OSPF timers vs BFD

[Yasik1978]

Hello!

A question about Cisco XR.
If we configure on an interface both OSPF timers 5/1/1 and BFD session - isnt this config redundant/incorrect, and which part of it will take precedence?
Like this:

router ospf 1

vrf TEST

area 0

bfd minimum-interval 50

bfd multiplier 3

bfd fast-detect

interface te 0/0/0/1

dead-interval 5

hello-interval 1

retransmit-interval 1

Thanks in advance!

[Aleksandar Vidakovic]

It is indeed redundant. Our recommendation is use BFD for fast peer loss detection and leave the BFD's client timers (in this case IGP) at default.

If you configure restrictive OSPF timers and BFD, both will be applied.