How many legitimate cases when Origin AS in BGP announcement changed by another AS?
akmal_shahbaz at yahoo.com
Tue Jan 4 10:22:35 CST 2011
>>When the old origin AS was a private one?
NO.Even when old origin AS is not private one.
Don't you think private/pubic AS won't matter in case of provider aggregation?
--- On Tue, 1/4/11, Stephane Bortzmeyer <bortzmeyer at nic.fr> wrote:
From: Stephane Bortzmeyer <bortzmeyer at nic.fr>
Subject: Re: How many legitimate cases when Origin AS in BGP announcement changed by another AS?
To: "Akmal Shahbaz" <akmal_shahbaz at yahoo.com>
Cc: nanog at nanog.org
Date: Tuesday, January 4, 2011, 4:05 PM
On Tue, Jan 04, 2011 at 04:38:19AM -0800,
Akmal Shahbaz <akmal_shahbaz at yahoo.com> wrote
a message of 443 lines which said:
> I am looking for example routing policies when any AS receiving BGP
> advertisement changes Origin AS in BGP AS set attribute to remove
> the received AS number and puts its own AS number.[legitimate cases]
When the old origin AS was a private one? Today, with 32bits AS,
everyone should have a public AS number but, in the real world, some
people do BGP with private AS that the upstream provider has to
More information about the NANOG