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CLI-based Configuration Guide - VPN

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document describes VPN features on the device and provides configuration procedures and configuration examples.
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Configuring a PE to Send MAC Withdraw Messages to Remove MAC Address Entries

Configuring a PE to Send MAC Withdraw Messages to Remove MAC Address Entries

Context

The local device cannot detect failure of the AC. When the AC is Down, the VSI remains Up and the device does not delete the corresponding MAC address entry. This results in a black hole when the local device sends data flows to the remote device. The MAC address withdraw function solves this problem by enabling the local VSI to delete the local MAC address and notify all remote peers when AC is faulty and the VSI remains Up.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run vsi vsi-name [ static ]

    The VSI view is displayed.

  3. Run pwsignal ldp

    LDP is configured as the PW signaling protocol and the VSI-LDP view is displayed.

  4. Run mac-withdraw enable

    The PE is configured to send a MAC Withdraw message when the AC or PW status changes.

    By default, this function is disabled.

  5. Run interface-status-change mac-withdraw enable

    The PE is configured to send LDP MAC Withdraw messages to all peers when the status of the AC-side interface bound to the VSI changes.

    By default, the PE does not send LDP MAC Withdraw messages to all peers when the status of the AC-side interface bound to the VSI changes.

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Updated: 2019-08-07

Document ID: EDOC1100033725

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