RE: How to make a manual PMTU discovery

["Rob Nicholls" <robert () robnicholls co uk>]

I think Dirk is after a Windows based tool (although he could probably use
Cygwin?). I've not used it, but this Windows tool appears to be similar in
functionality to tracepath:

http://www.elifulkerson.com/projects/mturoute.php

mturoute.exe is a small command line application that uses ICMP pings of
various sizes in order to determine the MTU values on the path between
itself and the target system. It also includes a "traceroute" like mode
where it will attempt to determine the lowest MTU between the local host and
each hop in the communication.

It might be what you're looking for.

Rob

-----Original Message-----
From: nmap-dev-bounces () insecure org [mailto:nmap-dev-bounces () insecure org]
On Behalf Of Vlatko Kosturjak
Sent: 28 January 2010 10:29
To: Wissmann, Dirk
Cc: nmap-dev () insecure org
Subject: Re: How to make a manual PMTU discovery

On Thu, Jan 28, 2010 at 09:36:53AM +0100, Wissmann, Dirk wrote:
> So is there any tool available to do this in a way, like I dream of (I
name the virtual tool "show_pmtu" just to give the example):
> show_pmtu mydesthost
>
> PATH MTU to mydesthost is 512

tracepath is not satisfactory tool? 

excerpt from the man page:
       tracepath,  tracepath6  - traces path to a network host
       discovering MTU along this path

Hope it helps!
-- 
Vlatko Kosturjak - KoSt                                  ICQ: 3631122
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