3Com MSR 50 Series, Configuration Manual

Page: 2177 / 2443

Configuring the PoE Interface 2177
n
■
pse-id indicates number of the slot where a PoE interface locates.
■
When the remaining power of the PoE system is lower than the maximum
power of the PSE, PoE is disabled for the PSE.
■
The maximum power of the PSE must be greater than or equal to the sum of
maximum power of all critical PoE interfaces on the PSE so as to guarantee the
power supply to these PoE interfaces.
Configuring the PoE
Interface
You can configure a PoE interface in either of the following two ways:
■
Adopt the command line.
■
Configure a PoE configuration file and apply the file to the specified PoE
interface(s).
Usually, you can adopt the command line to configure a single PoE interface, and
adopt a PoE configuration file to configure multiple PoE interfaces at the same
time.
c
CAUTION: You can adopt either mode to configure, modify, or delete a PoE
configuration parameter under the same PoE interface.
The PSE applies power to a PoE interface in the following two modes:
■
For a device with only signal cables, power is supplied over signal cables.
■
For a device with spare cables and signal cables, power can be supplied over
spare cables or signal cables.
n
Some PSE does not support power over spare cables.
To clearly identify the PD connected to a PoE interface, you can give a PD
description.
Configuring a PoE
Interface through the
Command Line
Follow these steps to configure a PoE interface through the command line:
Enable PoE for the PSE poe enable pse pse-id Required
By default, PoE is enabled for the PSE.
Configure the
maximum power for the
PSE poe max-power
max-power [ pse pse-id ]
Optional
The default maximum power of the
PSE varies with devices.
The support of the pse pse-id
parameter varies with devices.
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enter PoE interface view interface interface-type
interface-number
-
Enable PoE poe enable Required
By default, PoE is disabled on the PoE
interface.