[134311] in North American Network Operators' Group
Re: How many legitimate cases when Origin AS in BGP announcement
daemon@ATHENA.MIT.EDU (Akmal Shahbaz)
Tue Jan 4 11:22:41 2011
Date: Tue, 4 Jan 2011 08:22:35 -0800 (PST)
From: Akmal Shahbaz <akmal_shahbaz@yahoo.com>
To: Stephane Bortzmeyer <bortzmeyer@nic.fr>
In-Reply-To: <20110104160510.GA936@nic.fr>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
>>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?
Thanks
Akmal
--- On Tue, 1/4/11, Stephane Bortzmeyer <bortzmeyer@nic.fr> wrote:
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
Subject: Re: How many legitimate cases when Origin AS in BGP announcement changed by another AS?
To: "Akmal Shahbaz" <akmal_shahbaz@yahoo.com>
Cc: nanog@nanog.org
Date: Tuesday, January 4, 2011, 4:05 PM
On Tue, Jan 04, 2011 at 04:38:19AM -0800,
Akmal Shahbaz <akmal_shahbaz@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
change.
