Holdover Timer

The holdover time interval for a BFD session is configured at the application or protocol level. An application or protocol pushes the configured holdover time interval to the BFD controller that keeps track of the holdover time per application or protocol per session.

The holdover timer per application or protocol per session is started whenever there is a session failure notification from the micro controller. If the BFD session comes back up before the configured holdover time interval times out, the session state is updated and the timer for the applications or protocols using the BFD session is stopped. The BFD session then resumes. If the BFD session is not back up within the configured time interval, the respective applications or protocols are notified about the session failure. Applications or protocols running at the remote endpoint for the BFD session also require the exact configuration of the holdover timer if the remote device has a similar limitation.

For more information, refer to the following commands in the RUCKUS FastIron Command Reference:

  • bfd holdover-interval
  • ip route bfd holdover-interval
  • neighbor bfd
Parent topic: BFD