip manager.
+     *
+     * @param listener floating Ip listener
+     */
+    void addListener(FloatingIpListener listener);
+
+    /**
+     * Removes the specified listener to floating Ip manager.
+     *
+     * @param listener floating Ip listener
+     */
+    void removeListener(FloatingIpListener listener);
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/package-info.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/package-info.java
new file mode 100644
index 0000000..274cbdd
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 interacting with the inventory of FloatingIp.
+ */
+package org.onosproject.vtnrsc.floatingip;
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterEvent.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterEvent.java
new file mode 100644
index 0000000..25bd7b3
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterEvent.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.router;
+
+import org.onosproject.event.AbstractEvent;
+import org.onosproject.vtnrsc.Router;
+
+/**
+ * Describes network Router event.
+ */
+public class RouterEvent extends AbstractEvent<RouterEvent.Type, Router> {
+    /**
+     * Type of Router events.
+     */
+    public enum Type {
+        /**
+         * Signifies that router has been created.
+         */
+        ROUTER_PUT,
+        /**
+         * Signifies that router has been deleted.
+         */
+        ROUTER_DELETE
+    }
+
+    /**
+     * Creates an event of a given type and for the specified Router.
+     *
+     * @param type Router event type
+     * @param router Router subject
+     */
+    public RouterEvent(Type type, Router router) {
+        super(type, router);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified Router.
+     *
+     * @param type Router event type
+     * @param router Router subject
+     * @param time occurrence time
+     */
+    public RouterEvent(Type type, Router router, long time) {
+        super(type, router, time);
+    }
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterListener.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterListener.java
new file mode 100644
index 0000000..dc77298
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterListener.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.router;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of Router related events.
+ */
+public interface RouterListener extends EventListener<RouterEvent> {
+
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterService.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterService.java
new file mode 100644
index 0000000..362fa02
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/RouterService.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.router;
+
+import java.util.Collection;
+
+import org.onosproject.vtnrsc.Router;
+import org.onosproject.vtnrsc.RouterId;
+
+/**
+ * Service for interacting with the inventory of Routers.
+ */
+public interface RouterService {
+    /**
+     * Returns exists or not of specific router identifier.
+     *
+     * @param routerId router identifier
+     * @return true or false
+     */
+    boolean exists(RouterId routerId);
+
+    /**
+     * Returns a collection of the currently known Routers.
+     *
+     * @return collection of Routers
+     */
+    Collection<Router> getRouters();
+
+    /**
+     * Returns the Router with the specified identifier.
+     *
+     * @param routerId Router identifier
+     * @return Router or null if one with the given identifier is not known
+     */
+    Router getRouter(RouterId routerId);
+
+    /**
+     * Creates new Routers.
+     *
+     * @param routers the collection of Routers
+     * @return true if the identifier Router has been created right.
+     *         false if the identifier Router is failed to store
+     */
+    boolean createRouters(Collection<Router> routers);
+
+    /**
+     * Updates existing Routers.
+     *
+     * @param routers the collection of Routers
+     * @return true if Routers were updated successfully.
+     *         false if Routers were updated failed
+     */
+    boolean updateRouters(Collection<Router> routers);
+
+    /**
+     * Removes the specified Routers from the store.
+     *
+     * @param routerIds the collection of Routers identifier
+     * @return true if remove identifier Routers successfully. false if remove
+     *         identifier Routers failed
+     */
+    boolean removeRouters(Collection<RouterId> routerIds);
+
+    /**
+     * Adds the specified listener to Router manager.
+     *
+     * @param listener Router listener
+     */
+    void addListener(RouterListener listener);
+
+    /**
+     * Removes the specified listener to Router manager.
+     *
+     * @param listener Router listener
+     */
+    void removeListener(RouterListener listener);
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/package-info.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/package-info.java
new file mode 100644
index 0000000..fb6834a
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/router/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 interacting with the inventory of Router.
+ */
+package org.onosproject.vtnrsc.router;
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceEvent.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceEvent.java
new file mode 100644
index 0000000..7f5cfa1
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceEvent.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.routerinterface;
+
+import org.onosproject.event.AbstractEvent;
+import org.onosproject.vtnrsc.RouterInterface;
+
+/**
+ * Describes network Router Interface event.
+ */
+public class RouterInterfaceEvent
+        extends AbstractEvent<RouterInterfaceEvent.Type, RouterInterface> {
+
+    /**
+     * Type of Router Interface events.
+     */
+    public enum Type {
+        /**
+         * Signifies that router interface has been added.
+         */
+        ROUTER_INTERFACE_PUT,
+        /**
+         * Signifies that router interface has been removed.
+         */
+        ROUTER_INTERFACE_DELETE
+    }
+
+    /**
+     * Creates an event of a given type and for the specified Router Interface.
+     *
+     * @param type Router Interface event type
+     * @param routerInterface Router Interface subject
+     */
+    public RouterInterfaceEvent(Type type, RouterInterface routerInterface) {
+        super(type, routerInterface);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified Router Interface.
+     *
+     * @param type Router Interface event type.
+     * @param routerInterface Router Interface subject
+     * @param time occurrence time
+     */
+    public RouterInterfaceEvent(Type type, RouterInterface routerInterface,
+                                long time) {
+        super(type, routerInterface, time);
+    }
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceListener.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceListener.java
new file mode 100644
index 0000000..1d0dab6
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceListener.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.routerinterface;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of Router Interface related events.
+ */
+public interface RouterInterfaceListener
+        extends EventListener<RouterInterfaceEvent> {
+
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceService.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceService.java
new file mode 100644
index 0000000..8cf147a
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/RouterInterfaceService.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.routerinterface;
+
+import java.util.Collection;
+
+import org.onosproject.vtnrsc.RouterInterface;
+import org.onosproject.vtnrsc.SubnetId;
+
+/**
+ * Service for interacting with the inventory of Router interface.
+ */
+public interface RouterInterfaceService {
+    /**
+     * Returns exists or not of specific subnet identifier.
+     *
+     * @param subnetId subnet identifier
+     * @return true or false
+     */
+    boolean exists(SubnetId subnetId);
+
+    /**
+     * Returns a collection of the currently known Router interface.
+     *
+     * @return collection of RouterInterface
+     */
+    Collection<RouterInterface> getRouterInterfaces();
+
+    /**
+     * Returns the Router interface with the specified subnet identifier.
+     *
+     * @param subnetId subnet identifier
+     * @return RouterInterface or null if one with the given identifier is not
+     *         known
+     */
+    RouterInterface getRouterInterface(SubnetId subnetId);
+
+    /**
+     * Adds the specified RouterInterface.
+     *
+     * @param routerInterface the interface add to router
+     * @return true if add router interface successfully
+     */
+    boolean addRouterInterface(RouterInterface routerInterface);
+
+    /**
+     * Removes the specified RouterInterface.
+     *
+     * @param routerInterface the interface remove from router
+     * @return true if remove router interface successfully
+     */
+    boolean removeRouterInterface(RouterInterface routerInterface);
+
+    /**
+     * Adds the specified listener to Router Interface manager.
+     *
+     * @param listener Router Interface listener
+     */
+    void addListener(RouterInterfaceListener listener);
+
+    /**
+     * Removes the specified listener to RouterInterface manager.
+     *
+     * @param listener Router Interface listener
+     */
+    void removeListener(RouterInterfaceListener listener);
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/package-info.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/package-info.java
new file mode 100644
index 0000000..3804089
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/routerinterface/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 interacting with the inventory of RouterInterface.
+ */
+package org.onosproject.vtnrsc.routerinterface;
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/VtnRscService.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/VtnRscService.java
new file mode 100644
index 0000000..21161ba
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/VtnRscService.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.vtnrsc.service;
+
+import java.util.Iterator;
+
+import org.onlab.packet.MacAddress;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.HostId;
+import org.onosproject.vtnrsc.SegmentationId;
+import org.onosproject.vtnrsc.TenantId;
+import org.onosproject.vtnrsc.VirtualPortId;
+import org.onosproject.vtnrsc.event.VtnRscListener;
+
+/**
+ * Service for interacting with the inventory of Vtn resource.
+ */
+public interface VtnRscService {
+    /**
+     * Adds the specified listener.
+     *
+     * @param listener VtnRsc listener
+     */
+    void addListener(VtnRscListener listener);
+
+    /**
+     * Removes the specified listener.
+     *
+     * @param listener VtnRsc listener
+     */
+    void removeListener(VtnRscListener listener);
+
+    /**
+     * Returns the SegmentationId of tenant.
+     *
+     * @param tenantId tenant identifier
+     * @return SegmentationId the SegmentationId of tenant
+     */
+    SegmentationId getL3vni(TenantId tenantId);
+
+    /**
+     * Returns Classifier Ovs list of the specific tenant.
+     *
+     * @param tenantId tenant identifier
+     * @return iterable collection of Device
+     */
+    Iterator<Device> getClassifierOfTenant(TenantId tenantId);
+
+    /**
+     * Returns Service function forwarders Ovs list of the specific tenant.
+     *
+     * @param tenantId tenant identifier
+     * @return iterable collection of Device
+     */
+    Iterator<Device> getSFFOfTenant(TenantId tenantId);
+
+    /**
+     * Returns gateway mac address of the specific host.
+     *
+     * @param hostId host identifier
+     * @return MacAddress of host
+     */
+    MacAddress getGatewayMac(HostId hostId);
+
+    /**
+     * Checks if a specific port is a service function.
+     *
+     * @param portId port identifier
+     * @return true or false
+     */
+    boolean isServiceFunction(VirtualPortId portId);
+
+    /**
+     * Returns device identifier mapping to the specific port.
+     *
+     * @param portId port identifier
+     * @return device identifier
+     */
+    DeviceId getSFToSFFMaping(VirtualPortId portId);
+}
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/package-info.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/package-info.java
new file mode 100644
index 0000000..37af604
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 interacting with the inventory of Vtn resource.
+ */
+package org.onosproject.vtnrsc.service;