traceroute broken on 5.1A ?

From: rob.leadbeater@lynx.co.uk
Date: Fri Oct 04 2002 - 05:16:36 EDT


Hi managers,

Whilst digging into a network issue, I've noticed that traceroute appears
to be broken on our 5.1A (pk1 and pk2) machines.

If I do a traceroute on one of my wan sites, by IP address, I get a
result, however doing the same thing by name fails:

gs60 # traceroute 192.9.1.120
traceroute to fel34rt001.lynx.co.uk (192.9.1.120): 1-30 hops, 38 byte
packets
 1 spitfire-rd-router2.lynx.co.uk (192.2.1.121) 2.92 ms 2.93 ms 3.90
ms
 2 spitfire-rd-router1.lynx.co.uk (192.2.1.119) 7.81 ms (ttl=255!)
 3.90 ms (ttl=255!) 5.85 ms (ttl=255!)
 3 fel34rt001.lynx.co.uk (192.9.1.120) 28.3 ms (ttl=254!) * 27.3 ms
(ttl=254!)

gs60 # traceroute feltham
traceroute to fel34rt001.lynx.co.uk (192.9.1.120): 1-30 hops, 38 byte
packets
 1 spitfire-rd-router2.lynx.co.uk (192.2.1.121) 2.93 ms * *
 2 * * *
 3 * * *
 4 * *
(interrupt)
gs60 #

I originally thought that it might be a DNS issue somewhere, however,
running traceroute on the name on Tru64 4.0E and various Linux versions
works fine...

Digital UNIX V4.0E (Rev. 1091); Tue Feb 8 15:15:51 GMT 2000
gs40 # traceroute feltham
traceroute to fel34rt001.lynx.co.uk (192.9.1.120), 30 hops max, 40 byte
packets
 1 spitfire-rd-router2 (192.2.1.121) 3 ms 4 ms 2 ms
 2 spitfire-rd-router1 (192.2.1.119) 4 ms 4 ms 6 ms
 3 fel34rt001 (192.9.1.120) 27 ms * 31 ms

Anybody else seen anything like this ?

Regards,

Rob

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