[183168] in North American Network Operators' Group

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Re: Cogent revisited

daemon@ATHENA.MIT.EDU (Justin M. Streiner)
Sun Aug 16 23:27:00 2015

X-Original-To: nanog@nanog.org
Date: Sun, 16 Aug 2015 23:26:41 -0400 (EDT)
From: "Justin M. Streiner" <streiner@cluebyfour.org>
To: "nanog@nanog.org" <nanog@nanog.org>
In-Reply-To: <CAAWx_pWn1nXLkFcsNvBTf8BCOg_4gWvLs9v2nsZvQf9KP7-hEg@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org

On Wed, 12 Aug 2015, James Bensley wrote:

> Perhaps that depends on were are you in the world and your traffic types.
>
> I have worked with two UK ISPs that have Cogent as one of their
> transit providers, neither have had any problems in the 5+ years
> they've both had the Cogent transit, it has always "just worked".

And for the most part, that will be the case.  If you're multi-homed, it's 
really not a major issue.  It's more when someone is:
1. single-homed to Cogent and they get into a peering/transit/pay-us spat 
with one of the DFZ carriers, and Cogent gets de-peered. Single-homed 
customers of $de-peering_carrier disappear from your view of the Internet.
2. single-homed to one of said DFZ carriers and a peering/transit/pay-us 
spat arises with Cogent, and Cogent gets de-peered.  Single-homed customers
of Cogent's disappear from your view of the Internet.

jms

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