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AR500, AR510, and AR530 V200R007 CLI-based Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring transparent bridge, MAC table, link aggregation, VLANs, STP/RSTP/MSTP, and so on.The document provides the configuration procedures and configuration examples to illustrate the service configuration methods and application scenario.
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Configuring VLAN ID-based VLAN Mapping

Configuring VLAN ID-based VLAN Mapping

When packets are sent from one LAN to another, if VLAN ID plans are different, their VLAN IDs need to be changed. You can configure VLAN ID-based VLAN mapping on the LAN edge device to map VLAN IDs in received packets. Then the LAN edge device forwards packets based on mapped VLAN IDs.


  • Configure VLAN ID-based VLAN mapping on a sub-interface.
    1. Run:


      The system view is displayed.

    2. Run:

      bridge bridge-id

      A bridge group is created and the bridge group view is displayed.

    3. Run:


      Exit from the bridge group view.

    4. Run:

      interface { ethernet | gigabitethernet } interface-number.subinterface-number

      The Ethernet sub-interface view is displayed.


      Sub-interfaces can only be created on Layer 3 Ethernet interfaces. If an interface works in Layer 2 mode and supports switching between Layer 2 and Layer 3 modes, run the undo portswitch command to switch the interface in Layer 3 mode before creating a sub-interface on the interface.

    5. Run:

      bridge bridge-id

      The Ethernet sub-interface is added to the bridge group.

    6. Run:

      bridge vlan-transmit enable

      The Ethernet sub-interface is enabled to transparently transmit VLAN IDs.

    7. Run:

      vlan allow-pass { vid vlan-id1 [ to vlan-id2 ] | default }

      The VLANs allowed by the Ethernet sub-interface are configured.


      VLANs allowed by all sub-interfaces of a main interface cannot overlap.

      The vlan allow-pass default command can be executed only on a sub-interface among all sub-interfaces of each main interface. Packets are forwarded through the default sub-interface when the packets do not match other QinQ or VLAN mapping entries on a sub-interface.

    8. Run:

      vlan mapping vid vlan-id1 map-vlan vlan-id2

      VLAN ID-based VLAN mapping is configured.


      The sub-interface has been added to a bridge group and the VLANs allowed by the sub-interface has been configured using the vlan allow-pass command.

      The VLANs allowed by the sub-interface include VLANs specified by vlan-id1 in vlan mapping vid vlan-id1 map-vlan vlan-id2.

      When the vlan mapping vid command is executed multiple times, vlan-id2 in the vlan mapping vid command on a sub-interface must be different from vlan-id1 and vlan-id2 in the vlan mapping vid command on other sub-interfaces of the same main interface.

Updated: 2019-05-25

Document ID: EDOC1000097279

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