Digisol DG-FS4528P, Management Manual

Page: 702 / 973

C
HAPTER
30 | Power over Ethernet Commands
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C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
Setting a maximum power budget for the switch enables power to be
centrally managed, preventing overload conditions at the power source.
If the power demand from devices connected to the switch exceeds the
power budget setting, the switch uses port power priority settings to
limit the supplied power.
E
XAMPLE
Console(config)#power mainpower maximum allocation 180
Console(config)#
R
ELATED
C
OMMANDS
power inline priority (705)
power inline
compatible
This command allows the switch to detect and provide power to powered
devices that were designed prior to the IEEE 802.3af PoE standard. Use the
no form to disable this feature.
S
YNTAX
[ no ] power inline compatible
D
EFAULT
S
ETTING
Enabled
C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
The switch automatically detects attached PoE devices by periodically
transmitting test voltages that over the Fast Ethernet or 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 power inline compatible
command is used, 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 10/100BASE-TX
ports.