Configuring the Delay of a BFD Session to Go Up
The delay of a BFD session to go Up is configured to prevent traffic loss because a routing protocol goes Up later than an interface.
Usage Scenario
On a live network, some devices switch traffic based only on the Up state of a BFD session. If a routing protocol goes Up later than an interface, no route is available for switching traffic back, although the BFD session goes Up. As a result, traffic is discarded. The delay must be set to compensate for the time difference caused when the routing protocol goes Up later than the interface.
Pre-configuration Tasks
Before configuring the delay of a BFD session to go Up, ensure that the router is running properly.
Procedure
- Run system-view
The system view is displayed.
- Run bfd
BFD is enabled globally on the local node, and the BFD view is displayed.
BFD can be configured only after the bfd command is run globally.
- Run delay-up seconds
The delay of the BFD session to go Up is set.
- Run commit
The configuration is committed.
