diff --git a/core/api/src/main/java/org/onosproject/net/group/GroupService.java b/core/api/src/main/java/org/onosproject/net/group/GroupService.java
index d56518a..369cc37 100644
--- a/core/api/src/main/java/org/onosproject/net/group/GroupService.java
+++ b/core/api/src/main/java/org/onosproject/net/group/GroupService.java
@@ -107,6 +107,12 @@
                                 ApplicationId appId);
 
     /**
+     * Purges all the group entries on the specified device.
+     * @param deviceId device identifier
+     */
+    void purgeGroupEntries(DeviceId deviceId);
+
+    /**
      * Deletes a group associated to an application cookie.
      * GROUP_DELETED or GROUP_DELETE_FAILED notifications would be
      * provided along with cookie depending on the result of the