Ethereal-users: Re: [Ethereal-users] HowTo determine Speed and Duplex from a Capture

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Thu, 5 Sep 2002 13:01:40 -0700
On Thu, Sep 05, 2002 at 03:50:27PM -0400, Grobard, Gary wrote:
> I would like to obtain the speed and duplex of a given client from a
> capture.

Neither are saved in a capture file.

The only way to determine it would be if there was a packet in the
capture in which the client announced the speed and duplex of one of its
network interfaces; the only sort of network traffic I suspect would
announce that would be

	1) Telnet, rsh, ssh, etc. traffic containing the output of a
	   command reporting that (e.g., ifconfig on many UNIX systems)
	   run on that client;

	2) SNMP traffic querying MIB entries for that information on
	   that client.