duplex status question

  • Thread starter Thread starter Greg
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Greg

Is there a way in command prompt that I could see the duplex status of my NIC
card?

Thanks in advance
 
Is there a way in command prompt that I could see the duplex status of myNIC
card?

Thanks in advance
Click to expand...

I depends on the NIC card and the drivers, which you did not specify
(please do).

You should start by checking the connection Properites through Control
Panel and see if they are even something you can view and configure
with the setup you have, or are they automatic?

Right click on your network connection and click "Properties". Then
at the top of the Connection Properties page, click on the "Configure"
button. Then click on the "Advanced" tab.

The settings for speed and duplex (if they can be viewed/changed via
the driver) will be found there.

If you don't see them, you probably can't change them on the setup you
have, may not be able to query them from a command prompt (why ask/
display things you cannot change?) so you will have to dig deeper into
the NIC hardware/driver manufactures to find out more.
 
Is there a way in command prompt that I could see the duplex status of myNIC
card?

Thanks in advance
Click to expand...

From a command prompt:

ipconfig /all

will reveal the current settings, but the results may be different on
some systems.
 
Greg said:
Is there a way in command prompt that I could see the duplex status of my NIC
card?
Click to expand...

Hi Greg,

The short answer is, "I dunno". But, let me expand on that .... :-)

I won't say it's utterly impossible; but it may not be easy, either. The
reason is that Full/Half Duplex behaviour is controlled by the network
card's miniport driver - this is the bit which is supplied by the
manufacturer of the network card, rather than being a standard Windows
component (such as the NDIS Driver, for example). There's just no
standard interface to query in the miniport driver, to see whether
duplex is on off or non-existent.

Depending on the network card in question, it may be possible to set and
get the duplex status using WMI or SNMP - if the OEM installs a MIB or
WMI Provider, along with the driver. Some high-end server cards do this,
because the machine has to be managed remotely in a data centre. But I
think it is pretty rare for desktop cards, and even less common for
built-in, on-the-motherboard NICs.

Is there a specific problem that you're trying to solve? There may be
other solutions ...

Hope this helps a bit,

Andrew
 
Greg said:
Is there a way in command prompt that I could see the duplex status of my
NIC
card?

Thanks in advance
Click to expand...

Further to Andrew's reply: If you can find out where in the registry the
duplex mode is reflected then you can extract this information with
regedit.exe. It is likely that you need to extract it from a different
location for each type of adapter.
 
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