Cogent peering issues between San Jose and San Francisco

Wed Mar 1 00:45:50 UTC 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
pkranz at unwiredltd.com 