Configuring Power over Ethernet Parameters
Installing and Managing Power over Ethernet (PoE)
page 6-6
OmniSwitch 6855 Series Hardware Users Guide
September 2011
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
Configuring the Total Power Available to a Port
By default, PoE automatically sets a maximum amount of milliwatts for each port on the OmniSwitch. In
other words, each port is authorized by the system software to use up to the default amount of milliwatts to
power any attached device.
You can either increase or decrease this value based on the values in the
Chapter 6, “Installing and Manag-
ing Power over Ethernet (PoE).”
table.
Increasing the total power available to an individual port may provide a more demanding Powered Device
(PD) with additional power required for operation. Decreasing the total power available to a port helps to
preserve inline power and assists in the overall management of the switch’s power budget.
To increase or decrease the total power available to an individual port, use the
lanpower power
command.
Since you are setting the power allowance for an individual port, you must specify a
slot/port
number in
the command line. For example, the syntax
-> lanpower 1/1 power 3000
reduces the power allowance on port 1 of the switch to 3000 milliwatts. This new value is now the maxi-
mum amount of power the port can use to power any attached device (until the value is modified by the
user).
Configuring the Total Power Available to a Switch
Like the maximum port power allowance, the system software also provides a maximum
switch-wide
power allowance. By default, each switch is authorized by the system software to use up to the maximum
watts available from the PoE power supply.
As with the maximum port power allowance, the user can either increase or decrease this value. Values
may range from 37 watts to the maximuam available from the PoE power supply.
Increasing the total power available to a switch may provide more demanding Powered Devices (PDs)
with additional power required for operation. Decreasing the total power available helps preserve inline
power and assists in the overall management of the switch’s power budget.
Important.
Before changing the maximum slot-wide power allowance, you must disable PoE for the slot
via the
lanpower stop
command. Once the new value is assigned, re-enable PoE for the slot via the
lanpower start
command.
