Alcatel OS6855-24, Руководство пользователя по оборудованию

Страница: 142 / 204

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.