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Configuration Guide - VPN

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the VPN configuration procedures and provides configuration examples.
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Configuring a VSI to Ignore the AC Status

Configuring a VSI to Ignore the AC Status

Context

Figure 7-30  Networking diagram of configuring a VSI to ignore the AC status

As shown in Figure 7-30, if the services running on the old network will switch to the new network, and you want to check whether the VSI on the new network can work normally before the service switchover, you need to configure the VSI to ignore the AC status on D'. After the configuration, the VSI on D' keeps Up before the DSLAM is connected to the new network.

The AC statuses are classified into the following statuses:

  • The status of a physical AC interface or logical AC interface that is bound to the VSI
  • The UPE PW status in the scenario of VLL accessing VPLS

If an AC interface is Down and the PW is Up, the VSI remains Up after being enabled to ignore AC status. If an AC interface is Up and the PW is Down, the VSI remains Up after being enabled to ignore AC status.

Do as follows on the PE (D' in Figure 7-30):

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run the following commands as required:
    • If you want to prevent the status of all the VSIs from being affected by the status of the AC: Run:

      1. Run:

        mpls l2vpn

        The MPLS L2VPN view is display.

      2. Run:

        vpls ignore-ac-state

        The status of a VSI is prevented from being affected by the status of the AC.

    • If you want to prevent the status of one VSI from being affected by the status of the AC:

      1. Run:

        vsi vsi-name [ static ]

        The VSI view is displayed.

      2. Run:

        ignore-ac-state

        The status of a VSI is prevented from being affected by the status of the AC.

Follow-up Procedure

The vpls ignore-ac-state or ignore-ac-state are used only before the service switchover between a new VPLS network and an old one. After the service switchover, run the undo vpls ignore-ac-state or undo ignore-ac-state command to restore the default setting.

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Updated: 2019-04-18

Document ID: EDOC1000141944

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