birdc show route output question

[Adam Thompson]

Hi,
I’m successfully using BIRD with the Go Looking Glass from https://github.com/xddxdd/bird-lg-go.  I haven’t needed to use the birdc CLI until now, and I’m a bit confused by it in ways the docs don’t appear to address.
(I’m running default distro pkgs on Alma Linux 8.5, one of the post-CentOS RHEL rebuilds.)

The output I get looks like:
[root at lg2 ~]# birdc show route | head
BIRD 2.0.9 ready.
Table master4:
223.94.242.0/23      unreachable [uwpg_rtr1_v4 2022-03-26 from 216.73.71.131] * (100) [AS56041?]
                     unreachable [umrtr2_v4 2022-03-26 from 206.211.216.52] (100) [AS56041?]
                     unreachable [umrtr1_v4 2022-03-26 from 206.211.216.51] (100) [AS56041?]
181.123.200.0/22     unreachable [umrtr1_v4 2022-03-26 from 206.211.216.51] * (100) [AS23201i]
                     unreachable [umrtr2_v4 2022-03-26 from 206.211.216.52] (100) [AS23201i]
                     unreachable [uwpg_rtr1_v4 2022-03-26 from 216.73.71.131] (100) [AS23201i]
88.218.186.0/24      unreachable [umrtr1_v4 2022-03-26 from 206.211.216.51] * (100) [AS62240i]
                     unreachable [umrtr2_v4 2022-03-26 from 206.211.216.52] (100) [AS62240i]


  1.  Is the “unreachable” bit normal on a looking glass / route collector?
  2.  What’s with the “?” at the end of some ASes?
  3.  Where’s the AS paths?  All I seem to get is the terminal AS.

I’m not sure if I’m not using the tool correctly, or if I’m even using the right tool in the first place.

Pointers / clues appreciated?

Thanks,
-Adam

Adam Thompson
Consultant, Infrastructure Services
[MERLIN]
100 - 135 Innovation Drive
Winnipeg, MB, R3T 6A8
(204) 977-6824 or 1-800-430-6404 (MB only)
athompson at merlin.mb.ca<mailto:athompson at merlin.mb.ca>
www.merlin.mb.ca<http://www.merlin.mb.ca/>

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