diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPortId.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPortId.java
index 0969ce1..3038bdf 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPortId.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPortId.java
@@ -1,70 +1,70 @@
-/*
- * 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;
-
-import java.util.Objects;
-
-/**
- * Immutable representation of a virtual port identifier.
- */
-public final class VirtualPortId {
-    private final String portId;
-    // Public construction is prohibited
-    private VirtualPortId(String virtualPortId) {
-        checkNotNull(virtualPortId, "VirtualPortId cannot be null");
-        this.portId = virtualPortId;
-    }
-
-    public String portId() {
-        return portId;
-    }
-
-    /**
-     * Creates a virtualPort id using the supplied portId.
-     *
-     * @param portId virtualport identifier
-     * @return VirtualPortId
-     */
-    public static VirtualPortId portId(String portId) {
-        return new VirtualPortId(portId);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(portId);
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj instanceof VirtualPortId) {
-            final VirtualPortId that = (VirtualPortId) obj;
-            return this.getClass() == that.getClass()
-                    && Objects.equals(this.portId, that.portId);
-        }
-        return false;
-    }
-
-    @Override
-    public String toString() {
-        return portId;
-    }
-
-}
+/*
+ * 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;
+
+import java.util.Objects;
+
+/**
+ * Immutable representation of a virtual port identifier.
+ */
+public final class VirtualPortId {
+    private final String portId;
+    // Public construction is prohibited
+    private VirtualPortId(String virtualPortId) {
+        checkNotNull(virtualPortId, "VirtualPortId cannot be null");
+        this.portId = virtualPortId;
+    }
+
+    public String portId() {
+        return portId;
+    }
+
+    /**
+     * Creates a virtualPort id using the supplied portId.
+     *
+     * @param portId virtualport identifier
+     * @return VirtualPortId
+     */
+    public static VirtualPortId portId(String portId) {
+        return new VirtualPortId(portId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(portId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof VirtualPortId) {
+            final VirtualPortId that = (VirtualPortId) obj;
+            return this.getClass() == that.getClass()
+                    && Objects.equals(this.portId, that.portId);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return portId;
+    }
+
+}