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Simple one, this: With a network adapter whose device drivers and associated utilities do not display link details, how do I discover a connection's duplex state if the adapter is set to auto-negotiate? Better yet, how can I do it from the command line?

My Google-fu is weak, it seems. All I can find is other questions but no definitive answers. Even PENetCfg (from Bart) only lets me set the duplex state from the command line, not query it.

Posted: Mon May 05, 2008 10:37 am Post subject:

Can you adapt this batch file which I found here.
http://www2.irobx.net:8010/serendipity/

Code: Select all

@echo off


if {%1}=={} goto :EOF


call :go %1 2>nul


goto :eof





:go


for /f %%i in ('reg query \%1\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}') do (


   


   reg query \%1%%i /v driverdesc |findstr NC7781 1>nul 2>nul


   if not errorlevel 1 @echo NC7781 && @reg query \%1%%i /v RequestedMediaType |findstr RequestedMediaType





   reg query \%1%%i /v driverdesc |findstr NC3163 1>nul 2>nul


   if not errorlevel 1 @echo NC3163 && @reg query \%1%%i /v SpeedDuplex| findstr SpeedDuplex





   reg query \%1%%i /v driverdesc |findstr NC3134 1>nul 2>nul


   if not errorlevel 1 @echo NC3134 && @reg query \%1%%i /v SpeedDuplex| findstr SpeedDuplex





   reg query \%1%%i /v driverdesc |findstr Netelligent 1>nul 2>nul


   if not errorlevel 1    (@echo Netelligent && @reg query \%1%%i /v MediaSpeed| findstr MediaSpeed


             @reg query \%1%%i /v Duplex| findstr Duplex)





   reg query \%1%%i /v driverdesc |findstr NC7131 1>nul 2>nul


   if not errorlevel 1 @echo NC7131 && @reg query \%1%%i /v SpeedDuplex| findstr SpeedDuplex


   


   reg query \%1%%i /v driverdesc |findstr NC7770 1>nul 2>nul


   if not errorlevel 1 @echo NC7770 && @reg query \%1%%i /v RequestedMediaType|findstr RequestedMediaType


   


   reg query \%1%%i /v driverdesc |findstr NC7782 1>nul 2>nul


   if not errorlevel 1 @echo NC7782 && @reg query \%1%%i /v RequestedMediaType|findstr RequestedMediaType


   


)

Posted: Mon May 05, 2008 10:49 am Post subject:

According to what I have read around the web, it is different for each network card.
http://www.tech-archive.net/Archive/Win2000/microsoft.public.win2000.cmdprompt.admin/2004-07/0276.html

Posted: Tue May 06, 2008 3:32 am Post subject:

Bugger.

Ah well. Looks like I'll have to find the relevant Registry keys for each system we use.

Still, thanks for those links; at least now I know the answer.