ECS4100 Series CLI Reference Guide-R07

Chapter 11 | Interface Commands
Power Savings
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none is detected, the MAC interface is also powered down to save
additional energy. If energy is detected, the switch immediately turns on
both the transmitter and receiver functions, and powers up the MAC
interface.
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Power saving when there is a link partner:
Traditional Ethernet connections typically operate with enough power to
support at least 100 meters of cable even though average network cable
length is shorter. When cable length is shorter, power consumption can be
reduced since signal attenuation is proportional to cable length. When
power-savings mode is enabled, the switch analyzes cable length to
determine whether or not it can reduce the signal amplitude used on a
particular link.
Note: Power savings can only be implemented on Gigabit Ethernet ports using
twisted-pair cabling. Power-savings mode on a active link only works when
connection speed is 1 Gbps, and line length is less than 60 meters.
Example
Console(config)#interface ethernet 1/24
Console(config-if)#power-save
Console(config-if)#
show power-save This command shows the configuration settings for power savings.
Syntax
show power-save [interface interface]
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-10/22/24/48)
Command Mode
Privileged Exec
Example
Console#show power-save interface ethernet 1/24
Power Saving Status:
Ethernet 1/24 : Enabled
Console#