On 2012-09-18, Bernd <be...@kroenchenstadt.de> wrote: > Hi list, > > I've got two OpenBSD (5.1-STABLE, amd64) machines running OpenBGPd. > > Both of them are connected to two upstream providers each, furthermore > there are (older) Ciscos, also connecteed to the same (!) upstream > routers. > > Recently, both OpenBSD machines lost their BGP session to one of the > upstream providers. On both machines the same upstream router was > affected. > > Logs show this: > > Sep 17 17:25:35 hostname bgpd[1638]: neighbor 12.23.34.45 (Upstream1): > sending notification: HoldTimer expired, unknown subcode 0 > Sep 17 17:25:35 hostname bgpd[1638]: neighbor 12.23.34.45 (Upstream1): > state change Established -> Idle, reason: HoldTimer expired > Sep 17 17:25:43 hostname ospfd[5366]: desync; scheduling fib reload > Sep 17 17:25:43 hostname ospfd[5366]: reloading interface list and > routing table > Sep 17 17:25:48 hostname bgpd[15513]: nexthop 12.23.34.45 now valid: > directly connected > Sep 17 17:26:05 hostname bgpd[1638]: neighbor 12.23.34.45 (Upstream1): > state change Idle -> Connect, reason: Start > Sep 17 17:26:05 hostname bgpd[1638]: neighbor 12.23.34.45 (Upstream1): > state change Connect -> OpenSent, reason: Connection opened > Sep 17 17:26:05 hostname bgpd[1638]: neighbor 12.23.34.45 (Upstream1): > state change OpenSent -> OpenConfirm, reason: OPEN message received > Sep 17 17:26:05 hostname bgpd[1638]: neighbor 12.23.34.45 (Upstream1): > state change OpenConfirm -> Established, reason: KEEPALIVE message > received > Sep 17 17:26:20 hostname bgpd[15513]: nexthop 12.23.34.45 now valid: > directly connected > > The Ciscos didn't see anything like this, their sessions didn't drop. > > Any clue what was going on? > > Thanks, > > Bernd > >
Can't tell from this. Are you running the same hold times on your openbgp boxes as your ciscos?
