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[vox-tech] traceroute peculiarities
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[vox-tech] traceroute peculiarities



I've been experiencing abnormal slowness on a connection from one of my RedHat servers to Verisign's credit card processing service. Although I haven't yet eliminated the possibility that my code is buggy, the following traceroute output seems to point at Verisign as being the culprit (particularly hops 15-16,22,26-27):
---------------------
traceroute to payflow.verisign.net (216.168.253.140), 30 hops max, 38 byte packets
1 gige-g4-0-9.gsr12012.fmt.he.net (64.71.128.125) 0.303 ms 0.237 ms 0.249 ms
2 pos5-0.gsr12012.pao.he.net (64.62.249.122) 1.697 ms 1.530 ms 1.808 ms
3 ge4-0.mpr2.pao1.us.above.net (209.249.24.129) 1.754 ms 1.490 ms 1.529 ms
4 so-6-1-0.mpr4.sjc2.us.above.net (209.249.0.126) 2.171 ms 2.051 ms 2.242 ms
5 so-1-0-0.pr1.sjc2.us.above.net (64.125.30.86) 2.261 ms 2.295 ms 2.382 ms
6 POS2-1.BR6.SAC1.ALTER.NET (204.255.168.69) 7.485 ms 8.434 ms 12.592 ms
7 0.so-2-0-0.XL2.SAC1.ALTER.NET (152.63.53.6) 8.665 ms 8.761 ms 9.835 ms
8 0.so-0-0-0.XL2.SCL1.ALTER.NET (152.63.55.86) 13.075 ms 9.183 ms 9.348 ms
9 0.so-4-0-0.XR4.SCL1.ALTER.NET (152.63.55.98) 9.898 ms 10.715 ms 11.601 ms
10 194.ATM6-0.GW7.SCL1.ALTER.NET (152.63.52.161) 12.121 ms 8.423 ms 8.076 ms
11-14 * * *
15 verisignCA-gw.customer.alter.net (157.130.212.98) 7.053 ms !X * *
16 verisignCA-gw.customer.alter.net (157.130.212.98) 7.163 ms !X * *
17-21 * * *
22 * verisignCA-gw.customer.alter.net (157.130.212.98) 7.312 ms !X *
23-25 * * *
26 * * verisignCA-gw.customer.alter.net (157.130.212.98) 6.966 ms !X
27 * * verisignCA-gw.customer.alter.net (157.130.212.98) 9.197 ms !X
28-30 * * *
---------------------
Is it *NORMAL* for traceroute to discover the same IP for multiple hops? Obviously, the '!X' on hops 15-16,22,26-27 means that Verisign doesn't *WANT* me to know about their internal network topology... But shouldn't the IP addresses be different?

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