You have the right idea, just a little backwards!
Cisco IOS traceroute, like unix traceroute is a UDP-based system. It sends
out packets destined to a high UDP port (33434 by default).
Microsoft tracert on the other hand functions just like a ping. It sends
out ICMP echo packets incrementing the TTL in the same fashion.
So depending on access-lists on routers between you and your destination,
you may get very different results (and perhaps different paths) depending
on which box you run the trace from.
Hope that helps!
Scott
-----Original Message-----
From: micky [mailto:micky@apol.com.tw]
Sent: Wednesday, November 28, 2001 5:10 AM
To: cisco-nsp@puck.nether.net
Subject: [nsp] Cisco ios traceroute VS. windows tracert ?
Hi Mr.techs
I have a little confusing about traceroute function between cisco
ios and windows utility
Sometimes I used "tracert -d" x.x.x.x command under windows,it can
go through all nodes and display ip address of all
But using traceroute under IOS,it can goes through all and display *
* *
Somebody told me tracert is UDP-designed,traceroute is ICMP-designed
I don't know if it's real or not ?
Thanks
Micky
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