Traceroute question

From: BALAKRISHNAN Balaji (Balaji.BALAKRISHNAN@swift.com)
Date: Tue Jan 22 2008 - 21:01:55 ARST


Group,

I have a question on the traceroute. When doing the traceroute,
intermediate routers sends back the ICMP "time exceeded" reply with its
own source-ip. How the router could correlate this reply to the
original trace route request ?? I could be sending multiple
simultaneous traceroutes ! What is the mechanism used here that makes
router to correlate the icmp exceeded reply coming from an intermediate
router to a specific trace-route request ??

- Bala.



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