3Com 4210G Series, Руководство по настройке, Страница: 1121 / 1133

29-4
To do… Use the command… Remarks
Configure the PoE mode for the
PoE interface
poe mode signal
Optional
signal
(power over
signal cables) by
default.
Return to system view
quit
—
Apply the PoE
configuration file to one
or more PoE interfaces
apply poe-profile
{
index index |
name profile-name
}
interface
interface-range
interface interface-type
interface-number
Apply
the PoE
configur
ation file
to the
PoE
interface
(s)
Apply the PoE
configuration file to the
current PoE interface in
PoE interface view
apply poe-profile
{
index index
|
name profile-name
}
Use either approach
z
After a PoE configuration file is applied to a PoE interface, other PoE configuration files can not
take effect on this PoE interface.
z
If a PoE configuration file is already applied to a PoE interface, you must execute the
undo apply
poe-profile
command to remove the application to the interface before deleting or modifying the
PoE configuration file.
z
If you have configured a PoE interface through the command line, you cannot configure it through
a PoE configuration file again. If you want to reconfigure the interface through a PoE configuration
file, you must first remove the command line configuration on the PoE interface.
z
You must use the same mode (command line or PoE configuration file) to configure the
poe
max-power max-power
and
poe priority
{
critical
|
high
|
low
} commands.
Configuring PoE Power Management
Configuring PD Power Management
The power priority of a PD depends on the priority of the PoE interface. The priority levels of PoE
interfaces include critical, high and low in descending order. Power supply to a PD is subject to PD
power management policies.
All PSEs implement the same PD power management policies. When the PSE supplies power to a
PD,
z
By default, no power will be supplied to a new PD if the PSE power is overloaded.
z
Under the control of a priority policy, the PD with a lower priority is first powered off to guarantee
the power supply to the new PD with a higher priority when the PSE power is overloaded.