Hi Danilo.
From information provided it is not possible to determine the cause of the problem.
Unfortunately you won't get any useful info from Instant On portal. If you have a console cable (orange one), you can check on the AP what was the latest reboot reason. If it is power failure, then you have several possibilities. Or your main power fluctuate, or power supply on your switch is getting tired, or the switch is getting to hot.
Best would be to open TAC case.
If you don't have a console cable, you can, if convenient, change switch management from cloud to local. Configuration will be lost, so take that into account. And you can then get support report from the switch.
Still I prefer to open TAC case.
Best, Gorazd
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Gorazd Kikelj
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