On Tue, Mar 05, 2019 at 05:21:44PM -0500, Arzhel Younsi wrote: > Hi, > > I'm trying to setup BFD multihop session between Bird 1.6.3 and a Juniper MX > router to fast failover eBGP multihop sessions.
Hi I guess this could be strict src port checking in Juniper, see https://bird.network.cz/?get_doc&v=16&f=bird-6.html#ss6.2 : BFD packets are sent with a dynamic source port number. Linux systems use by default a bit different dynamic port range than the IANA approved one (49152-65535). If you experience problems with compatibility, please adjust /proc/sys/net/ipv4/ip_local_port_range And also: https://bird.network.cz/pipermail/bird-users/2015-August/009846.html -- Elen sila lumenn' omentielvo Ondrej 'Santiago' Zajicek (email: santi...@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."