16.1.2 Power saving functionality

(1) Powered OFF on Ports

By turning off the power supplied to unused ports, you can reduce power consumption. To turn off the power supply to unused ports:

• Use a configuration command to place the port in the shutdown status

• Use an operation command to place the port in the inactive status

(2) LED brightness control function

You can control the brightness of the LEDs on the Switch to reduce power consumption.

The Switch allows you to permanently set the LED brightness to power saving mode or turn off the LEDs. The Switch also has a functionality to automatically adjust the brightness of the LEDs on the Switch. This function is called brightness automatic adjustment function.

Once the LED automatic brightness control functionality is enabled, it turns down the brightness of the LED on the Switch after a certain period of time has elapsed without the following events occurring, and then the LEDs are turned off when a certain period of time elapses again without any of the following events occurring:

• Login from the console

• Inserting or removing a memory card

• Ethernet interface link-up or link-down

Note that this functionality does not change the LEDs' brightness while a user is logged in from the console, and the LEDs remain at normal brightness until the user logs out.

The following table describes the LED brightness settings used when the LED brightness control is enabled.

Table 16-1 Brightness of LED when LED brightness control is set

LED	LED brightness control setting
	Normal brightness	Power saving brightness	Off
Port LED (ON)	Normal brightness	Power saving brightness	Off

Note that LED will turn off depending on the status, regardless of whether or not LED brightness setting is enabled.