diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnConfig.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnConfig.java
new file mode 100644
index 0000000..1f98e55
--- /dev/null
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnConfig.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.vtn.util;
+
+import java.util.Set;
+
+import org.onlab.packet.IpAddress;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.behaviour.BridgeConfig;
+import org.onosproject.net.behaviour.BridgeName;
+import org.onosproject.net.behaviour.DefaultTunnelDescription;
+import org.onosproject.net.behaviour.IpTunnelEndPoint;
+import org.onosproject.net.behaviour.TunnelConfig;
+import org.onosproject.net.behaviour.TunnelDescription;
+import org.onosproject.net.behaviour.TunnelEndPoint;
+import org.onosproject.net.driver.DriverHandler;
+
+/**
+ * Applies configuration to the device.
+ */
+public final class VtnConfig {
+
+    private static final String DEFAULT_BRIDGE_NAME = "br-int";
+
+    /**
+     * Constructs a vtn config object. Utility classes should not have a
+     * public or default constructor, otherwise IDE will compile unsuccessfully. This
+     * class should not be instantiated.
+     */
+    private VtnConfig() {
+    }
+
+    /**
+     * Creates or update bridge in the controller device.
+     *
+     * @param handler DriverHandler
+     * @param dpid datapath id
+     * @param exPortName external port name
+     */
+    public static void applyBridgeConfig(DriverHandler handler, String dpid, String exPortName) {
+        BridgeConfig bridgeConfig = handler.behaviour(BridgeConfig.class);
+        bridgeConfig.addBridge(BridgeName.bridgeName(DEFAULT_BRIDGE_NAME), dpid, exPortName);
+    }
+
+    /**
+     * Creates or update tunnel in the controller device.
+     *
+     * @param handler DriverHandler
+     * @param srcIp the ipAddress of the local controller device
+     * @param dstIp the ipAddress of the remote controller device
+     */
+    public static void applyTunnelConfig(DriverHandler handler, IpAddress srcIp,
+                                  IpAddress dstIp) {
+        TunnelConfig tunnelConfig = handler.behaviour(TunnelConfig.class);
+        TunnelEndPoint tunnelAsSrc = IpTunnelEndPoint.ipTunnelPoint(srcIp);
+        TunnelEndPoint tunnelAsDst = IpTunnelEndPoint.ipTunnelPoint(dstIp);
+        TunnelDescription tunnel = new DefaultTunnelDescription(
+                                                                tunnelAsSrc,
+                                                                tunnelAsDst,
+                                                                TunnelDescription.Type.VXLAN,
+                                                                null);
+        tunnelConfig.createTunnel(tunnel);
+    }
+
+    /**
+     * Creates or update tunnel in the controller device.
+     *
+     * @param handler DriverHandler
+     * @param srcIp the ipAddress of the local controller device
+     * @param dstIp the ipAddress of the remote controller device
+     */
+    public static void removeTunnelConfig(DriverHandler handler, IpAddress srcIp,
+                                   IpAddress dstIp) {
+        TunnelConfig tunnelConfig = handler.behaviour(TunnelConfig.class);
+        TunnelEndPoint tunnelAsSrc = IpTunnelEndPoint.ipTunnelPoint(srcIp);
+        TunnelEndPoint tunnelAsDst = IpTunnelEndPoint.ipTunnelPoint(dstIp);
+        TunnelDescription tunnel = new DefaultTunnelDescription(
+                                                                tunnelAsSrc,
+                                                                tunnelAsDst,
+                                                                TunnelDescription.Type.VXLAN,
+                                                                null);
+        tunnelConfig.removeTunnel(tunnel);
+    }
+
+    /**
+     * Gets ports in the controller device.
+     *
+     * @param handler DriverHandler
+     */
+    public static Set<PortNumber> getPortNumbers(DriverHandler handler) {
+        BridgeConfig bridgeConfig = handler.behaviour(BridgeConfig.class);
+        return bridgeConfig.getPortNumbers();
+    }
+
+}