reachability problems Europe->US?

Heath Jones hj1980 at gmail.com
Thu Oct 7 11:24:25 CDT 2010


It seemed from the symptoms OP was seeing, that Qwest was the issue.
Has GLBX reported to you that they are having a fault? If not, perhaps
try tagging your exported routes to GLBX with 8010 as per this:
http://onesc.net/communities/as3549/



On 7 October 2010 16:59, John van Oppen <jvanoppen at spectrumnet.us> wrote:
> Global crossing is having major issues (since yesterday actually) in Seattle.    Every path I see to dfn.de is via gblx and Microsoft hosts most of those sites out of the seattle area so they may be seeing the same issue.
>
> Based on what we can see gblx has a broken port-channel or something similar here as random traffic (into) their network via our transit link gets black-holed.   We could not even reach global crossing's own name servers for a while.    We gave up and turned down BGP yesterday until we hear from them.   Based on graphs at the time things broke they appeared to be black-holing roughly 1/4 of what we were sending them.
>
>
> Thanks,
> John van Oppen
> Spectrum Networks / AS 11404
>
>
> -----Original Message-----
> From: Thomas Schmid [mailto:schmid at dfn.de]
> Sent: Thursday, October 07, 2010 6:10 AM
> To: Heath Jones
> Cc: nanog at nanog.org
> Subject: Re: reachability problems Europe->US?
>
> Hi,
>
> On 07.10.2010 14:35, Heath Jones wrote:
>>> Seems to be only source-prefix-based, but several ISPs in europe are affected.
>> Can you post source and destination IP's ?
>
> source: 131.220.0.0/16, 212.201.68.0/22, 212.201.72.0/21,
> destination: 65.122.178.73, 63.228.223.104
>
> traceroute to 65.122.178.73 (65.122.178.73), 30 hops max, 40 byte packets
>  1  er-rz-gig-3-3.stw-bonn.de (131.220.99.62)  1.792 ms  1.275 ms  1.125 ms
>  2  xr-bon1-te2-3.x-win.dfn.de (188.1.233.193)  0.705 ms  2.132 ms  0.755 ms
>  3  xr-bir1-te2-3.x-win.dfn.de (188.1.144.9)  1.477 ms  1.936 ms  1.051 ms
>  4  zr-fra1-te0-7-0-5.x-win.dfn.de (188.1.145.46)  4.034 ms  3.734 ms  4.957 ms
>  5  64.213.78.237 (64.213.78.237)  3.866 ms  3.295 ms  26.854 ms
>  6  jfk-brdr-04.inet.qwest.net (63.146.26.225)  119.511 ms  92.735 ms  99.019 ms
>  7  * * *
>
> or quote from DE-CIX tech-list:
>
> [www.microsoft.com]
> -----------
> We also have some connectivity problems to ms, changing the bgp routing to
> another tier 1 carrier don t resolve the problem
> -----------
>
> Cheers,
>
>  Thomas
>
>




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