Basic Operation Guide 2014/02

Enabling energy efficient ethernet
Energy efficient ethernet (EEE) follows the 802.3az standard, which provides support for a system
to operate in low-power idle mode during low-link use. This allows both sides of a link to disable
or turn off a portion of the system's transmit/receive circuitry, saving power. When traffic is ready
for transmission, the interface sends a "wake-up" message to the link partner to prepare to receive
the traffic. The circuitry is returned to "normal" mode. Both sides of the link must be EEE-capable
to support the power-saving idle mode.
Syntax
[ no ] int port-list energy-efficient-ethernet
Enables EEE for a given port or range of ports.
The no form of the command disables EEE for a port or range of ports.
(Default: Enabled)
Example
Figure 30 EEE enabled on ports B5 - B7
146 Power-Saving Features