BGP AS Sets in the wild
Hi, 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 am under the impression that AS_SETs are generated whenever there are some routes that are aggregated. Is there any other way also to generate AS_SETs in BGP? Any clues. Thanks, Abhishek -- Class of 2004 Institute of Technology, BHU Varanasi, India
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.
On 8/23/05, Iljitsch van Beijnum <iljitsch@muada.com> wrote:
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.
Sure there are... route-views.oregon-ix.net>sho ip bgp 24.223.128.0/17 BGP routing table entry for 24.223.128.0/17, version 1030251 Paths: (47 available, best #20, table Default-IP-Routing-Table) Not advertised to any peer 2914 1668 10796 {11060,12262}, (aggregated by 10796 24.95.80.203) 129.250.0.11 from 129.250.0.11 (129.250.0.88) Origin IGP, metric 1, localpref 100, valid, external, atomic-aggregate Community: 2914:420 2914:2000 2914:3000 65504:1668 11608 2914 1668 10796 {11060,12262}, (aggregated by 10796 24.95.80.203) 207.246.129.6 from 207.246.129.6 (207.246.155.208) Origin IGP, localpref 100, valid, external, atomic-aggregate Community: 2914:420 2914:2000 2914:3000 11608:801 11608:1004 11608:5501 65504:1668 6079 1668 10796 {11060,12262}, (aggregated by 10796 24.95.80.203) 207.172.6.162 from 207.172.6.162 (207.172.6.162) Origin IGP, metric 0, localpref 100, valid, external, atomic-aggregate 11608 3491 1668 10796 {11060,12262}, (aggregated by 10796 24.95.80.203) 207.246.129.14 from 207.246.129.14 (207.246.129.14) Origin IGP, localpref 100, valid, external, atomic-aggregate Community: 11608:1006 11608:550 --chip -- Just my $.02, your mileage may vary, batteries not included, etc....
participants (3)
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Abhishek Verma -
chip -
Iljitsch van Beijnum