Question

A network engineer configures BFD on a Layer 3 point-to-point link between R1 and R2 to speed up EIGRP convergence. The interface commands 'bfd interval 300 min_rx 300 multiplier 3' are applied on both routers, and the interface is up. However, when the link fails on an intermediate transport device, EIGRP still waits for its hold timer to expire before removing the neighbor. Running 'show bfd neighbors' on R1 shows no BFD sessions established. Which action will most likely enable BFD-triggered fast failover for EIGRP?

Accepted Answer

Enable BFD for EIGRP under the EIGRP process with the 'bfd interface <name>' or 'bfd all-interfaces' command so EIGRP registers as a BFD client

Answer

Increase the BFD multiplier to 5 on both routers to allow the session enough time to negotiate

Answer

Configure 'ip hello-interval eigrp <as> 1' on the interface to force EIGRP to detect the failure faster

Answer

Change the BFD interval to 50 ms so it falls below the EIGRP hold timer threshold