NYC to DEU packet loss

Tim Durack tdurack at gmail.com
Fri May 4 16:01:57 UTC 2012


Trying to troubleshoot packet loss from NYC to DEU. Traceroute shows:

tdurack at 2ua82715mg:~$ traceroute -I 194.25.250.73
traceroute to 194.25.250.73 (194.25.250.73), 30 hops max, 60 byte packets

 <snip>
 4  216.55.2.85 (216.55.2.85)  1.694 ms  1.698 ms  1.698 ms
 5  vb1010.rar3.nyc-ny.us.xo.net (216.156.0.17)  4.788 ms  4.792 ms  4.791 ms
 6  207.88.14.178.ptr.us.xo.net (207.88.14.178)  1.684 ms  1.461 ms  1.452 ms
 7  62.157.250.245 (62.157.250.245)  40.457 ms  42.980 ms  42.982 ms
 8  hh-eb3-i.HH.DE.NET.DTAG.DE (62.154.32.134)  129.417 ms *  129.422 ms
 9  194.25.250.73 (194.25.250.73)  139.501 ms  136.192 ms  139.236 ms

Packet loss of approx. 20% affects hops 7 and 8, along with end host
9. Loss appears to be data-plane, not control-plane rate limiting.
Affected customer confirms this too :-)

62.157.250.245 is in Deutsche Telekom address spaces, so I'm guessing
this is either a DTAG problem or an issue between XO and DTAG.

I have a ticket open with XO, but I'm having a hard time figuring out
what is ~40ms away from NYC on a path to DEU. Any idea what the
physical path is?

-- 
Tim:>




More information about the NANOG mailing list