Auto Negotiation PC NIC Remotely

Posted on 2012-09-14
Last Modified: 2012-09-24
I have some Windows XP PC's and need to check whether the NIC is set to auto negotiate the speed with the switch or not. How can I do this remotely ?

I cannot view the advanced tab of the NIC remotely through Device Manager, I can see everything else but not that.

I don't want to disturb the users or travel to the site which is 20 miles away.

Any ideas please ?

Question by:Simples
    LVL 35

    Assisted Solution

    by:Ernie Beek
    If you can use a remote registry editor you could find it somewhere in:
    In here you can find the network adapters. The value you are looking for is SpeedDuplex, when it is zero that would mean auto-negotiate.

    Author Comment

    Thanks but I cannot find anything that refers to SpeedDuplex on the XP PC's. I can on Windows 7 but not XP ??
    LVL 57

    Expert Comment

    Double check.  I just looked at my XPSP3 system and its is there.  You may want to go to the reg entry erniebeek posted and then do a find for SpeedDuplex.

    Of course this is based on the assumption that the NIC driver gives you the ability to set the speed and duplex.
    LVL 16

    Accepted Solution

    Under WinXP you may find it is a value called "RequestedMediaType".

    I would recommend you experiment on the same model of PC whilst running Process Monitor to see what the value and data are.
    You want to watch for rundll32.exe doing a RegSetValue when you change from Auto to 100Full, click OK, then go back in and change it back.

    Author Closing Comment

    Thanks both. Sorted.

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