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Configuration Guide - VPN 01

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Configuration Guide - VPN
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Configuring independent mode of PW redundancy

Configuring independent mode of PW redundancy

PW redundancy in independent mode allows a public network fault to trigger only the public network link switchover.


The primary and secondary PWs are determined by means of negotiation. Two PWs are configured on one PE to connect to two peer PEs, with both PWs being in the primary state on the local device. The peer PEs determine the primary and secondary PWs by means of E-Trunk or mVRRP, with one PW in the primary state and the other in the secondary state. The PEs on both ends negotiate and finally determine the primary PW. The independent mode applies to scenarios where PW redundancy is associated with E-Trunk. PW redundancy in independent mode, together with the bypass PW, can prevent links on the AC side from sensing faults on the network side but cannot prevent links on the network side from sensing faults on the AC side. That is, the fault on the public network will trigger only a PW switchover but not an AC link switchover whereas the fault on the AC side will trigger both an AC switchover and a PW switchover.


  1. Configuring a VPWS Connection

    Create a primary PW.

  2. Configuring a Secondary PW

    Create a secondary PW.

  3. Configure the independent PW redundancy mode.
    1. Run interface interface-type interface-number

      The AC interface view is displayed.

    2. Run mpls l2vpn redundancy independent

      The independent PW redundancy mode is configured.

    3. Run quit

      Return to the system view.

  4. (Optional) Configuring PW Switching

    The dynamic PWs switching is configured.

    If multi-segment PWs need to be set up, you must configure a switching PW on each S-PE. PW redundancy supports only dynamic switching PWs.

  5. Configure a bypass PW.
    1. Run interface interface-type interface-number

      The AC interface view is displayed.

    2. Run mpls l2vc { ip-address | pw-template pw-template-name } * vc-id [ tunnel-policy policy-name | [ control-word | no-control-word ] | [ raw | tagged ] | access-port | ignore-standby-state ] * bypass

      The bypass PW is configured.

  6. (Optional) Run mpls l2vpn stream-dual-receiving

    Enable both master and slave PWs on a CSG to receive packets, preventing packet loss during a master/slave PW switchover.

  7. (Option) Run mpls l2vpn arp-dual-sending [ expire-time expire-time ]

    The primary and secondary PWs on a CSG are both enabled to transparently transmit ARP packets, reducing the packet loss caused by a primary PW failure.

    If you specify expire-time expire-time, the master and slave PWs will set an aging timer for transparently transmitted ARP packets.

  8. Run commit

    The configuration is committed.

Updated: 2019-01-14

Document ID: EDOC1100058925

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