Might helpful to call the ISP (http://www.lightlink.com/light.html) and ask the person to trace back to you and see if they seem the same thing. 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. Frank From: outages-bounces@isotf.org [mailto:outages-bounces@isotf.org] On Behalf Of Josh Fiske Sent: Monday, June 23, 2008 9:04 PM To: Darrell Hyde; outages@isotf.org Subject: Re: [outages] routing loop in cogent? 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. $ traceroute 205.232.34.1 traceroute to 205.232.34.1 (205.232.34.1), 64 hops max, 40 byte packets 1 192.168.1.1 (192.168.1.1) 1.205 ms 0.899 ms 0.744 ms 2 10.101.32.1 (10.101.32.1) 9.872 ms 12.886 ms 8.218 ms 3 gig0-0.syrcnypth-rtr01.nyroc.rr.com (24.92.227.102) 8.842 ms 7.082 ms 7.968 ms 4 gig6-3.syrcnypth-rtr02.nyroc.rr.com (24.92.230.74) 8.523 ms 8.358 ms 22.373 ms 5 gig1-0-7.syrcnyflk-rtr02.nyroc.rr.com (24.92.227.42) 12.746 ms 12.645 ms 13.085 ms 6 * ge-4-3-0.albynywav-rtr03.nyroc.rr.com (24.24.7.53) 22.296 ms 23.362 ms 7 ae-5-0.cr0.nyc30.tbone.rr.com (66.109.6.74) 24.973 ms 25.460 ms 25.236 ms 8 ae-1-0.pr0.nyc20.tbone.rr.com (66.109.6.163) 26.920 ms 27.645 ms 28.417 ms 9 te2-1.mpd01.jfk05.atlas.cogentco.com (154.54.13.185) 27.786 ms 28.297 ms 28.696 ms 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 11 te4-1.ccr01.jfk07.atlas.cogentco.com (154.54.7.30) 28.199 ms 27.434 ms 28.647 ms 12 paetec_communications_inc.dmarc.cogentco.com (38.112.26.90) 29.272 ms 30.293 ms 28.723 ms 13 gi-1-0-1-13.core01.nycmny01.paetec.net (66.155.218.97) 28.767 ms 30.290 ms 29.108 ms 14 64.80.253.234 (64.80.253.234) 27.571 ms 29.827 ms 28.415 ms 15 ge-1-3-0.core02.nycmny03.paetec.net (64.80.253.98) 29.724 ms 27.800 ms 28.632 ms 16 as1.core02.asbnva01.paetec.net (169.130.81.230) 37.043 ms 44.398 ms 86.877 ms 17 so-0-1-0.core01.asbnva01.paetec.net (169.130.81.85) 36.541 ms 36.753 ms 35.901 ms 18 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 33.438 ms 34.282 ms 33.746 ms 19 uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.553 ms 35.728 ms 38.174 ms 20 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.176 ms 33.785 ms 33.844 ms 21 uslec.iad01.atlas.cogentco.com (154.54.11.214) 102.015 ms 37.123 ms 37.943 ms 22 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.138 ms 34.589 ms 34.388 ms 23 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.982 ms 37.857 ms 24 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 36.449 ms 35.107 ms 34.794 ms 25 uslec.iad01.atlas.cogentco.com (154.54.11.214) 37.972 ms 36.947 ms 38.100 ms 26 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 33.736 ms 33.483 ms * 27 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.605 ms 37.762 ms 28 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 37.073 ms 34.558 ms 36.043 ms 29 *^C - - - - Joshua Fiske '03, '04 Network and Security Engineer Clarkson University, Office of Information Technology (315) 268-6722 -- Fax: (315) 268-6570 GPG Key: http://clarkson.edu/~jfiske/jfiske_pub.asc jfiske@clarkson.edu 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. -----Original Message----- From: outages-bounces@isotf.org on behalf of Darrell Hyde Sent: Mon 6/23/2008 9:47 PM To: outages@isotf.org Subject: Re: [outages] routing loop in cogent? Are you able to share what IP you're tracing to? ________________________________________ From: outages-bounces@isotf.org [outages-bounces@isotf.org] On Behalf Of Josh Fiske [jfiske@clarkson.edu] Sent: Monday, June 23, 2008 9:39 PM To: outages@isotf.org Subject: [outages] routing loop in cogent? Is anyone else seeing some routing loops in Cogent's network? ala: ... 18 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.475 ms 36.336 ms 34.087 ms 19 uslec.iad01.atlas.cogentco.com (154.54.11.214) 39.286 ms 38.188 ms 37.530 ms 20 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 33.148 ms 37.066 ms 35.823 ms 21 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 38.403 ms 37.534 ms 22 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.051 ms 33.120 ms 34.209 ms 23 uslec.iad01.atlas.cogentco.com (154.54.11.214) 39.112 ms * * 24 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.603 ms 34.994 ms 34.119 ms 25 * uslec.iad01.atlas.cogentco.com (154.54.11.214) 36.929 ms 38.443 ms 26 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 34.784 ms 35.317 ms 33.839 ms 27 uslec.iad01.atlas.cogentco.com (154.54.11.214) 37.185 ms 38.327 ms 39.863 ms 28 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.362 ms 36.451 ms 34.788 ms 29 uslec.iad01.atlas.cogentco.com (154.54.11.214) 38.600 ms 39.782 ms 40.031 ms 30 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 38.156 ms 39.726 ms 35.726 ms 31 uslec.iad01.atlas.cogentco.com (154.54.11.214) 47.281 ms 37.617 ms 49.460 ms 32 gi9-16.mpd01.iad01.atlas.cogentco.com (154.54.11.213) 35.389 ms 35.988 ms 35.609 ms 33 uslec.iad01.atlas.cogentco.com (154.54.11.214) 39.162 ms 121.744 ms^C - - - - Joshua Fiske '03, '04 Network and Security Engineer Clarkson University, Office of Information Technology (315) 268-6722 -- Fax: (315) 268-6570 GPG Key: http://clarkson.edu/~jfiske/jfiske_pub.asc jfiske@clarkson.edu 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. _______________________________________________ outages mailing list outages@isotf.org https://puck.nether.net/mailman/listinfo/outages