Bidirectional Forwarding Detection (BFD) Protocol Cheat Sheet
Definition This is a protocol initially described in RFC5880 and IPv4/IPv6 specifics in RFC5881. I would say this is an aggressive 'hello-like' protocol with shorter timers but very lightweight on t...
Published Aug 22, 2019
Version 1.0
dragonflymr
Cirrostratus
CirrostratusHi,
Great article, even if a bit to technical for me :-( I wonder how BFD can be used for static routes i cluster config. Sorry if my question do not make any sense but I am real newbie related to more advanced routing topics.
Let's se we have BIG-IP cluster, then I can see those usage scenarios:
- BIG-IP has static route set pointing to external router as next hop
- External router has BIG-IP set as next hop
- Mix of above
In cluster setup using Self IP do not make sense, so Floating IP should be used. Is that possible with BFD for static routing? If so can one use BFD functionality to trigger failover?
For example Active node is detecting that next hop router is down, so failover to Standby should be performed.
In case of external router I guess things should be easier, if Floating IP can be configured as target for BFD check then after failover same IP will be up so everything should work OK.
Piotr