set port energy-efficient-eth (S-, 7100-Series)

Use this command to enable and configure Energy Efficient Ethernet (EEE) on Ethernet ports that support EEE.

Syntax

Parameters

Defaults

• EEE is disabled by default.
• Wakeup time defaults to 30 micro-seconds for 100 and 1000 Mb ports and 5 micro-seconds for 10000 Mb ports.
• Fallback wakeup time defaults to 17 micro-seconds for 100 and 1000 Mb ports and 20 micro-seconds for 10000 Mb ports.

Mode

All command modes.

Usage

Enabling EEE on a link reduces the power consumption on the Ethernet link during low data activity. EEE must be enabled on both sides of the link to operate. Auto negotiation is restarted when you enable or disable EEE, causing the link to bounce. Link state does not change as a result of an EEE transition to and from a lower level of power. Frames that are in transit are neither dropped nor corrupted during EEE transition to and from a lower level of power.

The wakeup time is the period between the reception of an IDLE signal and the reception of the first data permitted on the interface. It is recommended that you only modify wakeup and fallback values if a longer wakeup time is required. The negotiation of wakeup times ia accomplished using the LLDP EEE TLV which must be enabled on both sides of the link using set lldp port tx-tlv. If the configured wakeup time is not acceptable, the fallback wakeup time is used.