XS3700 Series User’s Guide
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CHAPTER 34
Green Ethernet
This chapter shows you how to configure the Switch to reduce the power consumed by switch ports.
34.1 Green Ethernet Overview
Green Ethernet reduces switch port power consumption in the following ways.
• IEEE 802.3az Energy Efficient Ethernet (EEE)
If EEE is enabled, both sides of a link support EEE and there is no traffic, the port enters Low
Power Idle (LPI) mode. LPI mode turns off some functions of the physical layer (becomes quiet)
to save power. Periodically the port transmits a REFRESH signal to allow the link partner to keep
the link alive. When there is traffic to be sent, a WAKE signal is sent to the link partner to return
the link to active mode.
• Auto Power Down
Auto Power Down turns off almost all functions of the port’s physical layer functions when the
link is down, so the port only uses power to check for a link up pulse from the link partner. After
the link up pulse is detected, the port wakes up from Auto Power Down and operates normally.
34.2 Configuring Green Ethernet
Click Advanced Application > Green Ethernet in the navigation panel to display the screen as
shown.
Note: EEE and Auto Power Down are not supported on an uplink port.
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