WARNING: PoE is currently an experimental feature.
Power over Ethernet (PoE) is a technique that allows providing electric power and data over an ethernet cable. The original PoE standard (IEEE 802.3af) supplied up to 15.4 W per port, but the revision of the standard (802.3at) increased it to 25.5 W, and the newest revision 802.3bt-2018 increased the maximum to 71 W by using all four pairs.
Two types of devices supporting PoE are considered regarding PoE capabilities: the Power Sourcing Equipment (PSE), which are the devices capable of providing power on the cable; and the Powered Device (PD), which are devices that consume energy provided by PoE. Some BISDN Linux supported switches can act as a Power Sourcing Equipment (please refer to the platform specification provided by your vendor).
BISDN Linux comes with the command line utility
poectl, which provides a simple and convenient way to configure PoE.
:~$ poectl -h poectl for enable, disable, status and measurements of PoE ports Usage: poectl [OPTIONS] PORT | all OPTIONS: -h help -v version -e enable PoE -d disable PoE -s PoE status -mV PoE voltage -mC PoE current -mT PoE temperature -mP PoE power
To enable PoE on all ports run the following command:
:~$ poectl -e all
To disable PoE on a certain port:
:~$ poectl -d port2
To check the voltage on a certain port:
:~$ poectl -mV port2 PoE voltage status port2: 54.27V