3Com Switch 8800 Family Configuration Guide

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POE PSU SUPERVISION
CONFIGURATION
Introduction to PoE
PSU Supervision
The PoE-capable Switch 8800 Family series 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:
■ Set the alarm thresholds for the AC input voltages of the PoE PSUs.
■ Set the alarm thresholds for the DC output voltages of the PoE PSUs.
■ Query PSU information such as voltage and power.
AC Input Alarm
Thresholds
Configuration
You can set the AC input alarm thresholds for the PoE PSUs to enable the Switch
8800 Family series to monitor the AC input voltages of the PSUs in real time
through the PoE supervision module.
AC Input Alarm
Thresholds
Configuration Tasks
n
■ You can set the thresholds to any appropriate values in the range, but make
sure the lower threshold is less than the upper threshold.
■ For 220 VAC input, it is recommended to set the upper threshold to 264 V and
the lower threshold to 181 V.
■ For 110 VAC input, it is recommended to set the upper threshold to 132 V and
the lower threshold to 90 V.
AC Input Alarm
Thresholds
Configuration Example
Network requirements
■ Set the overvoltage alarm threshold of AC input for PoE PSUs to 264.0 V.
■ Set the undervoltage alarm threshold of AC input for PoE PSUs to 181.0 V.
Tab le 671 AC input alarm thresholds configuration tasks
No Operation 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.