[CentOS] force 10 megabit full duplex

Sun Apr 16 00:41:10 UTC 2006
Jim Perrin <jperrin at gmail.com>

On 4/15/06, William Warren <hescominsoon at emmanuelcomputerconsulting.com> wrote:
> I figured out how to force 10 megabit full duplex on my ethernet
> interface.  The trick is i need it to stick in case of a reboot so i
> don't have to reforce it.  I have not been able to figure that one out
> yet.  I have not found it in the man's or google yet.  If someone could
> point me in the right direction i would be much obliged.

You can add ETHTOOL_OPTS= options to the networking scripts in

You'd want something similar to
ETHTOOL_OPTS="speed 10 duplex full autoneg off"

see /usr/share/doc/initscripts-$VERSION/sysconfig.txt for all the gory details.

Any sufficiently advanced technology is indistinguishable from magic.
-Arthur C. Clarke