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CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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Configuring the Output of IS-IS Adjacency Status

Configuring the Output of IS-IS Adjacency Status


On an IS-IS network, neighbor flapping will result in network instability and frequent network convergence. This will consume lots of memory and may even cause user traffic loss. Therefore, neighbor flapping needs to be rapidly located and solved.

To rapidly locate problems in the case of neighbor flapping, enable the output of IS-IS adjacency changes to log these changes.

If the local terminal monitor is enabled and the output of the IS-IS adjacency status is enabled, IS-IS adjacency changes will be output to the router until the output of the adjacency status is disabled.


  1. Run system-view

    The system view is displayed.

  2. Run isis [ process-id ]

    The IS-IS view is displayed.

  3. Run log-peer-change [ topology ]

    The output of the adjacency status is enabled.

    By default, the output of IS-IS adjacency changes is disabled.

Updated: 2019-12-27

Document ID: EDOC1000174069

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