Hi Seunghwan, Sorry for my late response (had two weeks of holiday).
Your BFD protocol block doesn't mention any interfaces. The documentation states (see https://bird.network.cz/?get_doc&v=20&f=bird-6.html#ss6.2) that shouldn't be needed however: > Note that contrary to the behavior of interface definitions of other > protocols, BFD protocol would accept sessions (in default > configuration) even on interfaces not covered by such definitions. That would suggest your configuration is valid (as far as I can tell) so you're either hitting a bug or I misinterpreted the documentation. What you might do is adding the interfaces carrying the BGP packets anyway. Feels a little like a workaround, but it might help you. Adding could be as simple as: > protocol bfd { > interface "eth0" { > }; > } (In this example your multihop configuration should be added again, obviously.) Regards, Kees On 03-08-2020 03:56, seunghwan hwang wrote: > Hello K. > > Sorry, I'm late. > Here is my full configuration > > =================================================================== > > log "/var/log/bird/bird.log" { debug, trace, info, remote, warning, > error, auth, fatal, bug }; > debug protocols all; > > # Loopback IP > router id [bird-server lo ip]; > > > protocol kernel { > persist; # Don't remove routes on bird shutdown > scan time 20; # Scan kernel routing table every 20 > seconds > import none; # Default is import all > export all; # Default is export none > merge paths on; # Enable ECMP Multi path. > } > > protocol direct { > interface "lo"; > } > > protocol device { > scan time 10; # Scan interfaces every 10 seconds > } > > protocol bfd { > multihop { > min rx interval 300 ms; > min tx interval 300 ms; > multiplier 3; > }; > } > > protocol static { > > route [swich A router-id] via [interface IP to switch A]; > route [swich B router-id] via [interface IP to switch B] ; > } > > # BGP Configuration > protocol bgp as1 { > import all; > export all; > > # local Loopback IP > # neighbor (tchy loopback ip) > local [bird-server lo ip] as 65001; > neighbor [swich A router-id] as 65001; > hold time 30; > enable route refresh off; > bfd on; > } > > protocol bgp as2 { > import all; > export all; > > local [bird-server lo ip] as 65001; > neighbor [swich B router-id] as 65001; > hold time 30; > enable route refresh off; > bfd on; > } > > =================================================================== > > Please check it. > > Regards. > > 2020년 7월 29일 (수) 오후 4:46, Kees Meijs | Nefos <[email protected] > <mailto:[email protected]>>님이 작성: > > Hi, > > Yes we have; multiple times. > > Could you please provide a full configuration? (Feel free to remove > passwords and such, obviously.) > > Cheers, > Kees > > On 29-07-2020 09:45, seunghwan hwang wrote: > > Is not working. > > Have you ever rebooted(# shutdown -r now) with your settings? > > Still, only the BGP is established and the BFD state remains in > Init. > > >
