I'm trying to figure it out how to detect whether it's auto detect,
full duplex, or half duplex.  We have more than 50 servers that are
configured as 100MB full duplex, but few of the servers changes to
auto detect after rebooting the servers.  I know a way to find out the
speed of the network interface using CIM_NetworkAdapter method, but
this doesn't help me to know whether it's 100MB full or auto detect.

Anyone have any idea?

Thanks