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3Com Switch 8800 Configuration Guide Chapter 52 PoE PSU Supervision Configuration
52-1
Chapter 52 PoE PSU Supervision Configuration
52.1 Introduction to PoE PSU Supervision
The PoE-capable Switch 8800 can monitor the external PoE PSUs through the power
supervision module on the PoE external power system.
The PoE PSU supervision module enables you to:
z Set the alarm thresholds for the AC input voltages of the PoE PSUs.
z Set the alarm thresholds for the DC output voltages of the PoE PSUs.
z Query PSU information such as voltage and power.
52.2 AC Input Alarm Thresholds Configuration
You can set the AC input alarm thresholds for the PoE PSUs to enable the Switch 8800
to monitor the AC input voltages of the PSUs in real time through the PoE supervision
module.
52.2.1 AC Input Alarm Thresholds Configuration Tasks
Table 52-1 AC input alarm thresholds configuration tasks
No Item Command Description
1 Enter system view
system-view
—
2
Set the overvoltage alarm
threshold of AC input (upper
threshold) for the PoE PSUs
poe-power input-thresh
upper string
Required,
and the max
voltage is
264.0 V.
3
Set the undervoltage alarm
threshold of AC input (lower
threshold) for the PoE PSUs
poe-power input-thresh
lower string
Required,
and the min
voltage is
90.0 V.
4
Display the AC input state of
each PoE PSU
display poe-power
ac-input state
Optional, and
you can
execute this
command in
any view.