[Nanog] Cogent Router dropping packets

Martin Hannigan hannigan at gmail.com
Sat Apr 19 18:18:03 CDT 2008


It is Saturday after all. We generally are all aware of Cogents
'status'.  You're not having a unique experience.

Martin



On 4/18/08, Mike Fedyk <mike at reachme.com> wrote:
> (Crossed Fingers)
>
> Cogent's network seems "OK", for now.
>
> I've received several responses asking for details on how I would avoid
> Cogent.  It looks like getting a connection to the AT&T network will allow
> us to serve our customers on their DSLS and use their direct peering to the
> Time Warner network for our customers with cable Internet.
>
> If anyone has any ideas on how this will work, please let me know.  For
> instance, do most networks prefer to keep packets on their network until
> closest to the end point or might a network just send the traffic through
> cogent in another part of their network a few hops away?
>
> -----Original Message-----
> From: Mike Fedyk
> Sent: Thursday, April 17, 2008 2:59 PM
> To: nanog at merit.edu
> Subject: RE: Cogent Router dropping packets
>
>
> I spoke too soon:
>
>  Host                                              Loss%   Snt   Last   Avg
> Best  Wrst StDev
>  1. adsl-63-194-XXX-XXX.dsl.lsan03.pacbell.net      0.0%   109    9.2  19.2
> 8.4  57.9  11.0
>  2. dist3-vlan60.irvnca.sbcglobal.net               0.9%   109    8.4  16.7
> 8.3  45.6   9.6
>  3. bb1-p6-7.emhril.ameritech.net                   0.0%   109    8.6  36.3
> 8.5 256.6  44.2
>  4. ex2-p14-0.eqlaca.sbcglobal.net                  0.0%   109   10.3  39.4
> 9.3 209.3  46.2
>  5. te8-1.mpd01.lax05.atlas.cogentco.com            0.0%   108   32.4  34.3
> 9.3 238.6  45.1
>  6. vl3491.ccr02.lax01.atlas.cogentco.com           3.7%   108   17.0  23.4
> 12.9  98.9  13.4
>  7. te3-4.ccr01.lax04.atlas.cogentco.com           17.6%   108   39.1  28.8
> 16.4 198.9  22.1
>  8. vl3805.na21.b002695-2.lax04.atlas.cogentco.com 12.0%   108   34.1  27.6
> 17.0  68.7  11.2
>  9. PAETEC_Communications_Inc.demarc.cogentco.com  10.2%   108   22.4  35.3
> 17.0 168.7  27.8
> 10. gi-4-0-1-3.core01.lsajca01.paetec.net          18.5%   108   21.2  34.2
> 21.0 188.6  20.6
> 11. po-5-0-0.core01.anhmca01.paetec.net            10.3%   108   35.7  33.9
> 20.5 232.7  23.9
> 12. gi-3-0-0.edge03.anhmca01.paetec.net            13.0%   108   21.0  31.6
> 20.2 157.9  16.6
> 13. 74.10.xxx.xxx                                   11.1%   108   25.7  33.9
> 25.2  55.2   8.9
> 14. 74.10.xxx.xxx                                   15.7%   108   26.7  35.7
> 25.0  70.8  11.7
>
>
> -----Original Message-----
> From: Mike Fedyk
> Sent: Thursday, April 17, 2008 2:15 PM
> To: Ryan Harden
> Cc: nanog at merit.edu
> Subject: RE: Cogent Router dropping packets
>
>
> Thank you, the issue seems to be fixed now at Cogent.
>
>
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