On Thu, Apr 27, 2006 at 04:24:57PM +0100, Dunc wrote: > Hi all, > > I'm trying to configure an OpenBSD box as a BGP route reflector. > > I have an iBGP peer configured to one of our core routers which has an eBGP > session to one of our providers. I have configured that neighbor with the > "route-reflector" option in bgpd.conf. If I log updates, and watch the log > as the session comes up, I see a lot of updates come in, with the next-hop > attribute set to the IP of our provider, which is what I would expect as > the next-hop should not be changed in iBGP. > > If I then show fib or show rib with bgpctl, the next-hop for all these > routes is actually the IP of our core router, rather than that of our > provider. > > I have configured a static route on the OpenBSD box to our provider's IP, > so the problem isn't that it is an unreachable network. > > I think I must be missing something, because AFAIK, this isn't the correct > behaviour for iBGP. >
Show rib and show fib shows the true nexthop and not the exit nexthop. The true nexthop is the one that is one hop from your router whereas the exit nexthop is the nexthop sent to you by the BGP update. -- :wq Claudio
