Hi guys,
We've been testing OpenBGPd + OpenBSD as an edge router for some time
and are pretty impressed with what it can do.
Earlier today, however, I discovered that routes that I'm announcing
under the same ASN (in another location) are being received and put into
the RIB -- but never into the kernel's FIB.
fib-update is not the issue since I can see that prefixes that are from
external ASNs happen to be working fine,
# bgpctl sh ip bgp 8.8.8.0/24
flags: * = Valid, > = Selected, I = via IBGP, A = Announced, S = Stale
origin: i = IGP, e = EGP, ? = Incomplete
flags destination gateway lpref med aspath origin
*> 8.8.8.0/24 x.218.212.x 100 0 3491 15169 i
* 8.8.8.0/24 x.88.197.x 100 12040 174 15169 i
So to say, my locally configured OpenBGPD instance has ASN n, and is
refusing to install routes that are also from ASN n (but announced in a
different location and received through ebgp from a upstream)
Example of one such network,
# bgpctl show ip bgp 10.251.113.0
flags: * = Valid, > = Selected, I = via IBGP, A = Announced, S = Stale
origin: i = IGP, e = EGP, ? = Incomplete
flags destination gateway lpref med aspath origin
10.251.112.0/21 x.218.212.x 100 0 3491 n n i
10.251.112.0/21 x.88.197.x 100 41051 174 n i
(I've chosen to obfuscate the actual ASN / prefix, but they're both
visible on the global table and the nexthop / gws are also both
reachable. n is also configured as the ASN for this instance.)
Have I missed some sort of knob in the OpenBGPD bgpd.conf manpage? I
tried looking through it for FIB filtering or similar, but couldn't find
anything. Googling did not turn up anything either
My configuration (stripping out the macros and networks) may be seen
entirely at http://paste.ee/p/unTWC#XKvmhqtFCcHZ4TQlFn8VTZMpUfs6I9I5
Thank you!
