AS 701 problems in Chicago ?
Mike Tancsa
mike at sentex.net
Tue Oct 17 02:32:19 UTC 2006
Anyone know whats up ? I have seen some strange routing depending on
the payload's protocol to a site in one of their colos in Toronto.
e.g. all tcp packets are making to the host
marble# traceroute -s 199.212.134.2 -Ptcp ITMsite.sentex.ca
traceroute to ITMsite.sentex.ca (209.167.35.xx), 64 hops max, 56 byte packets
1 iolite4-fxp2 (199.212.134.10) 0.124 ms 0.101 ms 0.097 ms
2 allstream-vl108 (67.43.129.246) 5.663 ms 5.443 ms 5.580 ms
3 216.191.68.65 (216.191.68.65) 6.997 ms 6.050 ms 6.667 ms
4 65.195.241.149 (65.195.241.149) 17.438 ms 17.448 ms 18.513 ms
5 0.so-1-0-0.XL2.CHI1.ALTER.NET (152.63.70.70) 18.040 ms 17.950
ms 18.198 ms
6 0.so-0-0-0.TL2.CHI2.ALTER.NET (152.63.68.89) 18.476 ms 18.442
ms 20.224 ms
7 0.so-6-0-0.TL2.TOR2.ALTER.NET (152.63.0.201) 38.112 ms 34.369
ms 34.827 ms
8 0.so-1-0-0.XL2.TOR2.ALTER.NET (152.63.3.90) 37.353 ms 37.305
ms 36.856 ms
9 POS7-0.GW4.TOR2.ALTER.NET (152.63.131.141) 40.099 ms 36.807
ms 35.595 ms
10 enoo3-gw.customer.alter.net (205.150.100.214) 43.112 ms 41.565
ms 41.931 ms
^C
But other protocols (UDP, ICMP and most importantly for us, ESP) are hosed.
marble# traceroute -s 199.212.134.2 -Pesp ITMsite.sentex.ca
traceroute to ITMsite.sentex.ca (209.167.35.xx), 64 hops max, 40 byte packets
1 iolite4-fxp2 (199.212.134.10) 0.120 ms 0.097 ms 0.093 ms
2 allstream-vl108 (67.43.129.246) 5.460 ms 5.303 ms 5.524 ms
3 216.191.68.65 (216.191.68.65) 6.563 ms 6.289 ms 6.211 ms
4 65.195.241.149 (65.195.241.149) 18.219 ms 17.612 ms 17.991 ms
5 0.so-1-0-0.XL2.CHI1.ALTER.NET (152.63.70.70) 17.587 ms 17.629
ms 18.492 ms
6 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 26.075 ms 18.130
ms 18.879 ms
7 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 17.981 ms 18.160
ms 18.516 ms
8 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 19.138 ms 18.356
ms 18.593 ms
9 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 18.677 ms 18.477
ms 17.973 ms
10 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 19.088 ms 18.936
ms 18.692 ms
11 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 18.841 ms 18.308
ms 18.996 ms
12 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 18.362 ms 18.645
ms 18.584 ms
13 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 18.329 ms 18.125
ms 18.890 ms
14 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 18.583 ms 18.635
ms 18.933 ms
15 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 46.420 ms 19.088
ms 18.217 ms
16 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 62.137 ms 18.515
ms 18.349 ms
17 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 18.243 ms 18.558
ms 18.404 ms
18 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 18.506 ms 18.568
ms 19.341 ms
19 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 18.724 ms 19.178
ms 18.367 ms
20 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 18.644 ms 18.321
ms 18.545 ms
21 0.so-0-0-0.XL2.CHI4.ALTER.NET (152.63.13.33) 19.225 ms 18.410
ms 18.596 ms
22 0.so-0-0-0.TL2.CHI4.ALTER.NET (152.63.13.34) 18.758 ms 20.040
ms 18.488 ms
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike at sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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