Energy-efficient Ethernet

When no data is being transferred through a port, energy-efficient Ethernet (EEE) puts the data link in sleep mode to reduce the power consumption of the FortiSwitch unit. When data flows through the port, the port resumes using the normal amount of power. EEE works over standard twisted-pair copper cables and supports 10 Mbps, 100 Mbps, 1 Gps, and 10 Ge. EEE does not reduce bandwidth or throughput.

If you are using the CLI, you can also specify the number of microseconds that circuits are turned off to save power and the number of microseconds during which no data is transmitted while the circuits that were turned off are being restarted.

In addition, you can use the LLDP 802.3 TLV to advertise the EEE configuration.

NOTE: EEE is not supported on SFP and QSFP modules.

Using the GUI:

1. Go to Switch > Port > Physical.
2. Select a port and then select Edit.
3. Under Energy-Efficient Ethernet, select Enable.
4. To save your changes, select Update.

To check which ports have EEE enabled, go to Switch > Port > Physical. A green arrow in the EEE column indicates that EEE is enabled for that port. A red arrow in the EEE column indicates that EEE is disabled for that port.

Using the CLI:

NOTE: When you change the eee-tx-wake-time value, the port resets, and the connection is lost briefly.

config switch physical-port

edit <port_name>

set energy-efficient-ethernet {enable | disable}

set eee-tx-idle-time <0-2560>

set eee-tx-wake-time <0-2560>

end

For example, to use EEE on port 7:

config switch physical-port

edit port7

set energy-efficient-ethernet enable

set eee-tx-idle-time 500

set eee-tx-wake-time 200

end

To check that EEE is enabled on port 7:

diagnose switch physical-ports eee-status port7

To check which ports have EEE enabled:

diagnose switch physical-ports eee-status

To advertise the EEE configuration in the LLDP 802.3 TLV:

config switch lldp profile

edit <profile_name>

set 802.3-tlvs eee-config

next

end

To check that the EEE configuration is being advertised:

diagnose switch physical-ports eee-status