3Com Switch 7750 Configuration Guide Guide

668 CHAPTER 61: POE PSU SUPERVISION CONFIGURATION
■ Set the undervoltage alarm threshold of AC input for PoE PSUs to 181.0 V.
Configuration procedure
# Enter the system view.
<SW7750> system-view
# Set the overvoltage alarm threshold of AC input for PoE PSUs to 264.0 V.
[SW7750] poe-power input-thresh upper 264.0
# Set the undervoltage alarm threshold of AC input for PoE PSUs to 181.0 V.
[SW7750] poe-power input-thresh lower 181.0
# Display the AC input state of the PoE PSUs.
[SW7750] display poe-power ac-input state
DC Output Alarm
Threshold
Configuration
You can set the DC output alarm thresholds for the PoE PSUs to enable the Switch
7750 Family to monitor the DC output voltages of the PSUs in real time through
Switch Fabrics.
DC Output Alarm
Thresholds
Configuration Tasks
DC Output Alarm
Threshold Configuration
Example
Network requirements
■ Set the overvoltage alarm threshold of DC output for the PoE PSUs to 55.0 V.
■ Set the undervoltage alarm threshold of DC output for the PoE PSUs to 47.0 V.
Configuration procedure
# Enter the system view.
<SW7750> system-view
# Set the overvoltage alarm threshold of DC output for the PoE PSUs to 55.0 V.
[SW7750] poe-power output-thresh upper 55.0
# Set the undervoltage alarm threshold of DC output for the PoE PSUs to 47.0 V.
Tabl e 528 DC output alarm thresholds configuration task
Operation Command Description
Enter the system view system-view -
Set the overvoltage alarm
threshold of DC output (upper
threshold) for the PoE PSUs
poe-power output-thresh
upper string
Required
You are recommended to set
the upper threshold to 47 V
when 220 VAC or 110 VAC is
input.
Set the undervoltage alarm
threshold of DC output (lower
threshold) for the PoE PSUs
poe-power output-thresh
lower string
Required
You are recommended to set
the lower threshold to 55 V
when 220 VAC or 110 VAC is
input.