On Mon, Jul 29, 2002 at 03:35:19PM -0700, Brian wrote:
the large quantity of /24 announcements is, I suspect, from comapnies just large enough to want the benefits of multihoming. You know, 2 t1s on a small router, and stuff like that..
Everyone and their mother says they "suspect" that, but noone ever proves it. Ever wonder why? Let's take it by the numbers: Total ASes present in the Internet Routing Table: 13448 Origin-only ASes present in the Internet Routing Table: 11641 Origin ASes announcing only one prefix: 5154 Transit ASes present in the Internet Routing Table: 1807 Even if every origin-only AS was a smalltime company with just enough IPs for a /24, it would take around 6-7 /24s each to account for the number of /24s announced. If someone has done an actual study of where these /24s (and probably /23s too) come from, please point it out. Until then, my money is on clueless redist connected/statics, large cable/dsl providers who announce a /24 per pop/city/whatever to their single transit provider, and general ignorance. Why attribute to functionality what can easily be explained by incomptence. :) -- Richard A Steenbergen <ras@e-gerbil.net> http://www.e-gerbil.net/ras PGP Key ID: 0x138EA177 (67 29 D7 BC E8 18 3E DA B2 46 B3 D8 14 36 FE B6)