diff --git a/apps/evpnopenflow/src/main/java/org/onosproject/evpnopenflow/manager/EvpnService.java b/apps/evpnopenflow/src/main/java/org/onosproject/evpnopenflow/manager/EvpnService.java
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+++ b/apps/evpnopenflow/src/main/java/org/onosproject/evpnopenflow/manager/EvpnService.java
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+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.evpnopenflow.manager;
+
+import org.onosproject.evpnopenflow.rsc.VpnPort;
+import org.onosproject.incubator.net.routing.EvpnRoute;
+import org.onosproject.net.Host;
+
+/**
+ * Service for interacting with the route and host events.
+ */
+public interface EvpnService {
+    /**
+     * Transfer remote route to private route and set mpls flows out when
+     * BgpRoute update.
+     *
+     * @param route evpn route
+     */
+    void onBgpEvpnRouteUpdate(EvpnRoute route);
+
+    /**
+     * Transfer remote route to private route and delete mpls flows out when
+     * BgpRoute delete.
+     *
+     * @param route evpn route
+     */
+    void onBgpEvpnRouteDelete(EvpnRoute route);
+
+    /**
+     * Get VPN info from EVPN app store and create route, set flows when host
+     * detected.
+     *
+     * @param host host information
+     */
+    void onHostDetected(Host host);
+
+    /**
+     * Get VPN info from EVPN app store and delete route, set flows when
+     * host
+     * vanished.
+     *
+     * @param host host information
+     */
+    void onHostVanished(Host host);
+
+    /**
+     * Get VPN info from EVPN app store and create route, set flows when
+     * host
+     * detected.
+     *
+     * @param vpnPort vpnPort information
+     */
+    void onVpnPortSet(VpnPort vpnPort);
+
+    /**
+     * Get VPN info from EVPN app store and delete route, set flows when host
+     * vanished.
+     *
+     * @param vpnPort vpnPort information
+     */
+    void onVpnPortDelete(VpnPort vpnPort);
+}