Basic Administration Protocols
204
Instruction Manual - NXA-ENET8-POE+
Setting the Switch's Overall PoE Power Budget
Use the Administration > PoE > PSE (Configure Global) page to set the maximum PoE power budget for the switch (power available
to all Gigabit Ethernet ports).
The following table lists the options on this page:
Perform these steps to set the overall PoE power budget for switch:
1.
Click
Administration
>
PoE
>
PSE
.
2.
Select
Configure Global
from the Step list.
3.
Set the maximum PoE power provided by the switch, and enable the compatible mode if required.
4.
Click
Apply
.
Administration - PoE (PSE) Options
PoE Maximum Available Power
The power budget for the switch (i.e., power available to all switch ports). If devices connected to
the switch require more power than the switch budget, the port power priority settings are used to
control the supplied power.
PoE Maximum Allocation Power
Sets a power budget for the switch. (Range: 50000-740000 milliwatts; Default: 370000 milliwatts)
Compatible Mode
Allows the switch to detect and provide power to powered devices that were designed prior to the
IEEE 802.3af PoE standard. (Default: Disabled)
The switch automatically detects attached PoE devices by periodically transmitting test voltages
that over the Gigabit Ethernet copper-media ports. When an IEEE 802.3af or 802.3at compatible
device is plugged into one of these ports, the powered device reflects the test voltage back to the
switch, which may then turn on the power to this device. When the compatibility mode is enabled,
this switch can detect IEEE 802.3af or 802.3at compliant devices and the more recent 802.3af
non-compliant devices that also reflect the test voltages back to the switch. It cannot detect other
legacy devices that do not reflect back the test voltages.
For legacy devices to be supported by this switch, they must be able to accept power over the data
pairs connected to the RJ-45 ports.
FIG. 233
Setting the Switch’s PoE Budget