diff --git a/providers/openflow/link/src/main/java/org/onlab/onos/provider/of/link/impl/LinkDiscovery.java b/providers/openflow/link/src/main/java/org/onlab/onos/provider/of/link/impl/LinkDiscovery.java
index 1c98ad9..132b185 100644
--- a/providers/openflow/link/src/main/java/org/onlab/onos/provider/of/link/impl/LinkDiscovery.java
+++ b/providers/openflow/link/src/main/java/org/onlab/onos/provider/of/link/impl/LinkDiscovery.java
@@ -86,7 +86,7 @@
     private final boolean useBDDP;
     private final OpenFlowController ctrl;
     private final LinkProviderService linkProvider;
-    private final Map<Integer, OFPortDesc> ports;
+    protected final Map<Integer, OFPortDesc> ports;
     private Timeout timeout;
 
     /**