Energy Efficient Ethernet (EEE) (S-, 7100-Series)

Enabling EEE on an S- or 7100-Series 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 EEE is enabled or disabled, 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 the set lldp port tx-tlv energy-eff-eth command. If the configured wakeup time is not acceptable, a fallback wakeup time is used.

Use the set port energy-eff-eth command to enable EEE and change wakeup and fallback times.