From: McCallum, Robert (robert.mccallum@thus.net)
Date: Wed May 11 2005 - 10:15:38 GMT-3
routing loop?
Robert McCallum
CCIE #8757 R&S, SP Candidate
> -----Original Message-----
> From: K Sarangan [mailto:K.Sarangan@cwgoindia.com]
> Sent: 11 May 2005 14:12
> To: ccielab@groupstudy.com
> Subject: Help Required on Interpreting Tracert.
>
>
> Hi,
>
>
>
> I need help on the below Tracert messages from a Windows PC.
>
> Iam confused on the two things below:-
>
>
>
> 1) Why Two Next Hops are coming for the same IP. (10.8.98.158).
> Iam not sure what is that since it is a customer network.
>
> 2) Why 10.3.1.40 (last trace) is tracing 4 times. Is it
> because it is
> getting timeouts in the third poll and the fourth time it got
> it reply?
>
>
>
>
>
> 6 831 ms 940 ms * 10.3.1.40
>
> 7 892 ms 874 ms * 10.3.1.40
>
> 8 * 914 ms * 10.3.1.40
>
> 9 743 ms * 854 ms 10.3.1.40
>
>
>
>
>
>
>
>
>
> Traces are shown below:-
>
>
>
>
>
> May 07 19:14 IST
>
> Tracing route to 10.3.1.40 over a maximum of 30 hops
>
>
>
> 1 <1 ms <1 ms <1 ms 172.16.4.251
>
> 2 1 ms <1 ms 1 ms 172.16.1.50
>
> 3 928 ms 881 ms * 10.3.2.89
>
> 4 779 ms * 940 ms 10.8.98.158
>
> 5 888 ms 932 ms 949 ms 10.8.98.158
>
> 6 835 ms 869 ms 929 ms 10.3.1.40
>
>
>
> Trace complete.
>
>
>
> C:\Documents and Settings\shiva>tracert -d 10.3.1.40
>
>
>
> Tracing route to 10.3.1.40 over a maximum of 30 hops
>
>
>
> 1 <1 ms <1 ms <1 ms 172.16.4.251
>
> 2 1 ms 1 ms 1 ms 172.16.1.50
>
> 3 790 ms * 951 ms 10.3.2.89
>
> 4 * 1000 ms 907 ms 10.8.98.158
>
> 5 * 629 ms 551 ms 10.8.98.158
>
> 6 913 ms 1041 ms 823 ms 10.3.1.40
>
>
>
> Trace complete.
>
>
>
> C:\Documents and Settings\shiva>tracert -d 10.3.1.40
>
>
>
> Tracing route to 10.3.1.40 over a maximum of 30 hops
>
>
>
> 1 5 ms <1 ms <1 ms 172.16.4.251
>
> 2 1 ms 1 ms 1 ms 172.16.1.50
>
> 3 * * 617 ms 10.3.2.89
>
> 4 * * 848 ms 10.8.98.158
>
> 5 939 ms 874 ms 881 ms 10.8.98.158
>
> 6 937 ms * 844 ms 10.3.1.40
>
>
>
> Trace complete.
>
>
>
> 19:16 IST
>
> C:\Documents and Settings\shiva>tracert -d 10.3.1.40
>
>
>
> Tracing route to 10.3.1.40 over a maximum of 30 hops
>
>
>
> 1 <1 ms <1 ms <1 ms 172.16.4.251
>
> 2 1 ms <1 ms 1 ms 172.16.1.50
>
> 3 387 ms 385 ms 389 ms 10.3.2.89
>
> 4 384 ms 413 ms 389 ms 10.8.98.158
>
> 5 384 ms 386 ms 396 ms 10.8.98.158
>
> 6 384 ms 430 ms 386 ms 10.3.1.40
>
>
>
> Trace complete.
>
>
>
> 19:17 IST
>
>
>
>
>
> Tracing route to 10.3.1.40 over a maximum of 30 hops
>
>
>
> 1 <1 ms <1 ms <1 ms 172.16.4.251
>
> 2 <1 ms 2 ms 1 ms 172.16.1.50
>
> 3 572 ms 660 ms 838 ms 10.3.2.89
>
> 4 838 ms * 725 ms 10.8.98.158
>
> 5 603 ms 682 ms 823 ms 10.8.98.158
>
> 6 842 ms 817 ms 810 ms 10.3.1.40
>
>
>
> Trace complete.
>
>
>
>
>
> 19:18 IST
>
>
>
> C:\Documents and Settings\shiva>tracert -d 10.3.1.40
>
>
>
> Tracing route to 10.3.1.40 over a maximum of 30 hops
>
>
>
> 1 <1 ms <1 ms <1 ms 172.16.4.251
>
> 2 2 ms <1 ms <1 ms 172.16.1.50
>
> 3 901 ms 959 ms 887 ms 10.3.2.89
>
> 4 909 ms 969 ms 994 ms 10.8.98.158
>
> 5 923 ms 824 ms 958 ms 10.8.98.158
>
> 6 831 ms 940 ms * 10.3.1.40
>
> 7 892 ms 874 ms * 10.3.1.40
>
> 8 * 914 ms * 10.3.1.40
>
> 9 743 ms * 854 ms 10.3.1.40
>
>
>
> Trace complete.
>
>
>
>
>
> Thanks in Advance,
>
>
>
> Sarangan
>
>
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