Port Management
Green Ethernet
194 Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
10
In addition to the above Green Ethernet features, the 802.3az Energy Efficient Ethernet
(EEE) is found on devices supporting GE ports. EEE reduces power consumption when there
is no traffic on the port. See 802.3az Energy Efficient Ethernet Feature for more information
(available on GE models only).
EEE is enabled globally by default. On a given GE or FE port, if EEE is enabled, the short
reach mode must disabled. Similarly, the user must disable EEE before enabling short reach
mode. On XG interfaces, short reach is always enabled and there is no restriction on EEE
settings.
These modes are configured per port, without taking into account the LAG membership of the
ports.
The device LEDs are power consumers. Since most of the time the devices are in an
unoccupied room, having these LEDs lit is a waste of energy. The Green Ethernet feature
enables you to disable the port LEDs (for link, speed, and PoE) when they are not required,
and to enable the LEDs if they are needed (debugging, connecting additional devices etc.).
On the System Summary page, the LEDs that are displayed on the device board pictures are
not affected by disabling the LEDs.
Power savings, current power consumption and cumulative energy saved can be monitored.
The total amount of saved energy can be viewed as a percentage of the power that would have
been consumed by the physical interfaces had they not been running in Green Ethernet mode.
The saved energy displayed is only related to Green Ethernet. The amount of energy saved by
EEE is not displayed.
Power Saving by Disabling Port LEDs
The Disable Port LEDs feature saves power consumed by device LEDs. Since the devices are
often in an unoccupied room, having these LEDs lit is a waste of energy. The Green Ethernet
feature enables you to disable the port LEDs (for link, speed, and PoE) when they are not
required, and to enable the LEDs if they are needed (debugging, connecting additional devices
etc.).
On the System Summary page, the LEDs that are displayed on the device board pictures are
not affected by disabling the LEDs.
Port LEDs can be disabled on the Properties page.
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