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John_Butala's avatar
John_Butala
Icon for Nimbostratus rankNimbostratus
Aug 17, 2010

How to avoid using traceroute -I option on servers behind BIGIPs

  traceroute www.f5.com   traceroute to www.f5.com (65.61.115.222), 64 hops max, 52 byte packets   1 * * *   2 * * *   ^C   traceroute -I www.f5.com   traceroute to www.f...
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George_Watkins_'s avatar
George_Watkins_
Historic F5 Account
Aug 17, 2010
Traceroute uses a UDP datagram packet by default. There is a possibility that Qwest may be blocking these packets destined for UDP ports 33434 to 33534. By using the '-I' flag you are telling traceroute to conduct the probe using ICMP echos. It doesn't appear that they are doing anything with ICMP echo requests, so that is why 'traceroute -I' and ping are working.

 

 

-George