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S12700 V200R010C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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Configuring a QinQ Sub-interface

Configuring a QinQ Sub-interface


When a VPN network connects to an ISP network through a sub-interface, the sub-interface needs to terminate VLAN tags. A QinQ termination sub-interface can remove double VLAN tags carried by packets sent from CEs to PEs.


  1. On the PE device, run:


    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:


    Return to the system view.

  5. Run:

    interface interface-type interface-number.subinterface-number

    The view of the sub-interface connecting the PE to the CE is displayed.


    If the PW-side interface is a Layer 3 interface switched by the undo portswitch command, the AC-side interface cannot be a Layer 3 interface or subinterface belonging to a Layer 3 interface; otherwise, traffic forwarding is abnormal.

  6. Run:

    qinq termination pe-vid pe-vid ce-vid ce-vid1 [ to ce-vid2 ]

    QinQ termination is configured on the sub-interface.

    After a VLANIF interface is configured, the corresponding VLAN cannot be configured as an outer VLAN for the sub-interface for QinQ VLAN tag termination.

Updated: 2019-08-21

Document ID: EDOC1000142081

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