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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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(Optional) Configuring PW APS Parameters

(Optional) Configuring PW APS Parameters

This section describes how to configure PW APS parameters, such as the switchback mode, hold time for PW switchover, and WTR time for PW switchback. In network O&M, you can manually trigger PW switching with commands.

Context

By default, when the primary PW fails, the secondary PW quickly takes over traffic. After the primary PW recovers, traffic switches back to the primary PW. To prevent frequent service switching caused by PW flapping, configure a hold time for PW switchover and a WTR time for PW switchback.

Besides PW APS triggered by PW faults, you can manually trigger PW switching with commands in network O&M.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    pw-aps aps-id [ frr ]

    The PW APS view is displayed.

  3. Run:

    operation-type { revertive | non-revertive }

    The switchback mode for the PW APS instance is configured.

    Usually, the revertive mode is used. After the primary PW recovers, services quickly switch back to the primary PW. To reduce traffic switching times and maintain service topology stability, use the non-revertive mode.

  4. Run:

    holdoff interval

    A hold time for PW switchover is configured for the PW APS instance.

    By default, when the primary PW fails, the secondary PW quickly takes over traffic. To prevent frequent traffic switching caused by primary PW flapping or detection mechanism errors, configure a hold time for PW switchover.

  5. Run:

    wtr interval

    A WTR time is configured for the PW APS instance.

    By default, traffic switches back to the primary PW after the primary PW recovers. To prevent traffic loss caused by primary PW flapping, configure a WTR time for PW switchback.

  6. Run:

    protect-switch { force | clear | lock | manual }

    A manual request is configured for the PW APS instance.

    This operation allows you to switch traffic to the secondary PW or lock traffic to the primary PW for link monitoring and debugging in network O&M. After the maintenance operations are complete, delete this configuration.

  7. Run:

    commit

    The configuration is committed.

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Updated: 2019-01-14

Document ID: EDOC1100058925

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