nanog mailing list archives
Re: why not AS number based prefixes aggregation
From: Ricardo Oliveira <rveloso () cs ucla edu>
Date: Mon, 8 Sep 2008 10:10:58 -0700
Topological aggregation based on ASN is often too course granularity, see this paper:
http://www.cs.ucla.edu/~rveloso/papers/giro.pdf specifically Fig4 is a good example, and sec 4C. Cheers, --Ricardo On Sep 8, 2008, at 6:20 AM, yangyang. wang wrote:
Hi, everyone:For routing scalability issues, I have a question: why not deploy AS number based routing scheme? BGP is path vector protocol and the shortest paths are calculated based on traversed AS numbers. The prefixes in the sameAS almost have the same AS_PATH associated, and aggregating prefixesaccording to AS will shrink BGP routing table significantly. I don't knowwhat comments the ISPs make on this kind of routing scheme. -yang
Current thread:
- why not AS number based prefixes aggregation yangyang. wang (Sep 08)
- Re: why not AS number based prefixes aggregation Nathan Ward (Sep 08)
- Re: why not AS number based prefixes aggregation Scott Brim (Sep 08)
- Re: why not AS number based prefixes aggregation Owen DeLong (Sep 08)
- Re: why not AS number based prefixes aggregation yangyang. wang (Sep 08)
- Re: why not AS number based prefixes aggregation Dave Israel (Sep 08)
- Re: why not AS number based prefixes aggregation Benson Schliesser (Sep 08)
- Re: why not AS number based prefixes aggregation William Herrin (Sep 08)
- Re: why not AS number based prefixes aggregation Christopher Morrow (Sep 08)
- Re: why not AS number based prefixes aggregation Jeroen Massar (Sep 08)
- Re: why not AS number based prefixes aggregation Ricardo Oliveira (Sep 08)
- RE: why not AS number based prefixes aggregation Paul Francis (Sep 08)
- Re: why not AS number based prefixes aggregation Jean-François Mezei (Sep 08)
- RE: why not AS number based prefixes aggregation Paul Francis (Sep 09)
- RE: why not AS number based prefixes aggregation Paul Francis (Sep 08)
- <Possible follow-ups>
- RE: why not AS number based prefixes aggregation Boyd, Benjamin R (Sep 08)