Why does PowerChute Network Shutdown not establish communications with Network Management Card when Radius is enabled?

Issue:
PowerChute Network Shutdown will not establish communications with Network Management Card when Radius is enabled.

Product Line/s:
PowerChute Network Shutdown
Network Management Cards (NMC) AP9617, AP9618, AP9619, AP9630, AP9631, AP9635CH, AP9635

Environment:
All support OS

Cause:
Radius authentication is not supported by PowerChute Network Shutdown

Solution:

Switch the Network Card from Radius to Local Authentication Only