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Green Features Configuration
12 Green Features
The green features on the switch are Energy Efficient Ethernet (EEE) technologies, as defined by the
IEEE 802.3az task force. These features are designed to reduce per-port power usage by shutting
down ports when no link is present or when activity is low.
Green Features Configuration
To display the Green Features configuration page, click
Green Features
>
EEE Configuration
in the
navigation pane.
Figure 130. Green Features
Table 98. Green Features Configuration Fields
Click
Apply
to save any changes for the current boot session. The changes take effect immediately but
are not retained across a switch reset unless you click
Save Configuration
.
Field
Description
Auto Port Power-Down
When this feature is enabled and the port link is down, the PHY automatically goes down for
a short period of time. The port wakes up when it senses activity on the link. This feature
enables saving power consumption when no link partner is present. This feature is disabled
by default.
Low-Power Idle (EEE)
EEE (Energy Efficient Ethernet) is designed to save power by turning off network ports that
are not passing traffic. When this features is enabled, the ports can enter a low-power mode
to reduce power consumption during periods of low link utilization. EEE works for ports in
auto-negotiation mode, where the port is negotiated to either 100 Mbps full duplex or 1 Gbps
(1000 Mbps) full duplex. This feature is disabled by default.
CAUTION
: EEE is automatically disabled for a port if its auto-negotiation mode becomes
disabled. To re-enable EEE for any port after enabling its auto-negotiation mode, the Low
Power Idle (EEE) mode for the switch must be manually disabled and then enabled again.
