3Com Switch 8800 Advanced Software V5 Configuration Guide

1012 CHAPTER 78: POE CONFIGURATION
A PD is a device accepting power from a PSE. There are standard PDs and
nonstandard PDs. A standard PD refers to the one that complies with IEEE 802.3af.
The PD that is being powered by the PSE can be connected to other power supply
unit for redundancy backup.
Protocol Specification The protocol specification related to PoE is IEEE 802.3af.
PoE Configuration
Task List
Complete these tasks to configure PoE:
n
■ When the PoE power is shut down or unavailable, all PoE related configuration
commands will fail.
■ Turning off the PoE power during the startup of the device might result in the
failure to restore the PoE configuration.
Configuring the PoE
Power
The maximum PoE power refers to the maximum power that the device can
provide for all PSEs. To avoid a power failure to the PSE owing to overload, the
power consumption of all PSEs should not exceed the maximum power of the
device.
Follow these steps to configure the PoE power:
n
■ In the case of 220 VAC input, when the switch uses single or dual power
supply modules, you can set at most 2250 W as the maximum PoE power;
when the switch uses triple power modules, you can set at most 4500 W as the
maximum PoE power.
■ In the case of 110 VAC input, when the switch uses single or dual power
supply modules, you can set at most 1125 W as the maximum PoE power;
when the switch uses triple power modules, you can set at most 2250 W as the
maximum PoE power.
Task Remarks
“Configuring the PoE Power” on page 1012 Required
“Configuring a PSE” on page 1013 Required
“Configuring a PoE Interface” on page 1013 Required
“Configuring PoE Power Management” on page 1015 Optional
“Configuring PoE Monitoring” on page 1017 Optional
“Enabling the PSE to Detect Nonstandard PDs” on page 1018 Optional
“Displaying and Maintaining PoE” on page 1018 Optional
To do... Use the command... Remarks
Enter system view system-view -
Configure the maximum PoE
power
poe power max-value
max-power
Optional
The default maximum PoE
power is 1125 for 220 VAC
input and 562 for 110 VAC
input.