[167304] in North American Network Operators' Group
Re: Cogent & Level 3 routing issue?
daemon@ATHENA.MIT.EDU (Eric Tykwinski)
Sat Dec 7 17:33:39 2013
From: Eric Tykwinski <eric-list@truenet.com>
In-Reply-To: <52A387D3.6000907@unlimitednet.us>
Date: Sat, 7 Dec 2013 17:33:13 -0500
To: nanog <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Honestly from the Internet Health Report, I've noticed connections =
between Level3 and Cogent are red quite a bit.
http://www.internethealthreport.com/
Bad samples or peering issues could be the cause either way, but it's =
been ongoing for awhile.
Sincerely,
Eric Tykwinski
TrueNet, Inc.
P: 610-429-8300
F: 610-429-3222
On Dec 7, 2013, at 3:40 PM, Jason Canady <jason@unlimitednet.us> wrote:
> Unfortunately Cogent has a lot of peering issues. We use them in our =
network blend and we have been having lots of problems with traffic =
outbound to Comcast. It looks like from South Bend, Indiana on Cogent =
to Chicago / Level 3 we are getting a very tiny amount of packet loss =
and a higher than 'normal' latency of 35ms+.
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> Where are you connected to Cogent at? And what destination are you =
going to on Level 3?
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> Best Regards,
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> --=20
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> Jason Canady
> Unlimited Net, LLC
> Responsive, Reliable, Secure
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> www.unlimitednet.us
> jason@unlimitednet.us
> twitter: @unlimitednet
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> On 12/7/13 3:14 PM, Matthew Crocker wrote:
>> Anyone seeing issues between Cogent & Level3 in NYC?
>>=20
>> I have Sprint & Cogent for bandwidth. Everything has been humming =
along for a couple years just fine. Yesterday around 8:00AM my BGP =
session with Cogent flapped. Now, when my Cogent BGP is up I get 100% =
packet loss in level3 land. When Cogent BGP is down (i.e. I=92m running =
solely on Sprint) Everything is fine.
>>=20
>> I have an open ticket with Cogent. They say they have a =91capacity =
issue=92 with level3 that has been escalated to executive levels.
>>=20
>> With Sprint & Cogent BGP UP
>> I see traceroutes showing traffic leaving me on Sprint but returning =
on Cogent (and failing at level3). I=92m guessing it is the =
level3/cogent border
>>=20
>> With Sprint UP & Cogent Down
>> I see trace routes showing traffic on to/from on Sprint just fine.
>>=20
>>=20
>> Anyone else having issues?
>>=20
>> -Matt
>>=20
>> --
>> Matthew S. Crocker
>> President
>> Crocker Communications, Inc.
>> PO BOX 710
>> Greenfield, MA 01302-0710
>>=20
>> E: matthew@crocker.com
>> P: (413) 746-2760
>> F: (413) 746-3704
>> W: http://www.crocker.com
>>=20
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