--- /dev/null
+/*
+ * Copyright IBM Corporation, 2013. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.hosttracker;
+
+import java.io.Serializable;
+
+/*
+ * Marker interface used by the key classes for their implementation
+ * @author Deepak Udapudi
+ */
+
+public interface IHostId extends Serializable {
+
+}