When I traceroute to a destination ip address in the network from the router, the last hop to reach the destination has one timed out problem as below
router#traceroute <dest-ip> address
Type escape sequence to abort.
Tracing the route to <dest-ip> address
1 <next-hop> 4 msec * 0 msec
I am just curious and would like to understand the reason for the 2nd probe getting timed out. I am not finding bad links and so wondering why that probe should be dropped. This characteristics, I am seeing in most of the networks and its particularly for the last hop when traced from the router.
Anantha Subramanian Natarajan
I believe that the difference is that the response from the intermediate hop is not destination unreachable but is Time To Live Expired. The IOS does not throttle these messages like it does the destination unreachable messages.