diff --git a/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/device/IpDeviceProviderService.java b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/device/IpDeviceProviderService.java
new file mode 100644
index 0000000..f84b8b7
--- /dev/null
+++ b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/device/IpDeviceProviderService.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2014-2015 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.iptopology.api.device;
+
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderService;
+
+import java.util.List;
+
+/**
+ * Service through which ip device providers can inject ip device information into
+ * the core.
+ */
+public interface IpDeviceProviderService extends ProviderService<IpDeviceProvider> {
+
+    /**
+     * Signals the core that an ip device is added or updated with IP topology information.
+     *
+     * @param deviceId device identifier
+     * @param deviceDescription information about network ip device
+     */
+    void addOrUpdateIpDevice(DeviceId deviceId, IpDeviceDescription deviceDescription);
+
+    /**
+     * Signals the core that an ip device is removed.
+     *
+     * @param deviceId identity of the ip device to be removed
+     */
+    void removeIpDevice(DeviceId deviceId);
+
+    /**
+     * Sends information about all interfaces of a device. It is up to the core to
+     * determine what has changed.
+     *
+     * @param deviceId         identity of the ip device
+     * @param interfaceDescriptions list of device interfaces
+     */
+    void updateInterfaces(DeviceId deviceId, List<InterfaceDescription> interfaceDescriptions);
+
+    /**
+     * signals interfaces of a device is deleted.
+     *
+     * @param deviceId         identity of the ip device
+     * @param interfaceDescriptions list of device interfaces
+     */
+    void removeInterfaces(DeviceId deviceId, List<InterfaceDescription> interfaceDescriptions);
+
+    /**
+     * Sends information about all ip prefix of a device. It is up to the core to
+     * determine what has changed.
+     *
+     * @param deviceId         identity of the ip device
+     * @param prefixDescriptions list of device ip prefixes
+     */
+    void updatePrefixes(DeviceId deviceId, List<PrefixDescription> prefixDescriptions);
+
+    /**
+     * signals ip prefix of a device is deleted.
+     *
+     * @param deviceId         identity of the ip device
+     * @param prefixDescriptions list of device ip prefixes
+     */
+    void removePrefixes(DeviceId deviceId, List<PrefixDescription> prefixDescriptions);
+
+}