Matthew Walster wrote, 05.07.2011 16:07:
2011/7/5 Mikhail A. Grishin<m...@ripn.net>:
What purpose of '{' and '}' at BGP.as_path output?
It indicates an "AS Set" - some aggregation happened, the longer
routes of which were in the two ASNs in the brackets.
Why at 'show route' we see only '[i]'? (expected to see the first AS in
as_path)
IMO, it should show AS48467 as they were the aggregator.
Moreover, this prefix (94.228.160.0/20) was filtered and not accepted
because of this BIRD structure:
# Apply as_path filters on the last AS (originated route)
allas = [ 15905, 34211, 41206, 44116, 44893, 47773, 48467, 50875,
51031, 51186, 51443, 52163 ];
if ! (bgp_path.last ~ allas) then reject;
So bgp_path.last doesn't hit to 48467 in this case.
Is this normal?
Matthew Walster
