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
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