AP55 with UTM 9.4 Losing connections

Question

We have AP55 that has had connection issues. Client has to reconnect to the wireless network to gain internet/network connectivity. It looks like it possible has to do with the 2.4 and 5 GHZ on the same SSID. The problems seem to coming from Macbooks. Is there something in the logs that I should look for that will show problems with hardware or configuration issues?

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DirkBolte · Answer

Hi, 
 
 I had some occasions (including myself) in which resetting the Wi-Fi preferences or changing the MTU helped. I changed my MTU to 1280 and had no problem like this since. It seems that every now and then, MacOS' built-in path MTU discovery seems to cause issues. See http://osxdaily.com/2016/09/22/fix-wi-fi-problems-macos-sierra/ for a manual on these. In my case, I had these connection issues when coming out of standby and/or roamed - but it wasn't hard reproducible. 
 
 Kind regards, 
 
 Dirk Bolte