Enabling BFD in only one side

[p.diaz]

Hi Everybody

The theory tells that if BFD stops to receive keepalives, it informs to the routing protocols that the neihgbor is down. If I configure BFD only in one side and associate BFD with the routing protocol, the neighborship goes down?

Thanks

[Laurent Aubert · Accepted solution]

Hi,

You need BFD on both side but you could use echo mode on one side only.

I tested it with 12.2(33)SRC2, and configuring BFD on one side only doesn't bring down the IGP adj. The BFD session stays in AdminDown state.

HTH

Laurent.