BGP and Multi-Protocol errors

as you work through various configurations (and - envitably - troubleshooting), you may end up in situation where because of limited visibility (“hey, it’s customer device!”) you can’t really see what’s wrong on the other side. here’s one example - of (allegedly) “Multi-Protocol BGP being enabled” mp-bgp? ain’t no mp-bgp! my friend asked me for help - his Customer can’t make BGP session work and complains about “additional capabilities” we’re sending his way....

July 19, 2024 · Łukasz Bromirski

IOS XR and routes

those of you working on a daily basis with configuration and reconfiguration of network devices are likely to hit various caveats and surprises. sometimes, we hit problems that take hours to troubleshoot. route? what route? we’re adding new router. it has address of 172.16.0.11 that’s defined on Loopback0. this interface and all other physical interfaces of new router are included in area 0 of OSPF. neighbors see it that way as well:...

April 12, 2024 · Łukasz Bromirski