Power management/Ethernet

This article describes the setup of power management of Ethernet devices.

Disable Wake On LAN
With Wake On LAN your network card will remain powered to monitor for a 'magic' packet that will instruct it to wake your computer.

To save some power WOL can be disabled.

The current setting can be checked with:

To disable:

BIOS
If you have an onboard device, you can most often disable WOL in the BIOS.

ethtool
Add this string to /etc/conf.d/net file to disable WOL:

Throttle Gigabit-Ethernet
Gigabit-Ethernet needs more power than Fast-Ethernet. If you don't use the greater bandwidth, you can throttle your connection to Fast-Ethernet. For it install :

Now you can throttle the connection:

If you want to always throttle the connection, add command to ethtool_change_INTERFACE string in /etc/conf.d/net file.