Force gigE NICs to operate at 100baseTX-FD.

Mark Watts m.watts at eris.qinetiq.com
Tue Apr 13 04:32:00 CDT 2004


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> Hi there --
>
> I have the following configuration.....
>
> Dell -- PowerEdge 650; OS: RedHat 9.0; Kernel: vmlinuz-2.4.20-30.9
> Network cards: Intel gigE cards
>
> The requirement is to operate the gigE network cards at 100Mbps
> Full-Duplex
> with "no" auto-negotiation.
>
> By default -- the NICs are getting configured 1000Mbps with
> auto-negotiation.
>
> I did install the rpm package "e100-2.3.30-rh9-2.4.20-16.9.i386.rpm"
> from Intel
> to have the 100Mbps functionality....but the NICs are failing to operate
> at 100Mbps-full.
> Any suggestions?
>
> thanks!
> --Asim;


Use the e1000 driver.
Install ethtool and use the following:

ethtool -s ethX speed 100 duplex full autoneg off


Mark.

- -- 
Mark Watts
Senior Systems Engineer
QinetiQ TIM
St Andrews Road, Malvern
GPG Public Key ID: 455420ED

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