Poe Power-Management - 3Com 8807 Command Reference Manual

886 C 50: P E C
HAPTER O

poe power-management

C
ONFIGURATION OMMANDS
Syntax
poe power-management { auto | manual } slot slot-num
View
System view
Parameter
slot-num: Number of the slot where the module resides.
auto: The switch automatically manages the PoE mode on a module.
manual: You need to manually manage the PoE mode on a module on the switch.
Description
Use the poe power-management command to configure the PoE power
management mode for a module on the switch.
By default, you need to manually manage PoE on the module on the switch.
Before the power supply is almost fully loaded, the system powers all ports.
Working together with the command for configuring PoE priority on a port, this
command takes effect when the external power supply by the switch is almost
fully loaded.
The following section describes PoE in auto mode and in manual mode:
Auto mode: Priority management mode. If new PDs are connected to the
■
switch when the external power supply is almost fully loaded, the switch first
powers the PD connected to the port whose PoE priority is the highest. For
example, assume that the PoE priority on port A is set to critical. If a new PD is
connected to port A when the external power supply by the switch is almost
fully loaded, the switch stops powering the PD connected to the port whose
PoE priority is the lowest and begins to power the PD connected to port A.
Manual mode: If new PDs are connected to the switch when the external
■
power supply is almost fully loaded, the switch disregards the PoE priority of
the port but notifies you that a new device is connected, without changing the
original PoE status. For example, assume that the PoE priority on port A is set to
critical. If a new PD is connected to port A when the external power supply by
the switch is fully loaded, the switch notifies you that a new device is
connected but will not power the device connected to port A.
Related command: poe priority.
Example
# Configure the switch to automatically power the PD connected to the module in
slot 2.
[SW8800]poe power-management auto slot 2
# Restore the mode in which the switch powers the PD connected to the module
in slot 2 to manual.
[SW8800] poe power-management manual slot 2