CE Services Products - User Guide

Web Interface – Monitor

5.55 LLDP – EEE

By using Energy Efficient Ethernet (EEE) power savings can be achieved at the expense of traffic latency. This latency results from the time required to boot up circuits that were turned off by EEE to save power. This time is called “ wakeup time ” . To achieve minimal latency, devices can use Link Layer Discovery Protocol (LLDP) to exchange information about their respective Tx and Rx “wakeup time” , as a way to agree upon the minimum wakeup time they need. This page provides an overview of EEE information exchanged by LLDP.

5.55.1 LLDP Neighbors EEE Information

The displayed table contains a row for each port. If the interface does not support EEE, then it displays as "EEE not supported for this interface". If EEE is not enabled on particular interface, then it displays as "EEE not enabled for this interface". If the link partner doesn't supports EEE, then it displays as "Link partner is not EEE capable.The columns display the following information: Local Port This column displays the port on which LLDP frames are received or transmitted. Tx Tw This column displays the maximum time that link partner ’ s transmit path can hold-off sending data after de-assertion of LPI. Rx Tw This column displays the time that link partner ’ s receiver would like the transmitter to hold-off to allow time for the receiver to wake from sleep.

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User Guide: CE Services

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