vristevs at ramapo.edu
Thu Feb 6 22:25:53 UTC 2014
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:
> 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 at ramapo.edu
> <mailto:vristevs at 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:
> 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
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