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<title>RE: [outages] routing loop in cogent?</title>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Might helpful to call the ISP (<a
href="http://www.lightlink.com/light.html">http://www.lightlink.com/light.html</a>)
and ask the person to trace back to you and see if they seem the same thing.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>If 205.232.34.1 is their DNS server, it doesn’t match what’s
in the DNS for lightlink.com. They also might considering renaming the
reverse for this DNS server to something that makes a bit more sense than 205.232.34.1.lightlink.com.
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Frank<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
outages-bounces@isotf.org [mailto:outages-bounces@isotf.org] <b>On Behalf Of </b>Josh
Fiske<br>
<b>Sent:</b> Monday, June 23, 2008 9:04 PM<br>
<b>To:</b> Darrell Hyde; outages@isotf.org<br>
<b>Subject:</b> Re: [outages] routing loop in cogent?<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p style='margin-bottom:12.0pt'><span style='font-size:10.0pt'>Complete
traceroute for the interested... (FWIW, 205.232.34.1 is the DNS for a
small ISP in central NY.) At this point, I cannot determine whether they
have dropped off the map or whether Cogent is just mis-routing traffic...I
don't have another host on the other side of Cogent's cloud to trace to.<br>
<br>
$ traceroute 205.232.34.1<br>
traceroute to 205.232.34.1 (205.232.34.1), 64 hops max, 40 byte packets<br>
1 192.168.1.1 (192.168.1.1) 1.205 ms 0.899 ms
0.744 ms<br>
2 10.101.32.1 (10.101.32.1) 9.872 ms 12.886 ms
8.218 ms<br>
3 gig0-0.syrcnypth-rtr01.nyroc.rr.com (24.92.227.102) 8.842
ms 7.082 ms 7.968 ms<br>
4 gig6-3.syrcnypth-rtr02.nyroc.rr.com (24.92.230.74) 8.523
ms 8.358 ms 22.373 ms<br>
5 gig1-0-7.syrcnyflk-rtr02.nyroc.rr.com (24.92.227.42) 12.746
ms 12.645 ms 13.085 ms<br>
6 * ge-4-3-0.albynywav-rtr03.nyroc.rr.com (24.24.7.53) 22.296
ms 23.362 ms<br>
7 ae-5-0.cr0.nyc30.tbone.rr.com (66.109.6.74) 24.973 ms
25.460 ms 25.236 ms<br>
8 ae-1-0.pr0.nyc20.tbone.rr.com (66.109.6.163) 26.920
ms 27.645 ms 28.417 ms<br>
9 te2-1.mpd01.jfk05.atlas.cogentco.com (154.54.13.185) 27.786
ms 28.297 ms 28.696 ms<br>
10 vl3496.mpd03.jfk02.atlas.cogentco.com (154.54.6.49) 28.706 ms
vl3491.ccr04.jfk02.atlas.cogentco.com (154.54.7.9) 29.195 ms
vl3496.mpd03.jfk02.atlas.cogentco.com (154.54.6.49) 30.475 ms<br>
11 te4-1.ccr01.jfk07.atlas.cogentco.com (154.54.7.30) 28.199
ms 27.434 ms 28.647 ms<br>
12 paetec_communications_inc.dmarc.cogentco.com (38.112.26.90)
29.272 ms 30.293 ms 28.723 ms<br>
13 gi-1-0-1-13.core01.nycmny01.paetec.net (66.155.218.97) 28.767
ms 30.290 ms 29.108 ms<br>
14 64.80.253.234 (64.80.253.234) 27.571 ms 29.827 ms
28.415 ms<br>
15 ge-1-3-0.core02.nycmny03.paetec.net (64.80.253.98) 29.724
ms 27.800 ms 28.632 ms<br>
16 as1.core02.asbnva01.paetec.net (169.130.81.230) 37.043 ms
44.398 ms 86.877 ms<br>
17 so-0-1-0.core01.asbnva01.paetec.net (169.130.81.85) 36.541
ms 36.753 ms 35.901 ms<br>
18 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 33.438
ms 34.282 ms 33.746 ms<br>
19 uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.553 ms
35.728 ms 38.174 ms<br>
20 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.176
ms 33.785 ms 33.844 ms<br>
21 uslec.iad01.atlas.cogentco.com (154.54.11.214) 102.015 ms
37.123 ms 37.943 ms<br>
22 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.138
ms 34.589 ms 34.388 ms<br>
23 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.982 ms
37.857 ms<br>
24 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 36.449
ms 35.107 ms 34.794 ms<br>
25 uslec.iad01.atlas.cogentco.com (154.54.11.214) 37.972 ms
36.947 ms 38.100 ms<br>
26 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 33.736
ms 33.483 ms *<br>
27 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.605 ms
37.762 ms<br>
28 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 37.073
ms 34.558 ms 36.043 ms<br>
29 *^C<br>
<br>
<br>
- - - -<br>
Joshua Fiske '03, '04<br>
Network and Security Engineer<br>
Clarkson University, Office of Information Technology<br>
(315) 268-6722 -- Fax: (315) 268-6570<br>
GPG Key: <a href="http://clarkson.edu/~jfiske/jfiske_pub.asc">http://clarkson.edu/~jfiske/jfiske_pub.asc</a><br>
jfiske@clarkson.edu<br>
<br>
CONFIDENTIALITY: This e-mail (including any attachments) may contain
confidential, proprietary and privileged information, and unauthorized
disclosure or use is prohibited. If you received this e-mail in error,
please notify the sender and delete this e-mail from your system.<br>
<br>
<br>
<br>
-----Original Message-----<br>
From: outages-bounces@isotf.org on behalf of Darrell Hyde<br>
Sent: Mon 6/23/2008 9:47 PM<br>
To: outages@isotf.org<br>
Subject: Re: [outages] routing loop in cogent?<br>
<br>
Are you able to share what IP you're tracing to?<br>
________________________________________<br>
From: outages-bounces@isotf.org [outages-bounces@isotf.org] On Behalf Of Josh
Fiske [jfiske@clarkson.edu]<br>
Sent: Monday, June 23, 2008 9:39 PM<br>
To: outages@isotf.org<br>
Subject: [outages] routing loop in cogent?<br>
<br>
Is anyone else seeing some routing loops in Cogent's network?<br>
<br>
ala:<br>
<br>
...<br>
18 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.475
ms 36.336 ms 34.087 ms<br>
19 uslec.iad01.atlas.cogentco.com (154.54.11.214) 39.286 ms
38.188 ms 37.530 ms<br>
20 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 33.148
ms 37.066 ms 35.823 ms<br>
21 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 38.403 ms
37.534 ms<br>
22 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.051
ms 33.120 ms 34.209 ms<br>
23 uslec.iad01.atlas.cogentco.com (154.54.11.214) 39.112 ms * *<br>
24 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.603
ms 34.994 ms 34.119 ms<br>
25 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.929 ms
38.443 ms<br>
26 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.784
ms 35.317 ms 33.839 ms<br>
27 uslec.iad01.atlas.cogentco.com (154.54.11.214) 37.185 ms
38.327 ms 39.863 ms<br>
28 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.362
ms 36.451 ms 34.788 ms<br>
29 uslec.iad01.atlas.cogentco.com (154.54.11.214) 38.600 ms
39.782 ms 40.031 ms<br>
30 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 38.156
ms 39.726 ms 35.726 ms<br>
31 uslec.iad01.atlas.cogentco.com (154.54.11.214) 47.281 ms
37.617 ms 49.460 ms<br>
32 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.389
ms 35.988 ms 35.609 ms<br>
33 uslec.iad01.atlas.cogentco.com (154.54.11.214) 39.162 ms
121.744 ms^C<br>
<br>
<br>
- - - -<br>
Joshua Fiske '03, '04<br>
Network and Security Engineer<br>
Clarkson University, Office of Information Technology<br>
(315) 268-6722 -- Fax: (315) 268-6570<br>
GPG Key: <a href="http://clarkson.edu/~jfiske/jfiske_pub.asc">http://clarkson.edu/~jfiske/jfiske_pub.asc</a><br>
jfiske@clarkson.edu<br>
<br>
CONFIDENTIALITY: This e-mail (including any attachments) may contain
confidential, proprietary and privileged information, and unauthorized
disclosure or use is prohibited. If you received this e-mail in error,
please notify the sender and delete this e-mail from your system.<br>
<br>
<br>
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