Power Over Ethernet - AMX NXA-ENET8-2POE Operation/Reference Manual

3.
Set the fast start repeat count, descriptive information for the endpoint device, and policies applied to
selected ports.
4.
Click Save.

Power Over Ethernet

Use the Power Over Ethernet Configuration page to set the maximum PoE power provided to a port, the
maximum power budget for the switch (power available to all RJ-45 ports), the port PoE operating mode,
power allocation priority, and the maximum power allocated to each port.
If the power demand from devices connected to the switch exceeds the power budget, the switch uses port
power priority settings to limit the supplied power.
FIG. 84
Power Over Ethernet Configuration
Power Over Ethernet Configuration parameters
• Reserved Power
determined by
• Power
Management
Mode
NXA-ENET8-2POE Gigabit Ethernet Layer 2 PoE Switch
There are three modes for configuring how the ports or attached Powered
Devices (PD) may reserve power:
Class - Each port automatically determines how much power to reserve
according to the class to which the connected PD belongs, and reserves power
accordingly. Four different port classes exist, including 4, 7, 15.4 or 34.2 Watts.
In this mode, the Maximum Power fields have no effect.
Allocation - The amount of power that each port may reserve is specified. The
allocated/reserved power for each port/PD is specified in the Maximum Power
fields.
LLDP-MED - 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 mode In this
mode the Maximum Power fields have no effect For all modes, if a port uses
more power than the power reserved for that port, it is shut down.
There are two modes for configuring when to shut down the ports:
Actual Consumption - Ports are shut down when actual power consumption for
all ports exceeds the amount of power that the power supply can deliver or if the
actual power consumption for a given port exceeds the power reserved for that
port. The ports are shut down according to port priority. If two ports have the
same priority, the port with the highest port number is shut down.
Reserved Power - Ports are shut down when total reserved powered exceeds
the amount of power that the power supply can deliver. In this mode the port
power is not turned on if the PD requests more power than available from the
power supply.
Configuring the NXA-ENET8-2POE
115