diff --git a/src/main/java/net/floodlightcontroller/topology/ITopologyService.java b/src/main/java/net/floodlightcontroller/topology/ITopologyService.java
index ebc3a7618a66a5b6e0cb06c15a170f6f5164803e..eba4ada8db0fe8c1f2cf08f764535c64bbd8b29c 100644
--- a/src/main/java/net/floodlightcontroller/topology/ITopologyService.java
+++ b/src/main/java/net/floodlightcontroller/topology/ITopologyService.java
@@ -43,6 +43,15 @@ public interface ITopologyService extends IFloodlightService  {
 
     public boolean isAllowed(long sw, short portId);
 
+    /**
+     * If the dst is not allowed by the higher-level topology, this method provides
+     * the topologically equivalent broadcast port.  
+     * @param src
+     * @param dst
+     * @return the allowed broadcast port
+     */
+    public NodePortTuple getAllowedOutgoingBroadcastPort(NodePortTuple src, NodePortTuple dst);
+    
     public boolean isIncomingBroadcastAllowed(long sw, short portId);
 
     public boolean isInSameBroadcastDomain(long s1, short p1, long s2, short p2);
diff --git a/src/main/java/net/floodlightcontroller/topology/TopologyManager.java b/src/main/java/net/floodlightcontroller/topology/TopologyManager.java
index cd0392a3d954fe936884ce6128a4d9cad61951fe..e36ef94115dd5dc3c102938aff5d5f26af1d1c71 100644
--- a/src/main/java/net/floodlightcontroller/topology/TopologyManager.java
+++ b/src/main/java/net/floodlightcontroller/topology/TopologyManager.java
@@ -370,6 +370,11 @@ IRoutingService, ILinkDiscoveryListener {
         return currentInstance.isAllowed(sw, portId);
     }
 
+    @Override
+    public NodePortTuple getAllowedOutgoingBroadcastPort(NodePortTuple src, NodePortTuple dst) {
+    	return null;
+    }
+    
     @Override
     public boolean isIncomingBroadcastAllowed(long sw, short portId) {
         return currentInstance.isIncomingBroadcastAllowedOnSwitchPort(sw, portId);