Configuring 2-to-1 QinQ Mapping

Procedure

1. Run system-view

   The system view is displayed.

2. Run interface interface-type interface-number

   The interface view is displayed.

3. Run port link-type { hybrid | trunk }

   The port link-type is set.

4. Run quit

   The system view is displayed.

5. Run interface interface-type interface-number.subinterface-number

   The view of the CE-side Ethernet or Eth-Trunk sub-interface of the PE is displayed.

6. Run qinq mapping pe-vid vlan-id1 ce-vid vlan-id2 [ to vlan-id3 ] map-vlan vid vlan-id4

   The sub-interface is configured to map the outer VLAN tag of double-tagged packets to a specified VLAN tag.

   The original outer VLAN ID of double-tagged packets specified in the command must be different from outer VLAN IDs specified on all the other sub-interfaces.

   

   • QinQ mapping cannot be used with stacking, QinQ termination, or Dot1q termination commands on the same sub-interface.

   • If the PW-side routing interface is a Layer 3 interface switched by the undo portswitch command, the AC-side interface cannot be a Layer 3 routing interface or its sub-interface belonging to a Layer 3 interface; otherwise, traffic fails to be forwarded. This rule applies to S5710-EI, S5720-EI, S6720-EI, and S6720S-EI.