Chapter 3: Featuring Configuration
– Web UI
Featuring Configuration
– Web UI
NGSM48T2 User Manual | 37
Power Reduction
EEE Configuration:
This page allows the user to inspect and configure the current EEE port settings:
EEE is a power saving option that reduces the power usage when there is very low
traffic utilization (or no traffic).
EEE works by powering down circuits when there is no traffic. When a port gets data
to be transmitted all circuits are powered up. The time it takes to power up the
circuits is named wakeup time. The default wakeup time is 17 us for 1Gbit links and
30 us for other link speeds. EEE devices must agree upon the value of the wakeup
time in order to make sure that both the receiving and transmitting device has all
circuits powered up when traffic is transmitted. The devices can exchange
information about the devices wakeup time using the LLDP protocol.
For maximizing the power saving, the circuit isn't started at once transmit data are
ready for a port, but is instead queued until 3000 bytes of data are ready to be