diff --git a/apps/openstacknode/api/src/main/java/org/onosproject/openstacknode/api/Constants.java b/apps/openstacknode/api/src/main/java/org/onosproject/openstacknode/api/Constants.java
index c10820e..b7ca1f5 100644
--- a/apps/openstacknode/api/src/main/java/org/onosproject/openstacknode/api/Constants.java
+++ b/apps/openstacknode/api/src/main/java/org/onosproject/openstacknode/api/Constants.java
@@ -24,6 +24,7 @@
     }
 
     public static final String INTEGRATION_BRIDGE = "br-int";
+    public static final String TUNNEL_BRIDGE = "br-tun";
     public static final String ROUTER_BRIDGE = "br-router";
     public static final String DEFAULT_TUNNEL = "vxlan";
     public static final String PATCH_INTG_BRIDGE = "patch-intg";