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.