[CentOS] How can I set NIC duplex before installation?
John Horne
john.horne at plymouth.ac.ukMon Jun 25 22:48:42 UTC 2007
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Hello, I have installed CentOS 5 onto a server this afternoon using NFS. The NFS 'server' has a 100Mb/full-duplex interface, the server I installed CentOS on to has 4 x 100Mb interfaces. However, the installation was painfully slow to start with, and by using ctrl-alt-f2/f4/f5 I could see that contact with the NFS server was intermitently failing. Soon after some of the packages had installed the 'ethtool' command was then available, and I could see that the (installation) server NIC had been set to 100Mb but at half-duplex. This was causing numerous collisions and errors on the NIC interface. As soon as I reset the NIC to full-duplex (via ctrl-alt-f2 and using ethtool), then the installation speeded up and seemed to cause no more errors. My question is, how can I tell anaconda to set the NIC interface options such as speed and duplex? I have another server to install which has 2 x gigabit NICs and 2 x 100MB NIC's. My concern is that anaconda will again use wrong NIC parameters, and the installation will again be very slow. Surely it is possible to set the NIC options? John. -- --------------------------------------------------------------- John Horne, University of Plymouth, UK Tel: +44 (0)1752 233914 E-mail: John.Horne at plymouth.ac.uk Fax: +44 (0)1752 233839
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