[j-nsp] Routing Issue

[Brendan Mannella]

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