Greetings,
I'm checking the "show bgp x.x.x.x" output in 3 different XR routers A, B & C in an ISP environment.
Here's an example as the best path part of the output:
Path #1: Received by speaker 0
Advertised IPv4 Unicast paths to peers (in unique update groups):
(...omit...)
(65222) 1111 2222 3333
h.h.h.h (metric m) from n.n.n.n (router-id)
If I understand it right, the h.h.h.h is the next-hop for x.x.x.x, the n.n.n.n is the neighbor who sent out this route.
※h & n are both public IP.
※cisco routing command reference explains "<nexthop> from <neighbor> (<router-id>)".
We know that 3 routers are in the same sub-AS, lets say 65111.
They got the same next-hop h.h.h.h shared by different neighbors n.n.n.n.
For me it's weird that the AS path shown in router A & B are the same: (65222) 1111 2222 3333,
but it only shows (65222) in router C, there's no 1111 2222 3333, like it's cut off.
Do anyone know what the possible reason is?
Thanks a lot.
