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Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

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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Link Switching Failure in a Smart Link Group

Link Switching Failure in a Smart Link Group

Possible Causes

Data flows are locked to the master or slave interface.


  1. Check configuration of the Smart Link to see whether data flows are locked on an interface.

    Run the display smart-link group group-id command and check the Link status field in the command output.

    If the Link status field displays lock or force, data flows are locked to the master or slave interface. Run the undo smart-link { force | lock } command to remove the lock.

Updated: 2019-12-28

Document ID: EDOC1000141941

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