I was informed the mii-tool will do it. I have Intel nics, and it seems that
when I am able to force them to the correct duplex as my switch, they run
better. It seems that between the NIC and my HP switch it is best to
manually change the duplex to whatever the port on the switch is set to. I
know that auto detect usually works pretty good on Linux but according to HP
support it was a good idea to change it. I can easily change it on a windows
box but I didn't know an easy way to change it in Redhat. It would be nice
to be able to change it in the network config gui.(for anyone from RedHat)


Thanks for the help Jeff.

-----Original Message-----
From: Gordon Messmer [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, March 05, 2003 7:15 PM
To: [EMAIL PROTECTED]
Subject: Re: NIC duplex

Don Leeper wrote:
> Can anyone tell me how to change the duplex on a NIC?

What NIC have you got?  Normally an adapter will auto-detect whether the 
device it's connected to is capable of full duplex and set it if so. 
Forcing full duplex on a hub that isn't capable of it is just going to 
lead to a lot of collisions and reduced throughput.




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