diff --git a/apps/demo/cord-gui/src/main/java/org/onosproject/cord/gui/model/XosFunctionFactory.java b/apps/demo/cord-gui/src/main/java/org/onosproject/cord/gui/model/XosFunctionFactory.java
index a91dbfb..dffabce 100644
--- a/apps/demo/cord-gui/src/main/java/org/onosproject/cord/gui/model/XosFunctionFactory.java
+++ b/apps/demo/cord-gui/src/main/java/org/onosproject/cord/gui/model/XosFunctionFactory.java
@@ -1,3 +1,18 @@
+/*
+ * 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.cord.gui.model;
 
 import com.fasterxml.jackson.databind.node.ArrayNode;
diff --git a/apps/pcep-api/pom.xml b/apps/pcep-api/pom.xml
index 80b4a43..dbe004e 100644
--- a/apps/pcep-api/pom.xml
+++ b/apps/pcep-api/pom.xml
@@ -1,12 +1,29 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <parent>
-    <groupId>org.onosproject</groupId>
-    <artifactId>onos-apps</artifactId>
-    <version>1.3.0-SNAPSHOT</version>
-  </parent>
-  <artifactId>onos-app-pcep-api</artifactId>
-  <packaging>bundle</packaging>
+<!--
+  ~ 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-apps</artifactId>
+        <version>1.3.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>onos-app-pcep-api</artifactId>
+    <packaging>bundle</packaging>
 
-  <description>PCEP protocol API</description>
+    <description>PCEP protocol API</description>
 </project>
\ No newline at end of file
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/DeviceConfiguration.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/DeviceConfiguration.java
index d82eb5e..e18ebfa 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/DeviceConfiguration.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/DeviceConfiguration.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting;
 
 import com.google.common.collect.Lists;
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfig.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfig.java
index 6ae0779..7f0803f 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfig.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfig.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting.config;
 
 import java.util.ArrayList;
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigException.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigException.java
index 9194221..0c0dac8 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigException.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigException.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting.config;
 
 import org.onosproject.net.DeviceId;
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigManager.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigManager.java
index 44e4f1c..0133f6f 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigManager.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigManager.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting.config;
 
 import java.io.File;
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigService.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigService.java
index 5685527..afbb0fc 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigService.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/NetworkConfigService.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting.config;
 
 import java.util.List;
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/PktLinkConfig.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/PktLinkConfig.java
index c66ac3c..d5a942c 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/PktLinkConfig.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/PktLinkConfig.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting.config;
 
 import java.util.List;
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/SegmentRouterConfig.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/SegmentRouterConfig.java
index 4775c77..dd5c4d6 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/SegmentRouterConfig.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/SegmentRouterConfig.java
@@ -1,3 +1,18 @@
+/*
+ * 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.segmentrouting.config;
 
 import java.io.IOException;
diff --git a/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java b/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
index 2469793..8b41bd5 100644
--- a/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
+++ b/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
@@ -1,3 +1,18 @@
+/*
+ * 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.messagingperf;
 
 import static com.google.common.base.Strings.isNullOrEmpty;
diff --git a/apps/vtn/pom.xml b/apps/vtn/pom.xml
index 56aa99d..0a70f7f 100644
--- a/apps/vtn/pom.xml
+++ b/apps/vtn/pom.xml
@@ -1,7 +1,23 @@
 <?xml version="1.0"?>
+<!--
+  ~ 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.
+  -->
 <project
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
-    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+        xmlns="http://maven.apache.org/POM/4.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.onosproject</groupId>
@@ -26,10 +42,6 @@
         </dependency>
         <dependency>
             <groupId>org.onosproject</groupId>
-            <artifactId>onos-api</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.onosproject</groupId>
             <artifactId>onos-incubator-api</artifactId>
         </dependency>
         <dependency>
diff --git a/apps/vtnrsc/pom.xml b/apps/vtnrsc/pom.xml
index ce4e2c8..510f1d5 100644
--- a/apps/vtnrsc/pom.xml
+++ b/apps/vtnrsc/pom.xml
@@ -1,4 +1,19 @@
 <?xml version="1.0"?>
+<!--
+  ~ 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.
+  -->
 <project
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
 	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/BindingHostId.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/BindingHostId.java
index da40387..b78b59d 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/BindingHostId.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/BindingHostId.java
@@ -1,3 +1,18 @@
+/*
+ * 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;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/Subnet.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/Subnet.java
index 1104d7e..cb9b11e 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/Subnet.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/Subnet.java
@@ -1,17 +1,17 @@
 /*
- *Copyright 2015 Open Networking Laboratory
+ * 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
+ * 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
+ *     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.
+ * 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;
 
diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/VirtualPortService.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/VirtualPortService.java
index 24ddb9f..05ebccf 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/VirtualPortService.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/VirtualPortService.java
@@ -1,100 +1,100 @@
-/*
- * Copyright 2015 Open Porting 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.virtualport;
-
-import java.util.Collection;
-
-import org.onosproject.net.DeviceId;
-import org.onosproject.vtnrsc.TenantId;
-import org.onosproject.vtnrsc.TenantNetworkId;
-import org.onosproject.vtnrsc.VirtualPort;
-import org.onosproject.vtnrsc.VirtualPortId;
-
-/**
- * Service for interacting with the inventory of virtualPort.
- */
-public interface VirtualPortService {
-    /**
-     * Returns if the virtualPort is existed.
-     *
-     * @param virtualPortId virtualPort identifier
-     * @return true or false if one with the given identifier is not existed.
-     */
-    boolean exists(VirtualPortId virtualPortId);
-
-    /**
-     * Returns the virtualPort with the identifier.
-     *
-     * @param virtualPortId virtualPort ID
-     * @return VirtualPort or null if one with the given ID is not know.
-     */
-    VirtualPort getPort(VirtualPortId virtualPortId);
-
-    /**
-     * Returns the collection of the currently known virtualPort.
-     * @return collection of VirtualPort.
-     */
-    Collection<VirtualPort> getPorts();
-
-    /**
-     * Returns the collection of the virtualPorts associated with the networkId.
-     *
-     * @param networkId  the network identifer
-     * @return collection of virtualPort.
-     */
-    Collection<VirtualPort> getPorts(TenantNetworkId networkId);
-
-    /**
-     * Returns the collection of the virtualPorts associated with the tenantId.
-     *
-     * @param tenantId   the tenant identifier
-     * @return collection of virtualPorts.
-     */
-    Collection<VirtualPort> getPorts(TenantId tenantId);
-
-    /**
-     * Returns the collection of the virtualPorts associated with the deviceId.
-     *
-     * @param deviceId   the device identifier
-     * @return collection of virtualPort.
-     */
-    Collection<VirtualPort> getPorts(DeviceId deviceId);
-
-    /**
-     * Creates virtualPorts by virtualPorts.
-     *
-     * @param virtualPorts the iterable collection of virtualPorts
-     * @return true if all given identifiers created successfully.
-     */
-    boolean createPorts(Iterable<VirtualPort> virtualPorts);
-
-    /**
-     * Updates virtualPorts by virtualPorts.
-     *
-     * @param virtualPorts the iterable  collection of virtualPorts
-     * @return true if all given identifiers updated successfully.
-     */
-    boolean updatePorts(Iterable<VirtualPort> virtualPorts);
-
-    /**
-     * Deletes virtualPortIds by virtualPortIds.
-     *
-     * @param virtualPortIds the iterable collection of virtualPort identifiers
-     * @return true or false if one with the given identifier to delete is
-     *         successfully.
-     */
-    boolean removePorts(Iterable<VirtualPortId> virtualPortIds);
-}
+/*
+ * 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.virtualport;
+
+import java.util.Collection;
+
+import org.onosproject.net.DeviceId;
+import org.onosproject.vtnrsc.TenantId;
+import org.onosproject.vtnrsc.TenantNetworkId;
+import org.onosproject.vtnrsc.VirtualPort;
+import org.onosproject.vtnrsc.VirtualPortId;
+
+/**
+ * Service for interacting with the inventory of virtualPort.
+ */
+public interface VirtualPortService {
+    /**
+     * Returns if the virtualPort is existed.
+     *
+     * @param virtualPortId virtualPort identifier
+     * @return true or false if one with the given identifier is not existed.
+     */
+    boolean exists(VirtualPortId virtualPortId);
+
+    /**
+     * Returns the virtualPort with the identifier.
+     *
+     * @param virtualPortId virtualPort ID
+     * @return VirtualPort or null if one with the given ID is not know.
+     */
+    VirtualPort getPort(VirtualPortId virtualPortId);
+
+    /**
+     * Returns the collection of the currently known virtualPort.
+     * @return collection of VirtualPort.
+     */
+    Collection<VirtualPort> getPorts();
+
+    /**
+     * Returns the collection of the virtualPorts associated with the networkId.
+     *
+     * @param networkId  the network identifer
+     * @return collection of virtualPort.
+     */
+    Collection<VirtualPort> getPorts(TenantNetworkId networkId);
+
+    /**
+     * Returns the collection of the virtualPorts associated with the tenantId.
+     *
+     * @param tenantId   the tenant identifier
+     * @return collection of virtualPorts.
+     */
+    Collection<VirtualPort> getPorts(TenantId tenantId);
+
+    /**
+     * Returns the collection of the virtualPorts associated with the deviceId.
+     *
+     * @param deviceId   the device identifier
+     * @return collection of virtualPort.
+     */
+    Collection<VirtualPort> getPorts(DeviceId deviceId);
+
+    /**
+     * Creates virtualPorts by virtualPorts.
+     *
+     * @param virtualPorts the iterable collection of virtualPorts
+     * @return true if all given identifiers created successfully.
+     */
+    boolean createPorts(Iterable<VirtualPort> virtualPorts);
+
+    /**
+     * Updates virtualPorts by virtualPorts.
+     *
+     * @param virtualPorts the iterable  collection of virtualPorts
+     * @return true if all given identifiers updated successfully.
+     */
+    boolean updatePorts(Iterable<VirtualPort> virtualPorts);
+
+    /**
+     * Deletes virtualPortIds by virtualPortIds.
+     *
+     * @param virtualPortIds the iterable collection of virtualPort identifiers
+     * @return true or false if one with the given identifier to delete is
+     *         successfully.
+     */
+    boolean removePorts(Iterable<VirtualPortId> virtualPortIds);
+}
diff --git a/apps/vtnweb/pom.xml b/apps/vtnweb/pom.xml
index 974d3bf..8257e8e 100644
--- a/apps/vtnweb/pom.xml
+++ b/apps/vtnweb/pom.xml
@@ -1,76 +1,88 @@
 <?xml version="1.0"?>
+<!--
+  ~ 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.
+  -->
 <project
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
-	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-	<modelVersion>4.0.0</modelVersion>
-	<parent>
-		<groupId>org.onosproject</groupId>
-		<artifactId>onos-apps</artifactId>
-		<version>1.3.0-SNAPSHOT</version>
-		<relativePath>../pom.xml</relativePath>
-	</parent>
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+        xmlns="http://maven.apache.org/POM/4.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-apps</artifactId>
+        <version>1.3.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
 
 
-	<artifactId>onos-app-vtnweb</artifactId>
-	<packaging>bundle</packaging>
-	<properties>
-		<onos.app.name>org.onosproject.vtnweb</onos.app.name>
-		<web.context>/onos/vtn</web.context>
-	</properties>
+    <artifactId>onos-app-vtnweb</artifactId>
+    <packaging>bundle</packaging>
+    <properties>
+        <onos.app.name>org.onosproject.vtnweb</onos.app.name>
+        <web.context>/onos/vtn</web.context>
+    </properties>
 
-	<dependencies>
-		<dependency>
-			<groupId>javax.ws.rs</groupId>
-			<artifactId>jsr311-api</artifactId>
-			<version>1.1.1</version>
-		</dependency>
-		<dependency>
-			<groupId>org.onosproject</groupId>
-			<artifactId>onos-api</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.onosproject</groupId>
-			<artifactId>onos-app-vtnrsc</artifactId>
-			<version>${project.version}</version>
-		</dependency>
-	</dependencies>
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.apache.felix</groupId>
-				<artifactId>maven-bundle-plugin</artifactId>
-				<extensions>true</extensions>
-				<configuration>
-					<instructions>
-						<_wab>src/main/webapp/</_wab>
-						<Bundle-SymbolicName>
-							${project.groupId}.${project.artifactId}
-						</Bundle-SymbolicName>
-						<Import-Package>
-							org.slf4j,
-							org.osgi.framework,
-							javax.ws.rs,
-							javax.ws.rs.core,
-							com.sun.jersey.api.core,
-							com.sun.jersey.spi.container.servlet,
-							com.sun.jersey.server.impl.container.servlet,
-							com.fasterxml.jackson.databind,
-							com.fasterxml.jackson.databind.node,
-							com.fasterxml.jackson.core,
-							org.apache.karaf.shell.commands,
-							org.apache.commons.lang.math.*,
-							com.google.common.*,
-							org.onlab.packet.*,
-							org.onlab.rest.*,
-							org.onosproject.*,
-							org.onlab.util.*,
-							org.jboss.netty.util.*
-						</Import-Package>
-						<Web-ContextPath>${web.context}</Web-ContextPath>
-					</instructions>
-				</configuration>
-			</plugin>
-		</plugins>
-	</build>
+    <dependencies>
+        <dependency>
+            <groupId>javax.ws.rs</groupId>
+            <artifactId>jsr311-api</artifactId>
+            <version>1.1.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-app-vtnrsc</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-bundle-plugin</artifactId>
+                <extensions>true</extensions>
+                <configuration>
+                    <instructions>
+                        <_wab>src/main/webapp/</_wab>
+                        <Bundle-SymbolicName>
+                            ${project.groupId}.${project.artifactId}
+                        </Bundle-SymbolicName>
+                        <Import-Package>
+                            org.slf4j,
+                            org.osgi.framework,
+                            javax.ws.rs,
+                            javax.ws.rs.core,
+                            com.sun.jersey.api.core,
+                            com.sun.jersey.spi.container.servlet,
+                            com.sun.jersey.server.impl.container.servlet,
+                            com.fasterxml.jackson.databind,
+                            com.fasterxml.jackson.databind.node,
+                            com.fasterxml.jackson.core,
+                            org.apache.karaf.shell.commands,
+                            org.apache.commons.lang.math.*,
+                            com.google.common.*,
+                            org.onlab.packet.*,
+                            org.onlab.rest.*,
+                            org.onosproject.*,
+                            org.onlab.util.*,
+                            org.jboss.netty.util.*
+                        </Import-Package>
+                        <Web-ContextPath>${web.context}</Web-ContextPath>
+                    </instructions>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
 </project>
\ No newline at end of file