Ethereal-users: Re: [Ethereal-users] port mirroring disables browsing

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From: Ulf Lamping <ulf.lamping@xxxxxx>
Date: Tue, 01 Nov 2005 15:53:20 +0100
Carte, M Elliot wrote:
Sorry if this is a stupid question. I’m using a Dell PowerConnect 2708 and mirroring the uplink port (port 1) to port 8. I then use a laptop on port 8 to monitor traffic on the switch with Ethereal. However, when I do this I can no longer reach the default gateway (access Internet) from the laptop (monitoring port). If I try before I even start Ethereal, I still can’t, so it must be the port mirroring. Does anyone know why this would be? Can you not send and receive your own packets when you’re monitoring another port? Does this happen on other switches, or is it switch-specific? Thanks in advance.
I don't know a lot about this, but see: http://wiki.ethereal.com/SwitchReference/Dell 

You may also add additional infos there, if you find out more ...

Regards, ULFL