Hi Dima...
One of the origins :) of inconsistent routes is improper multihoming -- a network is multihomed but no public ASN is assigned to it; some private ASN is used and stripped off (by remove-private-as) at the edges of the both (or many) ISPs, which results in multiple origin ASs for the network prefix. I don't know how intentional this practice is, though :)
Yeah. I know about that origin of inconsistent ASes. I'm more curious about other creative occurences... Thanks! -abha ;)
The question about how bad inconsistent routes are was also addressed on this list. -- dima.
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of abha Sent: Tuesday, January 09, 2001 7:02 PM To: nanog@merit.edu Subject: multiple origin ASes
Hi All!
I'm trying to get a feeling for how often ISPs announce a prefix from different origin ASes intentionally.... (and why...)
I asked this question on my peering survey (*grin*), but I thought i'd hit a wider audience...
Thanks.
-abha ;)