On Mon, Oct 03, 2005 at 12:50:14PM -0500, Kevin Lombardo wrote: > I'm trying to find out if my NIC cards are running at half or full duplex on > Red Hat. If I run dmesg, it reports that it is running at half duplex. If I > run mii-tool, it reports full duplex. > > Which one is correct? I would assume dmesg, but I just want to make sure. I would trust mii-tool over dmesg. mii-tool tells you the current status of the link. dmesg just shows you the kernel message buffer, so you don't really know how old the message is until you look it up in /var/log/message (or equiv). Nate