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Configuration Guide - Reliability

S7700 and S9700 V200R011C10

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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(Optional) Enabling the Backup Device in a VRRP Backup Group to Forward Traffic

(Optional) Enabling the Backup Device in a VRRP Backup Group to Forward Traffic

Context

On large aggregation networks of enterprises, terminal users use active and standby links to access aggregation devices that have a VRRP backup group deployed. The aggregation device connects to the active link is the master device, and that connects to the standby link is the backup device. If the active link or the master device fails, a link switchover occurs. However, the master/backup switchover in the VRRP backup group has not yet completed. Therefore, a traffic interruption occurs and lasts for a short period.

To prevent traffic interruptions in such scenarios, enable the backup device in a VRRP backup group to forward traffic. This configuration ensures carrier-class reliability.

Figure 3-12  Configuring the backup device in a VRRP backup group to forward traffic

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number.subinterface-number

    The view of the sub-interface on which a VRRP backup group is configured is displayed.

  3. Run vrrp vrid virtual-router-id backup-forward

    The backup device in the VRRP backup group is enabled to forward traffic.

    By default, the backup device in a VRRP backup group is disabled from forwarding traffic.

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Updated: 2019-10-18

N. documento: EDOC1000178318

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