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Configuration Guide - VPN

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of VPN, including GRE, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, and VPLS.
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Enabling MAC Address Withdraw

Enabling MAC Address Withdraw

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

    MAC address withdraw is enabled.

    By default, MAC address withdraw is disabled.

  5. Run interface-status-change [ up | down ] 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.

  6. Run commit

    The configuration is committed.

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Updated: 2019-04-03

Document ID: EDOC1100075353

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