multiple origin ASes

Wed Jan 10 08:06:52 UTC 2001

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 at merit.edu [mailto:owner-nanog at merit.edu]On Behalf Of
> > abha
> > Sent: Tuesday, January 09, 2001 7:02 PM
> > To: nanog at 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 ;)
> >
>
>
>