diff --git a/core/api/src/main/java/org/onlab/onos/net/Port.java b/core/api/src/main/java/org/onlab/onos/net/Port.java
index 2ebbd15..e2da4a1 100644
--- a/core/api/src/main/java/org/onlab/onos/net/Port.java
+++ b/core/api/src/main/java/org/onlab/onos/net/Port.java
@@ -4,7 +4,7 @@
 /**
  * Abstraction of a network port.
  */
-public interface Port {
+public interface Port extends Annotated {
 
     /**
      * Returns the port number.