diff --git a/apps/routing-api/src/main/java/org/onosproject/routing/IntentRequestListener.java b/apps/routing-api/src/main/java/org/onosproject/routing/IntentRequestListener.java
new file mode 100644
index 0000000..2d1bb31
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+++ b/apps/routing-api/src/main/java/org/onosproject/routing/IntentRequestListener.java
@@ -0,0 +1,76 @@
+/*
+ * 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.routing;
+
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
+import org.onlab.packet.MacAddress;
+import org.onosproject.net.ConnectPoint;
+
+/**
+ * An interface to process intent requests.
+ */
+public interface IntentRequestListener {
+
+    /**
+     * Sets up connectivity for packet from Internet to a host in local
+     * SDN network.
+     *
+     * @param dstIpAddress IP address of destination host in local SDN network
+     */
+    void setUpConnectivityInternetToHost(IpAddress dstIpAddress);
+
+    /**
+     * Sets up the connectivity for two hosts in local SDN network.
+     *
+     * @param dstIpAddress the destination IP address
+     * @param srcIpAddress the source IP address
+     * @param srcMacAddress the source MAC address
+     * @param srcConnectPoint the connectPoint of the source host
+     */
+    void setUpConnectivityHostToHost(IpAddress dstIpAddress,
+                                     IpAddress srcIpAddress,
+                                     MacAddress srcMacAddress,
+                                     ConnectPoint srcConnectPoint);
+
+    /**
+     * Adds one new ingress connect point into ingress points of an existing
+     * intent and resubmits the new intent.
+     * <p>
+     * If there is already an intent for an IP prefix in the system, we do not
+     * need to create a new one, we only need to update this existing intent by
+     * adding more ingress points.
+     * </p>
+     *
+     * @param ipPrefix the IP prefix used to search the existing
+     *        MultiPointToSinglePointIntent
+     * @param ingressConnectPoint the ingress connect point to be added into
+     *        the exiting intent
+     */
+    void updateExistingMp2pIntent(IpPrefix ipPrefix,
+                                  ConnectPoint ingressConnectPoint);
+
+    /**
+     * Checks whether there is a MultiPointToSinglePointIntent in memory for a
+     * given IP prefix.
+     *
+     * @param ipPrefix the IP prefix used to search the existing
+     *        MultiPointToSinglePointIntent
+     * @return true if there is a MultiPointToSinglePointIntent, otherwise false
+     */
+    boolean mp2pIntentExists(IpPrefix ipPrefix);
+
+}