Frequent communication alarms from NMC3 devices monitored by IT Expert

[JLehr]

Some customers report frequent communication alarms from NMC3 devices monitored by IT Expert:

• A new device has been detected at that address
• Lost communication
• Communication has been restored

These alarms can occur when all the device information the Gateway requires to successfully poll NMC3 devices is not returned as expected.

Although you can mute the alarms on the affected devices to temporarily mitigate the frequency, there is a risk of missing important communication alarms by doing so.

Resolution

For APC Rack PDU

Update the firmware on NMC3 RPDU devices to version 3.0.0 or newest available in IT Expert. 

See how

For APC UPS

Follow the instructions in APC FAQ 000262012