Hi, Adam Thompson([email protected]) on 2019.05.09 10:58:54 -0500: > I've upgraded my looking glass from 6.4 to 6.5, and an experiencing an > unexpected problem - routes learned from one (iBGP) peer are not being > automatically exported to other (eBGP) peers. > > I did not change /etc/bgpd.conf, but behaviour seems to have changed > nonetheless. The upgrade from 6.4 to 6.5 appeared smooth otherwise, > nothing to suggest subtle breakage under the hood. > > As you can see below, this bgpd.conf is almost so simple it *can't* have > problems. Apparently "almost" being the operative word. > > Under 6.4, this behaved as though "export none" only applied to the > first group. Under 6.5, it behaves as though "export none" is a global > setting. > > Under 6.5, bgpctl show produces: > root@bgpmirror:~# bgpctl sh > Neighbor AS MsgRcvd MsgSent OutQ > Up/Down State/PrfRcvd > Hermes IPv4 16796 128773 85 0 > 00:41:40 753748 > Hermes IPv6 16796 29727 85 0 > 00:41:40 68228 > MBNOG IPv4 65204 97 85 0 > 00:41:40 0 > MBNOG IPv6 65204 97 85 0 > 00:41:40 0 > BGPMon.io IPv4 6447 0 21 0 Never > Active > isolario.it IPv4 65517 86 85 0 > 00:41:39 0 > isolario.it IPv6 65517 86 85 0 > 00:41:39 0 > and the operator of the MBNOG route collector confirms that I stopped > sending him a full routing table at the same time I did the OS upgrade. > > Any ideas? What other information would help diagnose this problem? > > Thanks, > -Adam > > > > Dmesg & bgpd.conf: > https://gist.github.com/athompso/e334d8621ce458925e25bb44b8068341 > > > bgpd.conf, duplicated here for convenience: > > ===BOF=== > route-collector yes > socket "/var/www/run/bgpd.rsock" restricted # for bgplg > > # settings > nexthop qualify via default > fib-update no > dump table-v2 "/var/www/htdocs/bgplg/mrt/rib-dump.mrt" 3600 > dump updates in "/var/www/htdocs/bgplg/mrt/updates-in-%H%M" 300 > dump all in "/var/www/htdocs/bgplg/mrt/all-in-%H%M" 300 > > # myself > AS X > router-id X.X.X.X > > # neighbors > > group hermes { > enforce local-as no > enforce neighbor-as no > export none > > neighbor X.X.X.X { > remote-as X > descr "Hermes IPv4" > } > neighbor X:X:X:X::X { > remote-as X > descr "Hermes IPv6" > } > } > > group bgpresearch { > multihop 32 > enforce local-as no > enforce neighbor-as no > > neighbor 192.160.102.196 { > remote-as 65204 > descr "MBNOG IPv4" > } > neighbor 2620:132:3003:300::196 { > remote-as 65204 > descr "MBNOG IPv6" > } > neighbor 129.82.138.6 { > remote-as 6447 > descr "BGPMon.io IPv4" > } > neighbor 146.48.78.12 { > remote-as 65517 > descr "isolario.it IPv4" > } > neighbor 2a00:1620:c0:4e:146:48:78:12 { > remote-as 65517 > descr "isolario.it IPv6" > } > } > > # policies > allow quick from group hermes > allow quick to group bgpresearch > ===EOF===
Please check bgpctl sh rib neigh <XXX> out for all neighbors. Also look at bgpctl sh rib best if any routes are actually selected - maybe the "nexthop qualify via default" isnt working. /Benno
