Weird Traceroute Issue

Unanswered Question
Oct 30th, 2008

Hi all,

i came across this weird issue and can't seem to find out what's wrong yet, figured i'd get opinion from u guys outhere.

Pls refer to the topology. Router5 link to Router3 is shutdown, forcing packets to route via Router1 btw router3 & router5. Now, when i do a traceroute from router1 (src: loopback100 - 1.1.3.3) >router5 (loopback100 - 1.1.5.5) i seem to get timeout when hitting router1. However, when i use the "traceroute mpls ipv4" i have no issues, and the lsp path is good. I have also tested from router1 to router5 (since it's directly connected) but it gets timedout as well. Pls refer to the attached configs and some traceroute results at the end of the "show run".

Appreciate any clues..Thanks in advance.

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