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Re: Verio Peering Question
From: Jared Mauch <jared () puck Nether net>
Date: Sun, 30 Sep 2001 11:34:25 -0400

On Sun, Sep 30, 2001 at 01:10:00PM +0100, Stephen J. Wilcox wrote:
theres only 20000 AS's, and its the AS that is defined as having a single
routing policy not the prefixes. why cant internet routing be based on AS
announcements, yeah i know you need to rewrite everything but i couldnt
think of a better idea. :)

        Smaller isps tend to not have consistent route announcements
to all their upstreams.  one path gets prepended while the other gets
a different set of prefixes advertized due to the routes being more
'regionally close' within their own network, or for other policy
reasons.  ie: prefix with 5m traffic gets adverted out a link where
they want to use a fixed-price transit circuit instead of a 
burst-measured circuit that has a higher per-mb/s cost.

Jared Mauch  | pgp key available via finger from jared () puck nether net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.

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