What is the cause of the [AP Restart: Kernal Panic] issue in R610 unleashed?

[young_joon_kwon]

Hello, everyone.

The AP is losing connectivity because logs from [AP Restart: kernal panic] continue to occur on the R610 Unleashed model you are currently using.

The symptom occurred at 6/21, and after the [heartbeat loss], the [Unleashed network change master] occurred in the log and the master AP changed.

Additionally, there was a power outage in the 6/9 building, and all APs were down.
The [kernal panic] log has been found since power outage and appears to be an issue caused by power failure.

Is there anyone who has the same issue as me issue?
Please share the solution to the issue.

Thank you.

[eizens_putnins]

I have seen kernel panic with AP restarting in loop in the past,  when APs were connected to gigabit switch through 100MB/s PoE injector and also when some cheap no-name PoE switches were used. Not sure if this issue is related. There was some issue with port speed autodetection in AP firmware, which caused kernel panic in such conditions. It never happened, when connected to a normal PoE switch.

So it makes sense to check port speed settings and the status of the port where AP is connected maybe it is a cable problem.

Of cause, fact that it started after a power outage is suspicious and may hint a corruption of firmware on AP or switch, but it may be also unrelated.