[146482] in North American Network Operators' Group
Re: packet loss out of Texas on Cogent and GlobalCrossing
daemon@ATHENA.MIT.EDU (Charles Gagnon)
Mon Nov 14 15:54:47 2011
In-Reply-To: <03af01cca302$dae14440$90a3ccc0$@truenet.com>
From: Charles Gagnon <charlesg@unixrealm.com>
Date: Mon, 14 Nov 2011 15:52:27 -0500
To: Eric Tykwinski <eric-list@truenet.com>, nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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, =A0maximum hops
are 32,1 =A0 =A0 =A0 0ms =A0 =A0 1ms =A0 =A0 0ms =A0 =A0 74.201.153.2212 =
=A0 =A0 =A0 143ms
10ms =A0 =A00ms =A0 =A0 216.52.95.893 =A0 =A0 =A0 1ms =A0 =A0 1ms =A0 =A0 1=
ms
77.67.70.974 =A0 =A0 =A0 1ms =A0 =A0 1ms =A0 =A0 1ms =A0 =A0 213.200.66.210=
5 =A0 =A0 =A0 3ms
=A0 1ms =A0 =A0 2ms =A0 =A0 66.198.111.976 =A0 =A0 =A0 19ms =A0 =A07ms =A0 =
=A0 7ms
216.6.87.97 =A0 =A0 =A0 7ms =A0 =A0 7ms =A0 =A0 7ms =A0 =A0 216.6.87.28 =A0=
=A0 =A0 6ms
7ms =A0 =A0 7ms =A0 =A0 66.198.154.149 =A0 =A0 =A0 6ms =A0 =A0 7ms =A0 =A0 =
6ms
107.14.19.13210 =A0 =A0 =A0107ms =A0 108ms =A0 113ms =A0 66.109.10.1111 =A0=
=A0 =A0118ms
=A0 144ms =A0 120ms =A0 107.14.17.13912 =A0 =A0 =A0119ms =A0 120ms =A0 120m=
s
72.179.205.5913 =A0 =A0 =A0115ms =A0 115ms =A0 114ms =A0 24.73.240.19514
115ms =A0 115ms =A0 115ms =A0 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@truenet.com> wro=
te:
> 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@unixrealm.com]
> Sent: Monday, November 14, 2011 2:11 PM
> To: nanog@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 fro=
m
> 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 AboveNe=
t
> connections.We only see problems when the traffic goes over gblx or cogen=
t.
> Has anyone heard of problem with these carriers out of Texas?
> --
> Charles Gagnon
> charlesg at unixrealm.com
>
>
>
--=20
Charles Gagnon
charlesg at unixrealm.com
