[j-nsp] Curly braces in AS-path

[Jared Mauch]

On Sep 10, 2013, at 12:45 PM, Vincent De Keyzer <vincent at dekeyzer.net> wrote:

> Hello all,
> 
> the following comes from the TeliaSonera looking glass (http://lg.telia.net/
> ):
> 
> Router: Hong Kong
> Command: show route protocol bgp 1.38.0.0/17 table inet.0
> 
> inet.0: 518574 destinations, 1103564 routes (518516 active, 113 holddown,
> 1207 hidden)
> + = Active Route, - = Last Active, * = Both
> 
> 1.38.0.0/17        *[BGP/170] 1w2d 17:44:34, MED 0, localpref 150
>                      AS path: 1273 55410 38266 {38266} ?
>> to 80.239.130.206 via ge-2/1/1.0
> 
> What do the curly braces in the AS path mean? More generally, does someone
> know a document explaining how to interpret the output of "sh route prot
> bgp"?

AS-SET

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094826.shtml#aggregatingwiththeassetargument
- Jared