nanog mailing list archives

Re: carrier comparison


From: "Eric Flanery (eric)" <eric () flanery us>
Date: Thu, 6 Feb 2014 13:57:02 -0800

Vlade,

When you say that "they still advertise your routes", do you mean:

A: That you were having them originate your routes, and they failed to stop
doing so when they had problems? Or...

B: That routes you were originating continued to be propagated by them,
even though your session with them was down? Or...

C: Something else.

I ask, as we are considering some cheap Cogent bandwidth in the
not-too-distant future, to allow us to keep commit rates low on higher
quality connections. 'A' wouldn't be a real problem, since we run our own
AS and originate our own routes; 'B' could be potentially devastating.


On Thu, Feb 6, 2014 at 8:04 AM, Vlade Ristevski <vristevs () ramapo edu> wrote:

We have had Cogent over Verizon's Fiber for more than a few years now.
Cogent goes down once at year at minimum. They had 2 outages in a single
day a couple days ago in Northern NJ.  One in the AM "..caused by a power
outage in a vendor data center where Cogent is collocated." They went on to
have another outage at around 9:30 PM on the same day for which I'm still
waiting for an RFO. During this outage, they still were advertising our BGP
routes so we didn't fail over to our 2nd provider. I notice that happens
alot with them. When they go down, they still advertise your routes.

As far as price goes, for us Cogent is cheap but Lightpath is cheaper.

Our college is kind of far from things so we don't have a lot of outside
fiber coming. The last mile fiber for both of our connections are different
from our Internet providers. I've never had a big issue with the two
working with each other. The only issue we had is I suspected we weren't
getting as much bandwidth as we paid for. They had to work out where the
policer and/or bottle neck was. This is the only issue we had in 5 years
with this set up and it got resolved. IME, when there is a full outage,
it's always been clear who the responsible party is.






On 2/6/2014 10:17 AM, Adam Greene wrote:

Hi,


We're a small ISP / datacenter with a Time Warner fiber-based DIA contract
that is coming up for renewal.


We're getting much better pricing offers from Cogent, and are finding out
what Level 3 can do for us as well. Both providers will use Time Warner
fiber for last mile.


My questions are:

-          Will we be sacrificing quality if we spring for Cogent?
(yesterday's Cogent/Verizon thread provided some cold chills for my spine)

-          Is there a risk with contracting a carrier that utilizes
another
carrier (such as Time Warner) for the last mile? (i.e. if there is a
downtime situation, are we going to be caught in a web of confusion and
finger-pointing that delays problem resolution)?

-          How are peoples' experiences with L3 vs TWC?


Although I assume everyone on the list would be interested in what others
have to say about these questions, out of respect for the carriers in
question, I encourage you to email frank opinions off list.


Or if there are third party tools or resources you know that I could
consult
to deduce the answers to these questions myself, they are most welcome.


Thanks,

Adam





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