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Green Ethernet
Green Ethernet is a common name for a set of features that is designed to be environmentally
friendly, and to reduce the power consumption of a device. Green Ethernet is different from EEE
in that Green Ethernet energy-detect is enabled on all devices where only the gigabyte ports are
enabled with EEE.
The Green Ethernet feature can reduce overall power usage in the following ways.
•
Short-Reach Mode—Provides for power savings on a short length of cable. After cable
length is analyzed, the power usage is adjusted for various cable lengths. If the cable is
shorter than 50 meters, the device uses less power to send frames over the cable, thus
saving energy. This mode is only supported on RJ45 GE ports; it does not apply to Combo
ports. This mode is globally disabled by default. It cannot be enabled if EEE mode is
enabled (see below).
802.3 Energy Efficient Ethernet (EEE)—Reduces power consumption when there is no traffic on
the port. See
Energy Efficient Ethernet
for more information. EEE is enabled globally by default.
On a given port, if EEE is enabled, short reach mode will be disabled. If Short Reach Mode is
enabled, EEE is grayed out.
These modes are configured per port, without taking into account the LAG membership of the
ports.
Содержание LGS308
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