packet loss out of Texas on Cogent and GlobalCrossing

Charles Gagnon charlesg at unixrealm.com
Mon Nov 14 20:52:27 UTC 2011


Good point, I can't seem to reproduce with the looking glass
interfaces out there. They either don't use enough packets in sequence
or don't through the problem hops. On this path:

Send ICMP echos to 24.227.216.194, timeout is 2 seconds,  maximum hops
are 32,1       0ms     1ms     0ms     74.201.153.2212       143ms
10ms    0ms     216.52.95.893       1ms     1ms     1ms
77.67.70.974       1ms     1ms     1ms     213.200.66.2105       3ms
  1ms     2ms     66.198.111.976       19ms    7ms     7ms
216.6.87.97       7ms     7ms     7ms     216.6.87.28       6ms
7ms     7ms     66.198.154.149       6ms     7ms     6ms
107.14.19.13210      107ms   108ms   113ms   66.109.10.1111      118ms
  144ms   120ms   107.14.17.13912      119ms   120ms   120ms
72.179.205.5913      115ms   115ms   114ms   24.73.240.19514
115ms   115ms   115ms   24.73.240.252
I re-tested and using 100 msg counts, I get 3-6% packet loss on
anything after 10. On hops 1-10, I'm all clean. That 66.109.10.11
address is inside TimeWarner/RR so I'll keep trying to contact them.


On Mon, Nov 14, 2011 at 2:23 PM, Eric Tykwinski <eric-list at truenet.com> wrote:
> Have you check the relevant looking glass sites?
>
> http://www.cogentco.com/en/network/looking-glass
> http://www.globalcrossing.com/network/network_looking_glass.aspx
>
> We are connected to both providers, so everything is looking clean for us.
>
> Sincerely,
>
> Eric Tykwinski
> TrueNet, Inc.
> P: 610-429-8300
> F: 610-429-3222
>
> -----Original Message-----
> From: Charles Gagnon [mailto:charlesg at unixrealm.com]
> Sent: Monday, November 14, 2011 2:11 PM
> To: nanog at nanog.org
> Subject: packet loss out of Texas on Cogent and GlobalCrossing
>
> I need the Nanog intellect,
>
> We are seeing packet loss in certain scenarios only on traffic to and from
> Austin, TX. The local provider is Time Warner and they are not having
> (obvious) problems. We ran tests from NY and NJ over Internap and AboveNet
> connections.We only see problems when the traffic goes over gblx or cogent.
> Has anyone heard of problem with these carriers out of Texas?
> --
> Charles Gagnon
> charlesg at unixrealm.com
>
>
>



-- 
Charles Gagnon
charlesg at unixrealm.com




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