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Cogent peering issues between San Jose and San Francisco

  • From: Peter Kranz
  • Date: Tue Feb 28 19:48:49 2006 
Anyone else experiencing this? Paths through Cogent to San Jose are getting
100 ms of latency at p10-0.core01.sjc03.. Its been a daily occurrence for
about a week now. Latency is normal during the day until about 3-4pm when it
starts to rise to 100 ms and stays there until a little after midnight.

traceroute to www.apple.com.akadns.net (17.254.0.91), 30 hops max, 38 byte
packets
�1� 10.Ge1-0-10-Cr01-365m-SFO.unwiredltd.net (204.11.104.4)� 0.454 ms� 0.487
ms� 0.424 ms
�2� g0-8.na21.b007352-0.sfo01.atlas.cogentco.com (38.99.206.145)� 0.452 ms�
0.406 ms� 0.393 ms
�3� t3-4.mpd01.sfo01.atlas.cogentco.com (154.54.3.129)� 0.645 ms� 0.505 ms�
0.479 ms
�4� g3-0-0.core02.sfo01.atlas.cogentco.com (154.54.3.117)� 0.480 ms� 0.418
ms� 0.386 ms
***
�5� p10-0.core01.sjc03.atlas.cogentco.com (66.28.4.133)� 95.705 ms� 89.578
ms� 88.039 ms
***
�6� verio.sjc03.atlas.cogentco.com (154.54.11.246)� 86.466 ms� 84.790 ms�
85.694 ms
�7� xe-0-2-0.r20.snjsca04.us.bb.verio.net (129.250.2.72)� 87.477 ms� 91.883
ms� 112.126 ms
���� MPLS Label=100096 CoS=0 TTL=1 S=1
�8� xe-1-1.r02.snjsca04.us.bb.verio.net (129.250.2.29)� 254.899 ms� 273.583
ms� 204.051 ms
�9� ge-3.internap.snjsca04.us.bb.verio.net (129.250.12.14)� 89.372 ms�
85.061 ms� 87.248 ms
10� border1.ge0-0-bbnet2.sje.pnap.net (66.151.144.68)� 88.441 ms� 91.033 ms�
93.412 ms

traceroute to www.cisco.com (198.133.219.25), 30 hops max, 38 byte packets
�1� 10.Ge1-0-10-Cr01-365m-SFO.unwiredltd.net (204.11.104.4)� 0.468 ms� 0.414
ms� 0.324 ms
�2� g0-8.na21.b007352-0.sfo01.atlas.cogentco.com (38.99.206.145)� 0.500 ms�
0.553 ms� 0.460 ms
�3� t3-4.mpd01.sfo01.atlas.cogentco.com (154.54.3.129)� 0.640 ms� 0.567 ms�
0.527 ms
�4� g3-0-0.core02.sfo01.atlas.cogentco.com (154.54.3.117)� 0.506 ms� 0.470
ms� 0.449 ms
***
�5� p10-0.core01.sjc03.atlas.cogentco.com (66.28.4.133)� 93.822 ms� 94.459
ms� 95.483 ms
***
�6� ex1-p1-1.eqsjca.sbcglobal.net (151.164.248.249)� 96.902 ms� 99.557 ms�
101.810 ms
�7� bb1-p6-0.crscca.sbcglobal.net (151.164.242.229)� 103.717 ms� 103.422 ms�
100.601 ms
�8� bb2-p5-0.pltnca.sbcglobal.net (151.164.43.170)� 114.931 ms� 92.110 ms�
93.101 ms
�9� ded1-8-3-0.pltn13.pbi.net (151.164.191.245)� 220.898 ms

traceroute to www.mci.com (198.4.5.227), 30 hops max, 38 byte packets
�1� 10.Ge1-0-10-Cr01-365m-SFO.unwiredltd.net (204.11.104.4)� 0.923 ms� 0.414
ms� 0.425 ms
�2� g0-8.na21.b007352-0.sfo01.atlas.cogentco.com (38.99.206.145)� 0.456 ms�
0.431 ms� 0.474 ms
�3� t3-4.mpd01.sfo01.atlas.cogentco.com (154.54.3.129)� 0.594 ms� 0.551 ms�
0.474 ms
�4� g3-0-0.core02.sfo01.atlas.cogentco.com (154.54.3.117)� 0.458 ms� 0.443
ms� 0.377 ms
***
�5� p10-0.core01.sjc03.atlas.cogentco.com (66.28.4.133)� 95.815 ms� 92.236
ms� 89.806 ms
***
�6� POS4-3.BR5.SAC1.ALTER.NET (204.255.174.209)� 91.906 ms� 91.998 ms�
92.930 ms
�7� 0.so-2-1-0.XL1.SAC1.ALTER.NET (152.63.52.226)� 94.003 ms� 96.119 ms�
98.381 ms
�8� 0.so-7-0-0.CL1.IAD5.ALTER.NET (152.63.34.142)� 161.592 ms� 165.041 ms�
165.997 ms
�9� 500.ATM4-0.GW2.IAD5.ALTER.NET (152.63.34.173)� 165.745 ms� 163.512 ms

Peter Kranz
Founder/CEO - Unwired Ltd
www.UnwiredLtd.com
Desk: 510-868-1614 x100
Mobile: 510-207-0000
[email protected]