diff --git a/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java b/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java
index 3480366..064745d 100755
--- a/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java
+++ b/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java
@@ -29,6 +29,7 @@
 import org.onosproject.net.Device;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
+import org.onosproject.net.PortNumber;
 import org.onosproject.net.device.DefaultDeviceDescription;
 import org.onosproject.net.device.DeviceDescription;
 import org.onosproject.net.device.DeviceProvider;
@@ -122,4 +123,9 @@
         // TODO Auto-generated method stub
         return true;
     }
+
+    @Override
+    public void changePortState(DeviceId deviceId, PortNumber portNumber,
+                                boolean enable) {
+    }
 }