Cogent <-> Verizon peering congestion

Edward Roels edwardroels at gmail.com
Wed Feb 5 00:29:56 UTC 2014


I also see major congestion from Cogent to VZ.  Amongst other major
networks.


http://i.imgur.com/1z2ZGOr.png



On Tue, Feb 4, 2014 at 6:44 PM, Robert Glover <robertg at garlic.com> wrote:

> Hello,
>
> For the last several months, we have been tracking a congestion issue
> between Cogent <-> Verizon
>
>  Host Loss%   Snt   Last   Avg  Best  Wrst StDev
>  1. router.garlic.com 0.0%    29    0.3   6.1   0.2 160.6  29.7
>  2. vl203.mag03.sfo01.atlas.cogentco.com 0.0%    29    2.2   8.1   2.1
> 161.1  29.5
>  3. te0-0-0-14.ccr22.sfo01.atlas.cogentco.com 0.0%    29    2.9   2.7
> 2.4   3.6   0.2
>  4. be2165.ccr22.sjc01.atlas.cogentco.com 0.0%    29    4.1   4.0   3.7
> 4.8   0.2
>  5. be2047.ccr21.sjc03.atlas.cogentco.com 0.0%    29    4.5   4.7   4.3
> 5.5   0.3
>  6. verizon.sjc03.atlas.cogentco.com 22.2%    28  169.3 171.5 168.1 193.5
>   6.9
>  7. so-1-0-0-0.SJC01-CORE-RTR2.verizon-gni.net 37.0%    28  205.8 180.6
> 171.6 271.6  24.8
>  8. A12-0-135.SNFCCA-DSL-01.verizon-gni.net 33.3%    28  172.3 177.5
> 171.7 250.8  18.3
>  9. pool-71-116-122-235.snfcca.btas.verizon.net 25.0%    28  197.9 197.6
> 195.5 199.2   0.8
>
> We have smokeping's from our side showing 30%+ packet loss from us
> (AS4307) to Verizon.
>
> All I have gotten from Cogent is a canned response:
>
> ---
> The latency and/or packet loss that you are experiencing to this
> destination is due to occasional high traffic with Verizon. We have
> repeatedly requested augments to these congestion points and hope Verizon
> will comply soon.  While this has been escalated internally to the CEO
> level, we encourage you to also contact Verizon customer support with your
> concerns and complaints.  Their delay is a major impediment to internet
> traffic overall and contrary to net neutrality requirements.  Our peering
> engineers will continue to address this on a daily basis until resolved.
> ---
>
> It seems to have gotten a lot worse in recent days, to the point where we
> have customers who are trying to access us from Verizon's network (i.e.
> they have Verizon DSL, or via Verizon 3G/4GLTE) complaining they are having
> a very hard to checking their email, etc.
>
> Has anyone else been experiencing these issues?  Or does anyone have more
> information that what Cogent provided me in their canned statement?
>
> -Bobby
>
>


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