Cogent revisited

Mon Aug 17 03:26:41 UTC 2015

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