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 06e592c..8bf4ceb 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
@@ -28,4 +28,11 @@
     public static final String DEFAULT_TUNNEL = "vxlan";
     public static final String PATCH_INTG_BRIDGE = "patch-intg";
     public static final String PATCH_ROUT_BRIDGE = "patch-rout";
+    public static final String GATEWAY = "GATEWAY";
+    public static final String HOST_NAME = "hostname";
+    public static final String TYPE = "type";
+    public static final String MANAGEMENT_IP = "managementIp";
+    public static final String DATA_IP = "dataIp";
+    public static final String VLAN_INTF_NAME = "vlanPort";
+    public static final String UPLINK_PORT = "uplinkPort";
 }
\ No newline at end of file