[96130] in North American Network Operators' Group
Re: Number of BGP routes a large ISP sees in total
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Wed Apr 18 11:23:21 2007
In-Reply-To: <Pine.LNX.4.64.0704180841210.28703@uplift.swm.pp.se>
Cc: "Patrick W. Gilmore" <patrick@ianai.net>
From: "Patrick W. Gilmore" <patrick@ianai.net>
Date: Wed, 18 Apr 2007 11:22:18 -0400
To: nanog@merit.edu
Errors-To: owner-nanog@merit.edu
On Apr 18, 2007, at 2:43 AM, Mikael Abrahamsson wrote:
> On Tue, 17 Apr 2007, Yi Wang wrote:
>
>> sense about the average (e.g., about 5? 10? 20?), as for a "large"
>> ISP.
>
> Well, if you're interconnecting with other large ISPs in 5 places
> then you'll get each prefix at least 5 times. Having 5 eBGP
> sessions between two ASes is quite common if both are large ISPs.
> So yes, I'd say that between 5-10 is quite common.
At least 5, and more than 10 for many prefixes, inside very, very
large networks.
--
TTFN,
patrick
