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Lantronix
SM24TBT2DPA and SM24TBT2DPB Web User Guide
2- 13 PoE
PoE (Power over Ethernet) is used to transmit electrical power to remote devices
over standard Ethernet cable. It can be used for powering IP telephones, wireless
LAN access points and other equipment, where it would be difficult or expensive to
connect the equipment to main power supply.
2- 13.1 Configuration
This page lets you view and configure the current PoE global and port settings.
Web Interface
(before FW vB6.54.3576)
To configure Power over Ethernet via the web UI:
1. Click Configuration, PoE, Configuration.
2. Specify the Reserved Power determined by and Power Management Mode.
3. Specify the Port Mode, Schedule, Priority, Capacitor Detection, and Maximum Power parameters for
each port.
4. Click Apply.
Figure 2-13.1: PoE Configuration page
(SM24TBT2DPA before FW vB6.54.3476)
Parameter descriptions:
(before FW vB6.54.3476)
Reserved Power determined by
: There are three modes for configuring how the ports/PDs may reserve
power.
Class
mode: In this mode each port automatically determines how much power to reserve according to
the Class the connected PD belongs to and reserves the power accordingly. Four different port classes
exist; for 4, 7, 15.4 and 30 Watts. In Class mode, the Maximum Power fields have no effect.
Allocation
mode: In this mode the user allocates the amount of power that each port may reserve. The
allocated/reserved power for each port/PD is specified in the Maximum Power fields (default).
LLDP-MED
mode: This mode is similar to the Class mode expect that each port determines the amount
power it reserves by exchanging PoE information using the LLDP protocol and reserves power
accordingly. If no LLDP information is available for a port, the port will reserve power using the class