B) We have our own AS and IP space. I advertise them to both Cogent and
our other ISP. I use the local preference attribute to share the load
for incoming traffic between both ISPs. In the last 5 outages over the
last few years, this has happened twice. I'm waiting on the RFO so I can
further investigate why this happened. I think someone mentioned this in
a post a few months ago too.
It sucks for us, because we're a small school and don't have someone in
a NOC to monitor our networks 24x7. I literally had to get out of bed
and disable our BGP session with them for us to get through the outage.
I was getting around 90% packet loss from my home to our router.
On 2/6/2014 4:57 PM, Eric Flanery (eric) wrote:
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 <vrist...@ramapo.edu
<mailto:vrist...@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
--
Vlad
