[138973] in North American Network Operators' Group
Re: Regional AS model
daemon@ATHENA.MIT.EDU (Owen DeLong)
Thu Mar 24 15:43:51 2011
In-Reply-To: <8B604AC6-01B7-45C7-8DCD-5559758E371B@zaidali.com>
From: Owen DeLong <owen@delong.com>
Date: Thu, 24 Mar 2011 13:40:23 -0600
To: Zaid Ali <zaid@zaidali.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Sent from my iPad
On Mar 24, 2011, at 12:42 PM, Zaid Ali <zaid@zaidali.com> wrote:
> I have seen age old discussions on single AS vs multiple AS for backbone a=
nd datacenter design. I am particularly interested in operational challenges=
for running AS per region e.g. one AS for US, one EU etc or I have heard fo=
lks do one AS per DC. I particularly don't see any advantage in doing one AS=
per region or datacenter since most of the reasons I hear is to reduce the i=
BGP mesh. I generally prefer one AS and making use of confederation.=20
>=20
> Zaid
If you have good backbone between the locations, then, it's mostly a matter o=
f personal preference. If you have discreet autonomous sites that are not co=
nnected by internal circuits (not VPNs), then, AS per site is greatly prefer=
able.
Owen
