as_path question

[Mikhail A. Grishin]

Hi,

Ordinary as_path from 'show route all' output usually looks like:
-------------------------
78.153.135.0/24    via 193.232.244.186 on bce1 [R48467x1 2011-07-04 
16:16:21] (100) [AS44116i]
         Type: BGP unicast univ
         BGP.origin: IGP
         BGP.as_path: 48467 44116 44116
         BGP.next_hop: 193.232.244.186
         BGP.local_pref: 100
-------------------------


Here is unusual as_path example:
-------------------------
94.228.160.0/20    via 193.232.244.186 on bce1 [R48467x1 2011-07-05 
01:28:04] * (100) [i]
         Type: BGP unicast univ
         BGP.origin: IGP
         BGP.as_path: 48467 { 49245 50448 }
         BGP.next_hop: 193.232.244.186
         BGP.local_pref: 100
         BGP.aggregator: 178.236.240.1 AS48467

What purpose of  '{' and '}' at BGP.as_path output?

Why at 'show route' we see only '[i]'? (expected to see the first AS in 
as_path)