diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java
index f76007f..7ac6805 100644
--- a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/FloatingIpEvent.java
@@ -34,7 +34,15 @@
         /**
          * Signifies that Floating IP has been deleted.
          */
-        FLOATINGIP_DELETE
+        FLOATINGIP_DELETE,
+        /**
+         * Signifies that Floating IP has been bound.
+         */
+        FLOATINGIP_BIND,
+        /**
+         * Signifies that Floating IP has been unbound.
+         */
+        FLOATINGIP_UNBIND
     }
 
     /**