nick: August 2012 Archives

latency to hosts in sacramento

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Our hosts in Sacramento only have access through Cogent right now, and they seem to be having a network problem causing much higher latency than usual. In this traceroute:
traceroute to coloma.prgmr.com (38.99.2.75), 30 hops max, 60 byte packets
 1  gateway.prgmr.com (216.218.223.65)  0.178 ms  0.154 ms  0.156 ms
 2  gige-g6-4.core1.fmt1.he.net (216.218.217.177)  3.702 ms  4.017 ms  4.228 ms
 3  10gigabitethernet1-1.core1.pao1.he.net (184.105.213.66)  3.941 ms  4.017 ms  2.760 ms
 4  sjo-bb1-link.telia.net (213.248.86.53)  1.446 ms  1.425 ms  1.401 ms
 5  te0-7-0-2.ccr21.sjc03.atlas.cogentco.com (154.54.12.241)  1.873 ms  1.928 ms  2.595 ms
 6  te0-0-0-3.ccr21.sjc01.atlas.cogentco.com (154.54.6.105)  12.318 ms te0-1-0-3.ccr21.sjc01.atlas.cogentco.com (154.54.6.237)  12.382 ms  12.434 ms
 7  154.54.85.29 (154.54.85.29)  12.034 ms te0-2-0-1.mpd21.lax01.atlas.cogentco.com (154.54.6.29)  12.140 ms 154.54.85.25 (154.54.85.25)  12.312 ms
 8  * * *
 9  * * *
10  * * *
11  * * *
12  te2-8.ccr01.slc01.atlas.cogentco.com (154.54.82.221)  65.021 ms te4-2.ccr01.slc01.atlas.cogentco.com (154.54.0.42)  64.844 ms te2-7.ccr01.slc01.atlas.cogentco.com (154.54.82.217)  64.728 ms
13  te7-2.ccr01.boi01.atlas.cogentco.com (154.54.40.94)  64.811 ms te4-2.ccr01.boi01.atlas.cogentco.com (154.54.40.90)  65.138 ms  65.304 ms
14  te4-4.ccr01.pdx02.atlas.cogentco.com (154.54.40.97)  65.281 ms  65.241 ms te7-4.ccr01.pdx02.atlas.cogentco.com (154.54.40.101)  65.155 ms
15  te4-3.ccr01.smf01.atlas.cogentco.com (154.54.40.113)  77.795 ms  77.823 ms  77.860 ms
16  te4-2.mag01.smf01.atlas.cogentco.com (154.54.80.242)  77.774 ms te4-1.mag01.smf01.atlas.cogentco.com (154.54.80.238)  77.997 ms te4-2.mag01.smf01.atlas.cogentco.com (154.54.80.242)  77.864 ms
17  vl3506.na41.b015947-1.smf01.atlas.cogentco.com (38.20.48.58)  79.001 ms  78.975 ms  78.947 ms
18  ripple_web.demarc.cogentco.com (38.112.242.166)  78.546 ms  78.612 ms  79.173 ms
19  coloma.prgmr.com (38.99.2.75)  78.420 ms !X  78.468 ms !X  78.407 ms !X

The traffic ends up going through probably Salt Lake City and Boise to get to Sacramento which would explain the high latency. Hopefully Cogent will get this fixed soon.

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This page is a archive of recent entries written by nick in August 2012.

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