How do I configure network interfaces for full-duplex mode?Posted by Sean on July 31, 2010
ETHTOOL_OPTS="autoneg off speed 100 duplex full"
This change will take effect on the next reboot or you can do the following to make it take effect immediately.
ethtool -s eth0 duplex full speed 100 autoneg off
ethtool -s eth1 duplex full speed 100 autoneg off
ifdown eth0 && ifup eth0 &
ifdown eth1 && ifup eth1 &
Please note that the last 2 lines actually restart the network interfaces. You can check and/or verify the settings by using the ethtool command. Example: