3Com Switch 8800 Advanced Software V5 Configuration Guide

Troubleshooting PoE 1021
■ A PoE configuration file is already applied to the PoE interface.
Solution:
■ In case 1, you can solve the problem by removing the original configurations of
those configurations.
■ In case 2, you need to need to modify some configurations in the PoE
configuration file.
■ In case 3, you need to remove the application of the undesired PoE
configuration file to the PoE interface.
Symptom: Provided that parameters are valid, configuring an AC input
under-voltage threshold fails.
Analysis:
The AC input under-voltage threshold is greater than or equal to the AC input
over-voltage threshold.
Solution:
You can drop the AC input under-voltage threshold below the AC input
over-voltage threshold.