added VLANID construct

Change-Id: Ia58abb268d52639215f289052bbf8802992f98a6
diff --git a/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java b/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java
index 2acdc75..ea68b53 100644
--- a/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java
+++ b/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java
@@ -8,17 +8,18 @@
 import org.onlab.onos.net.HostLocation;
 import org.onlab.packet.IPAddress;
 import org.onlab.packet.MACAddress;
+import org.onlab.packet.VLANID;
 
 import com.google.common.collect.ImmutableSet;
 
 public class DefaultHostDescription implements HostDescription {
 
     private final MACAddress mac;
-    private final short vlan;
+    private final VLANID vlan;
     private final HostLocation location;
     private final Set<IPAddress> ips;
 
-    public DefaultHostDescription(MACAddress mac, short vlan,
+    public DefaultHostDescription(MACAddress mac, VLANID vlan,
             HostLocation loc, Set<IPAddress> ips) {
         this.mac = mac;
         this.vlan = vlan;
@@ -32,7 +33,7 @@
     }
 
     @Override
-    public short vlan() {
+    public VLANID vlan() {
         return vlan;
     }