OmniSwitch 6450 Hardware Users Guide September 2015 page 6-5
PoE Class Detection
Powered devices can be classified into different classes as shown in the table below. Class detection
allows for automatic maximum power adjustment based on the power class detected. This will prevent the
switch from delivering more than the maximum power allowed based on a device’s class.
During class detection the switch will allocate the maximum amount of power allowed based on the class
detected. Once powered, if the device uses less than the maximum the remaining power will be made
available for other devices.
Setting the PoE Operational Status
Enabling PoE
By default, Power over Ethernet is administratively enabled in the switch’s system software. However, in
order to physically activate PoE, you must issue the lanpower start command on a slot-by-slot basis
before any connected PDs will receive inline power.
To activate power to PoE-capable in a switch, enter the corresponding slot number only. For example:
-> lanpower start 1
If power to a particular port has been disconnected via the lanpower stop command, you can reactivate
power to the port by specifying both the slot and port in the command line. For example:
-> lanpower start 1/1
Note. You cannot use the slot/port syntax to initially activate PoE on a port. This syntax is intended only
to reactivate power to those that have been disconnected via the lanpower stop command. To initially
activate PoE, you must use the lanpower start slot syntax only, as described above.
Disabling PoE
To disable PoE on a particular slot or port, use the lanpower stop command.
To disable PoE on a specific PoE-capable port, enter a slot/port number. For example:
-> lanpower stop 1/4
To disable PoE for all PoE-capable in a slot, enter the corresponding slot number only.
For example:
-> lanpower stop 1
Class
Usage
Classification
Current (mA)
Power Range
(Watts)
Class Description
0 Default 0-4 0.44-30.00 Unimplemented
1 Optional 9-12 0.44-3.84 Very Low Power
2 Optional 17-20 3.84-6.49 Low Power
3 Optional 26-30 6.49-15.40 Mid Power
4 Optional 36-44 15.4-31.00 High Power
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