[83729] in North American Network Operators' Group
Re: BGP AS Sets in the wild
daemon@ATHENA.MIT.EDU (Iljitsch van Beijnum)
Tue Aug 23 06:57:06 2005
In-Reply-To: <ce8d903305082303363d9b9c8b@mail.gmail.com>
Cc: nanog@nanog.org
From: Iljitsch van Beijnum <iljitsch@muada.com>
Date: Tue, 23 Aug 2005 12:55:33 +0200
To: Abhishek Verma <abhishekv.verma@gmail.com>
Errors-To: owner-nanog@merit.edu
On 23-aug-2005, at 12:36, Abhishek Verma wrote:
> I was looking at route-views.routeviews.org for the BGP routes and i
> dont see any AS-Sets whatsoever. Are BGP routes with AS-SETs not
> generally leaked into the wild?
> Is this the case?
I guess they aren't.
> I am under the impression that AS_SETs are generated whenever there
> are some routes that are aggregated.
Yes, but aggregation in the BGP protocol is a relic from the BGP3-to-
BGP4 transition, AFAIK it's rarely used these days.
