On Thu 13 Nov 2025 13:25:10 GMT, Tore Anderson via NANOG wrote:
Den 12.11.2025 23:14, skreiv John Kristoff via NANOG:
I'd be interested in hearing if people set a hostname on their BGP routers and send it to peers (internal and/or external).
I'm also interested in hearing if you see external peers sending it to you.
Yes and yes. We see a few route server operators (Netnod and Verizon) to be specific advertise it to us. We find it useful, as it makes the neighbour summary more human readable for those peers, as we do not have to remember their IP addresses and/or AS numbers to know which peer it is at a glance:
$ show bgp ipv4 unicast vrf internet summary
…
r1.nix.dnadm.se(185.1.55.200) 4 8674 2289433 2289357 0 0 0 04w2d03h 0 4 r1.osl.dnadm.se(185.1.55.201) 4 8674 2289420 2289341 0 0 0 02w1d02h 0 4 athenalb1.elosl3.electra.vrsn.com(185.1.55.204) 4 26415 2286083
I also see it on some eBGP sessions on the RS as an IXP operator. On my side, I use it on iBGP on my RRs as I configured a range to be the dynamic peers, and I know who’s who with it. -- Alarig