Down ports

Hi all

I have some problems
on my mikrotik, ports 1-4 turn off once or twice a month

This goes on for a few minutes. Fall happens several times.

Detail on the photo
Router os - 6.42.2
RB3011UiAS
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Your problem looks to be the same as others have found a common issue here;
http://forum.mikrotik.com/t/rb3011-port-flopping-bad-design/114846/46