Wireshark-users: Re: [Wireshark-users] Understanding what I'm seeing
From: "Giles Coochey" <gcoochey@xxxxxxxxxxx>
Date: Wed, 10 Oct 2007 16:43:09 +0200
> I'm currently using version 0.99.6 on a Windows platform.
> 
> I have the following configuration set up on my Cisco 3560 switch.
> 
> monitor session 1 source interface Gi0/21 (Windows XP Desktop)
> monitor session 1 destination interface Gi0/22 (Windows XP Laptop
> w/Wireshark application)
> 

The Cisco side seems OK to me.

Are both sides set to auto-negotiate speed and duplex? Try hard-coding
the ports (on switch and laptop) to their best settings.