Most versions of traceroute (including Cisco's I believe) use UDP echo
packets rather than ICMP echo. There may be a router or a firewall that is
blocking the UDP echoes while allowing the ICMP echoes through. Microsoft's
tracert command in Windows 95/98 uses ICMP. You might want to try the same
test from a Windows PC and see what you get.
Rick
-----Original Message-----
From: Sim, CT (Chee Tong) [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 04, 2000 4:05 AM
To: [EMAIL PROTECTED]
Subject: why can ping but traceroute stop half way
Hi..Dear all,
i wonder why I can ping to a site but when I do a traceroute stop half way..
I thought traceroute are based on ICMP as well?? See below
sin-uunet>ping 210.24.136.242
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 210.24.136.242, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/96/156 ms
sin-uunet>traceroute 210.24.136.242
Type escape sequence to abort.
Tracing the route to 210.24.136.242
1 Loopback0.GW2.SIN1.Alter.Net (210.80.0.25) 12 msec 12 msec 12 msec
2 322.ATM5-0-0.XR2.SIN1.Alter.Net (210.80.3.65) 8 msec 12 msec 8 msec
3 412.ATM8-0-0.GW1.SIN1.Alter.Net (210.80.3.62) 12 msec 12 msec 8 msec
4 202.95.96.30 20 msec 16 msec 16 msec
5 scipk017.pacific.net.sg (203.120.90.17) 12 msec 16 msec 16 msec
6 202.42.42.234 20 msec 92 msec 36 msec
7 * * *
8 * * *
9 * * *
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