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S12700 V200R010C00 Configuration Guide - Reliability

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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Setting the Delay Before a BFD Session Becomes Up

Setting the Delay Before a BFD Session Becomes Up


In practice, some devices determine whether to switch traffic based on the BFD session status. Because the routing protocol becomes Up after the interface becomes Up, routes will be not found when services are switched back, causing traffic loss. Therefore, the interval between the time when the routing protocol becomes Up and the time when the interface becomes Up must be eliminated.


  1. Run:


    The system view is displayed.

  2. Run:


    Global BFD is enabled and the BFD view is displayed.

  3. Run:

    delay-up time

    A delay before a BFD session is set.

    By default, the delay before a BFD session becomes Up is 0.

Updated: 2019-08-21

Document ID: EDOC1000142090

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