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I'm looking to test, on a large number of servers, whether or not the duplex settings on the network interfaces have been set up properly.

Is there a tool, or set of scripts, which I can run against the servers, to test their settings?

The servers in question are Windows 2003 and windows 2008 machines.

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up vote 1 down vote accepted

Duplex setting is very eratic with regards to scripting support. Some vendors (such as Intel) give a WMI provider that gives it, others write to the registry and text files blah blah blah. You can get link speed pretty reliably, but duplex settings can be problematic.

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I wonder if this might be more reliable through SNMP. – John Gardeniers Jan 5 '10 at 22:48
I'm looking for any automated test, really, which can reliably tell me whether the connection is set to full-duplex. – blueberryfields Jan 5 '10 at 22:52
You're going to have a lot better luck getting that from the switch than from Windows thanks to, as squillman says, NIC driver inconsistency. – Evan Anderson Jan 6 '10 at 0:53

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