diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/L3ForwardService.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/L3ForwardService.java
new file mode 100644
index 0000000..718253a
--- /dev/null
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/L3ForwardService.java
@@ -0,0 +1,47 @@
+/*
+ * 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.table;
+
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.flowobjective.Objective;
+import org.onosproject.vtnrsc.SegmentationId;
+
+/**
+ * L3ForwardService interface provide the rules in L3Forward table which is Table(30).
+ */
+public interface L3ForwardService {
+
+    /**
+     * Assemble the L3Forward table rules.
+     * Match: ipv4 type, vnid and destination ip.
+     * Action: set eth_src, set eth_dst, set vnid and goto L2Forward Table(50).
+     *
+     * @param deviceId Device Id
+     * @param l3Vni the vni of L3 network
+     * @param dstVmIP destination vm ip
+     * @param dstVni the vni of the destination network (l2vni)
+     * @param dstVmGwMac destination VM gateway mac
+     * @param dstVmMac destination VM mac
+     * @param type the operation type of the flow rules
+     */
+    void programRouteRules(DeviceId deviceId, SegmentationId l3Vni,
+                           IpAddress dstVmIP, SegmentationId dstVni,
+                           MacAddress dstVmGwMac, MacAddress dstVmMac,
+                           Objective.Operation type);
+
+}