[96129] in North American Network Operators' Group

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Re: Number of BGP routes a large ISP sees in total

daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Wed Apr 18 03:16:59 2007

Date: Wed, 18 Apr 2007 08:43:22 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: nanog@merit.edu
In-Reply-To: <8304C5DF-A580-408D-82B5-454D061038A2@cs.princeton.edu>
Errors-To: owner-nanog@merit.edu


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.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se

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