Cogent <-> Verizon peering congestion

James Laszko jamesl at mythostech.com
Wed Feb 5 00:47:48 UTC 2014


Yep.  Major oversub in our area (LA/SD) - worse for us is same with VZ <-> L3!


James Laszko
Mythos Technology Inc
jamesl at mythostech.com 

Sent from my iPhone

> On Feb 4, 2014, at 3:46 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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