diff --git a/accton/accton_util.py b/accton/accton_util.py
index 46e04c5..cf1634c 100755
--- a/accton/accton_util.py
+++ b/accton/accton_util.py
@@ -626,6 +626,36 @@
     logging.info("Add allow all vlan on port %d " %(in_port))
     ctrl.message_send(request)
 
+def add_one_vlan_table_flow_translation(ctrl, of_port, vlan_id=1, new_vlan_id=-1, vrf=0, flag=VLAN_TABLE_FLAG_ONLY_BOTH, send_barrier=False):
+    # Install a flow for VLAN translation
+    # in VLAN table.
+    # table 10: vlan
+    # goto to table 20
+    if (flag == VLAN_TABLE_FLAG_ONLY_TAG) or (flag == VLAN_TABLE_FLAG_ONLY_BOTH) or (flag == 4):
+        match = ofp.match()
+        match.oxm_list.append(ofp.oxm.in_port(of_port))
+        match.oxm_list.append(ofp.oxm.vlan_vid_masked(0x1000+vlan_id,0x1fff))
+
+        actions=[]
+        if vrf!=0:
+            actions.append(ofp.action.set_field(ofp.oxm.exp2ByteValue(exp_type=1, value=vrf)))
+        if new_vlan_id != -1:
+            actions.append(ofp.action.set_field(ofp.oxm.vlan_vid(0x1000+new_vlan_id)))
+
+        request = ofp.message.flow_add(
+            table_id=10,
+            cookie=42,
+            match=match,
+            instructions=[
+                ofp.instruction.apply_actions(
+                     actions=actions
+                ),
+                ofp.instruction.goto_table(20)
+            ],
+            priority=0)
+        logging.info("Add vlan %d tagged packets on port %d and go to table 20" %( vlan_id, of_port))
+        ctrl.message_send(request)
+
 def add_one_vlan_table_flow(ctrl, of_port, vlan_id=1, vrf=0, flag=VLAN_TABLE_FLAG_ONLY_BOTH, send_barrier=False):
     # table 10: vlan
     # goto to table 20