Hello @Ivanx00 

It seems that your issue is not caused by OC200. You can reevaluate your network topology and make sure that there is no loop in the network, as it might be causing broadcast storms leading to network drops.

For further inspection, it's also recommended that connect your PC directly to the EAP110 if possible to see if the computer can get access to the Internet. Have you tried resetting your network, including the router, OC200, and EAP devices? Sometimes a simple restart and reset can help in resolving network anomalies.

  @KyrieM thank you for your response.

for the loop I'll check 

i can connect to the eap because the problem lasts just few seconds. 
when it happens, it will affect all the 10 eap at the same time. 
Tue problem is not only the internet connection that get lost, the problem is that event internal communication didn't work, for example connecting to the oc200 via url 192.68.0.2 (can't load the page). 
after few second of try it works

my iPhone sometimes can't find one of the two ssid for few seconds (the other one still remain with full power), even if I check in the WiFi settings can't find the ssid where I was connected. After few second the ssid is back and the iPhone automatically connects. 
not all the device connected has the problem at the same time, but all the device has problem 

how can I check there are no loops? By checking physically the wiring?

I never changed nothin anyway, can't understand

Thanks a lot 

  @Ivanx00 

Just read your post and noticed you are running the EAP110s on the newest controller (5.12.9), in the release notes only the EAP110 v4 and EAP110 Outdoor v3 are supported with this controller version.   

Are these the versions of hardware you are running?   

  @Philbert yep v.4 and v.3 just checked now

  @Ivanx00 no one can help me?

im really exasperated. Please someon could help me 

  @d0ugmac1 ER6p5 is a new buy, the problem started before and I tried to buy it hoping to solve the problem.

i reboot it at least 3/4 times a week and I have problem always (not depending on how much time I had a reboot)

2.1.2 Build 20230210 Rel.62992

thanks  

  @d0ugmac1 I'll try

All the device connected via lan did never lose connection (even internet connection)

this problem is only via WiFi

When I have this problem Omada controller (192.168.0.2) and all the other device in the network are not reachable for few seconds during the drop, after that (and a lot of imprecation) everything woks properly. 
I can't understand why I lose WiFi connection (I'm standing still during the problem) and the network even disappears on my iPhone settings (but stille remains the other ssid with full connection)

  @d0ugmac1 

I tried and while there isn't internet connectikn (via WiFi) a ping test give me this.

all the device via LAN still work (ping is ok, internet connection is ok)

What should be?