[j-nsp] Routing Issue

Sat Jul 19 21:20:35 EDT 2008

Well yes and here is more weirdness. I reduced the ip by one and it does all the way. And it even appears to be the same server. 

Thanks, i will shoot these to NANOG next time. Thanks for the suggestion. 

agg1.pit#traceroute 64.14.74.41 
Type Control-c to abort 
Tracing the route to IP node 64.14.74.41 from 1 to 30 hops 

1 <1 ms <1 ms <1 ms 204.16.241.225 
2 7 ms 7 ms 6 ms 64.209.102.233 
3 7 ms 6 ms 6 ms te1-3-10g.ar2.DCA3.gblx.net [67.17.108.145] 
4 6 ms 6 ms 6 ms savvis-1.ar2.DCA3.gblx.net [64.212.107.26] 
5 45 ms 6 ms 7 ms ber1-tenge-2-1.virginiaequinix.savvis.net [204.70.193.6] 
6 14 ms 14 ms 15 ms cr1-tengig0-7-2-0.washington.savvis.net [204.70.197.242] 
7 21 ms 22 ms 23 ms cr1-pos-0-0-0-0.boston.savvis.net [204.70.193.177] 
8 20 ms 19 ms 20 ms hr1-pos-1-0-0.Waltham2bo2.savvis.net [208.172.51.66] 
9 19 ms 20 ms 19 ms csr1-ve242.Waltham1bo1.savvis.net [64.14.70.19] 
10 20 ms 19 ms 19 ms 64.14.67.130 
11 20 ms 20 ms 20 ms s426.sureserver.com [64.14.74.41] 

agg1.pit#traceroute 64.14.74.42 
Type Control-c to abort 
Tracing the route to IP node 64.14.74.42 from 1 to 30 hops 

1 <1 ms <1 ms <1 ms 204.16.241.225 
2 7 ms 6 ms 6 ms 64.209.102.233 
3 7 ms 7 ms 6 ms te2-1-10G.ar2.DCA3.gblx.net [67.17.105.133] 
4 * * * ? 
^C 

Brendan Mannella 
President and CEO 
TeraSwitch Networks Inc. 
Ph: 412-387-3543 
Mobile: 412-592-7848 
Efax: 412-202-7094 

----- Original Message ----- 
From: "Stefan Fouant" <sfouant at gmail.com> 
To: "Brendan Mannella" <bmannella at teraswitch.com>, "juniper-nsp" <juniper-nsp at puck.nether.net> 
Sent: Saturday, July 19, 2008 9:20:26 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [j-nsp] Routing Issue 

Are you certain that Savvis has a route to the network in question? 

For future reference, these types of questions are perfect for the 
NANOG mailing list. 

On 7/19/08, Brendan Mannella <bmannella at teraswitch.com> wrote: 
> Hello, 
> 
> This is more of a general routing question/issue, but hopefully someone can 
> help. This week i have been seeing wierd issues were customers are unable to 
> get to some servers on the internet and its seems that this happens when the 
> route goes through Savvis. 
> 
> For instance. 
> 
> A customer server on my network running a traceroute to 
> mail.tecumsehherald.com gets the following... 
> 
> orange:~>traceroute mail.tecumsehherald.com 
> traceroute to mail.tecumsehherald.com (64.14.74.42) 
> 1 204.16.245.97 (204.16.245.97) 0.580 ms 0.800 ms 1.020 ms 
> 2 204.16.241.225 (204.16.241.225) 0.496 ms 0.478 ms 0.699 ms 
> 3 64.209.102.233 (64.209.102.233) 7.177 ms 7.420 ms 7.417 ms 
> 4 te1-3-10g.ar2.DCA3.gblx.net (67.17.108.145) 7.630 ms 7.870 ms 8.105 ms 
> 5 * * * 
> 6 * * * 
> 
> Now if i go to Global Crossings looking glass and run a trace from their DC 
> router to the same host, it makes it. 
> 
> 1 64.214.14.161 (64.214.14.161) 0.457 ms 0.429 ms 
> 2 te7-1-10G.ar2.DCA3.gblx.net (67.17.109.34) 1.401 ms 1.658 ms 
> 3 savvis-1.ar2.DCA3.gblx.net (64.212.107.26) 1.567 ms 1.339 ms 
> 4 ber1-tenge-2-1.virginiaequinix.savvis.net (204.70.193.6) 1.586 ms 1.511 ms 
> 5 cr1-tengig0-7-2-0.washington.savvis.net (204.70.197.242) 2.367 ms 2.547 ms 
> 6 cr1-pos-0-0-0-0.boston.savvis.net (204.70.193.177) 15.163 ms 15.836 ms 
> 7 hr1-pos-1-0-0.Waltham2bo2.savvis.net (208.172.51.66) 11.702 ms 11.780 ms 
> 8 csr1-ve242.Waltham1bo1.savvis.net (64.14.70.19) 12.202 ms 11.728 ms 
> 9 64.14.67.130 (64.14.67.130) 11.570 ms 11.592 ms 
> 10 ns2.s426.sureserver.com (64.14.74.42) 11.811 ms 11.927 ms 
> 
> With all of my issues this week, the common thing seems to be Savvis. But 
> why would it not work just for my network. Its almost like Savvis is 
> blackholeing traffic from my network, but if i run a traceroute to 
> savvis.net, it goes through. So it only appears to be certain hosts. 
> 
> raceroute to www.savvis.net (216.91.182.78), 30 hops max, 40 byte packets 
> 1 204.16.240.57 (204.16.240.57) 0.538 ms 0.737 ms 0.977 ms 
> 2 204.16.241.225 (204.16.241.225) 0.385 ms 0.438 ms 0.482 ms 
> 3 64.209.102.233 (64.209.102.233) 7.957 ms 7.910 ms 7.865 ms 
> 4 te2-1-10G.ar2.DCA3.gblx.net (67.17.105.133) 7.668 ms 7.112 ms 8.335 ms 
> 5 savvis-1.ar2.DCA3.gblx.net (64.212.107.26) 6.769 ms 6.753 ms 6.695 ms 
> 6 er2-tengig2-1.virginiaequinix.savvis.net (204.70.193.102) 6.934 ms 6.891 
> ms 6.836 ms 
> 7 cr2-tengig0-7-3-0.washington.savvis.net (204.70.197.246) 14.571 ms 14.661 
> ms 14.622 ms 
> 8 cr1-tengig-0-0-5-0.chicago.savvis.net (204.70.195.113) 40.376 ms 40.124 ms 
> 40.660 ms 
> 9 ber1-tengig-9-0-0.Chicago.savvis.net (204.70.195.114) 32.512 ms 32.612 ms 
> 32.488 ms 
> 10 acr1-ge-1-1-0.chicago.savvis.net (204.70.204.206) 32.922 ms 32.904 ms 
> 32.971 ms 
> 11 scr1-stls6.sec.savvis.net (208.172.1.138) 38.814 ms 38.895 ms 38.838 ms 
> 12 64.241.46.5 (64.241.46.5) 38.637 ms 38.584 ms 38.785 ms 
> 
> 
> Does anyone have any ideas? 
> 
> Brendan 
> 
> 
> _______________________________________________ 
> juniper-nsp mailing list juniper-nsp at puck.nether.net 
> https://puck.nether.net/mailman/listinfo/juniper-nsp 
> 

-- 
Sent from Gmail for mobile | mobile.google.com 

Stefan Fouant 
Principal Network Engineer 
NeuStar, Inc. - http://www.neustar.biz 
GPG Key ID: 0xB5E3803D 