Hey. So I am new to opnsense and have noticed that I am getting a lot of errors in on WAN. Does anyone have any idea on what could be causing this? I have a 50 meter cat 7 cable running from my ISP router to my opnsense router, all gigabit ports.
Here is a screenshot of my interface statistics: https://imgur.com/a/csWkLPH
Check the interfaces on both ends for speed and duplex mismatches, although I suspect you would see much higher error numbers if this was the case. Just to be sure I would also disable energy saving / low power modes on both interfaces, as this might cause link flapping or retransmits, which might be perceived as errors.
Considering the total amount of traffic, I wouldn't really consider this to be a problem, as percentage-wise it's almost nothing.