Users Guide

80 Switch Feature Overview
Green Technology Features
For information about configuring Green Technology features, see "Port
Characteristics" on page 649.
Energy Detect Mode
When the Energy Detect mode is enabled and the port link is down, the PHY
automatically goes down for short period of time and then wakes up
periodically to check link pulses. This mode reduces power consumption on
the port when no link partner is present. Energy Detect is proprietary and
operates independently from EEE.
Energy Efficient Ethernet
Dell EMC Networking switches support IEEE 802.3az Energy Efficient
Ethernet (EEE) Lower Power Idle Mode on front panel copper ports, which
enables both the send and receive sides of the link to disable some
functionality for power savings when the link is lightly loaded. EEE is
standardized by the IEEE and operates independently of Energy Detect. EEE
requires auto-negotiation to be enabled. Setting a port to a forced speed
disables EEE.
EEE and Energy Detect are supported on the Dell EMC Networking N2000,
N2100-ON, N3000, and N3100-ON Series 1G copper ports. EEE and energy
detect are supported on the Dell EMC Networking N4000 Series 10G copper
ports. EEE is supported on Gigabit Ethernet ports 1-8 on the N1108 Series
switches, on Gigabit Ethernet ports 5-20 on the N1124 Series switches, and
Gigabit Ethernet ports 9-24 and 29-44 on the N1148 Series switches. EEE is
supported on Gigabit Ethernet ports 1-17 on the N1524 and Gigabit Ethernet
ports 9-41 on the N1548. Energy detect is supported on all Gigabit Ethernet
ports on the N1100 and N1500 Series switches.
EEE and Energy Detect are enabled by default on the N-Series copper ports.
Energy Detect is enabled by default on the Dell EMC Networking N4000
Series switches 10G copper ports and cannot be disabled. Energy detect is
enabled by default on the other Dell EMC Networking N-Series switches.
Neither energy-detect nor EEE are supported on out-of-band, 2.5G or 5G
NBASE-T ports.