diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java
index 3d64734..7886224 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java
@@ -1,156 +1,156 @@
-/*
- * 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 java.util.Collection;
-import java.util.Set;
-
-import org.onlab.packet.MacAddress;
-import org.onosproject.net.DeviceId;
-
-/**
- * Representation of the VirtualPort.
- */
-public interface VirtualPort {
-    /**
-     * Coarse classification of the type of the virtual port.
-     */
-    public enum State {
-        /**
-         * Signifies that a virtualPort is currently active,This state mean that
-         * this virtualPort is available.
-         */
-        ACTIVE,
-        /**
-         * Signifies that a virtualPort is currently unavailable.
-         */
-        DOWN
-    }
-
-    /**
-     * Returns the virtualPort identifier.
-     *
-     * @return virtualPort identifier
-     */
-    VirtualPortId portId();
-
-    /**
-     * Returns the network identifier.
-     *
-     * @return tenantNetwork identifier
-     */
-    TenantNetworkId networkId();
-
-    /**
-     * Returns the symbolic name for the virtualPort.
-     *
-     * @return virtualPort name
-     */
-    String name();
-
-    /**
-     * Returns the administrative status of the port,which is up(true) or
-     * down(false).
-     *
-     * @return true if the administrative status of the port is up
-     */
-    boolean adminStateUp();
-
-    /**
-     * Returns the state.
-     *
-     * @return state
-     */
-    State state();
-
-    /**
-     * Returns the MAC address.
-     *
-     * @return MAC Address
-     */
-    MacAddress macAddress();
-
-    /**
-     * Returns the port tenantId.
-     *
-     * @return port tenantId
-     */
-    TenantId tenantId();
-
-    /**
-     * Returns the device identifier.
-     *
-     * @return deviceId
-     */
-    DeviceId deviceId();
-
-    /**
-     * Returns the identifier of the entity that uses this port.
-     *
-     * @return deviceOwner
-     */
-    String deviceOwner();
-
-    /**
-     * Returns the virtualPort allowedAddressPairs.
-     *
-     * @return virtualPort allowedAddressPairs
-     */
-    Collection<AllowedAddressPair> allowedAddressPairs();
-
-    /**
-     * Returns set of IP addresses for the port, include the IP addresses and subnet
-     * identity.
-     *
-     * @return FixedIps Set of fixedIp
-     */
-    Set<FixedIp> fixedIps();
-
-    /**
-     * Returns the virtualPort bindinghostId.
-     *
-     * @return virtualPort bindinghostId
-     */
-    BindingHostId bindingHostId();
-
-    /**
-     * Returns the virtualPort bindingVnicType.
-     *
-     * @return virtualPort bindingVnicType
-     */
-    String bindingVnicType();
-
-    /**
-     * Returns the virtualPort bindingVifType.
-     *
-     * @return virtualPort bindingVifType
-     */
-    String bindingVifType();
-
-    /**
-     * Returns the virtualPort bindingvifDetail.
-     *
-     * @return virtualPort bindingvifDetail
-     */
-    String bindingVifDetails();
-
-    /**
-     * Returns the security groups.
-     *
-     * @return port security groups
-     */
-    Iterable<SecurityGroup> securityGroups();
-}
+/*
+ * 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 java.util.Collection;
+import java.util.Set;
+
+import org.onlab.packet.MacAddress;
+import org.onosproject.net.DeviceId;
+
+/**
+ * Representation of the VirtualPort.
+ */
+public interface VirtualPort {
+    /**
+     * Coarse classification of the type of the virtual port.
+     */
+    public enum State {
+        /**
+         * Signifies that a virtualPort is currently active,This state mean that
+         * this virtualPort is available.
+         */
+        ACTIVE,
+        /**
+         * Signifies that a virtualPort is currently unavailable.
+         */
+        DOWN
+    }
+
+    /**
+     * Returns the virtualPort identifier.
+     *
+     * @return virtualPort identifier
+     */
+    VirtualPortId portId();
+
+    /**
+     * Returns the network identifier.
+     *
+     * @return tenantNetwork identifier
+     */
+    TenantNetworkId networkId();
+
+    /**
+     * Returns the symbolic name for the virtualPort.
+     *
+     * @return virtualPort name
+     */
+    String name();
+
+    /**
+     * Returns the administrative status of the port,which is up(true) or
+     * down(false).
+     *
+     * @return true if the administrative status of the port is up
+     */
+    boolean adminStateUp();
+
+    /**
+     * Returns the state.
+     *
+     * @return state
+     */
+    State state();
+
+    /**
+     * Returns the MAC address.
+     *
+     * @return MAC Address
+     */
+    MacAddress macAddress();
+
+    /**
+     * Returns the port tenantId.
+     *
+     * @return port tenantId
+     */
+    TenantId tenantId();
+
+    /**
+     * Returns the device identifier.
+     *
+     * @return deviceId
+     */
+    DeviceId deviceId();
+
+    /**
+     * Returns the identifier of the entity that uses this port.
+     *
+     * @return deviceOwner
+     */
+    String deviceOwner();
+
+    /**
+     * Returns the virtualPort allowedAddressPairs.
+     *
+     * @return virtualPort allowedAddressPairs
+     */
+    Collection<AllowedAddressPair> allowedAddressPairs();
+
+    /**
+     * Returns set of IP addresses for the port, include the IP addresses and subnet
+     * identity.
+     *
+     * @return FixedIps Set of fixedIp
+     */
+    Set<FixedIp> fixedIps();
+
+    /**
+     * Returns the virtualPort bindinghostId.
+     *
+     * @return virtualPort bindinghostId
+     */
+    BindingHostId bindingHostId();
+
+    /**
+     * Returns the virtualPort bindingVnicType.
+     *
+     * @return virtualPort bindingVnicType
+     */
+    String bindingVnicType();
+
+    /**
+     * Returns the virtualPort bindingVifType.
+     *
+     * @return virtualPort bindingVifType
+     */
+    String bindingVifType();
+
+    /**
+     * Returns the virtualPort bindingvifDetail.
+     *
+     * @return virtualPort bindingvifDetail
+     */
+    String bindingVifDetails();
+
+    /**
+     * Returns the security groups.
+     *
+     * @return port security groups
+     */
+    Iterable<SecurityGroup> securityGroups();
+}