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CLI-based Configuration Guide - Reliability

AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009

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Setting the WTR Time of a BFD Session

Setting the WTR Time of a BFD Session


If a BFD session flaps, an active/standby switchover is frequently performed on the application associated with the BFD session. To prevent the problem, set the WTR time of the BFD session. When the BFD session changes from Down to Up, BFD reports the change to the upper layer application only after the WTR timer times out.

If the WTR time is set, set the same WTR time at both ends. Otherwise, when the BFD session status changes at one end, applications at both ends detect different BFD session statuses.


  1. Run system-view

    The system view is displayed.

  2. Run bfd session-name

    The BFD session view is displayed.

  3. Run wtr wtr-value

    The WTR time is set.

    By default, the WTR time is 0, indicating that the status change of a BFD session is reported immediately.

Updated: 2019-05-17

Document ID: EDOC1000174116

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