Hey Frama, I think I've experienced what you're going through. Here's a few things to try..
1. Make sure you've updated to latest stable release which is 3.4.3.2-r6
Try the following settings one by one until you find something that helps. If it doesn't fix the issue, set it back the way it was and go onto the next setting:
2. Under radio settings, try disabling 'airtime fairness'
3. Under radio settings, set Canidate channels to 'specific' and then using the WiFi anaylizer to find a clean channel, set a specific channel
4. Under radio settings, try to disabling 'Auto RF'
5. Under radio settings, try to disable Interference Avoidence
6. Under the WLAN settings, try setting 'band steering' to disabled
7. Under the WLAN settings, disable both fast roaming standards and 802.11w state (I think these are disabled by default)
I have sent you a mail attached with my tech support file. Please check email and let me know is there any miss configtion on my system. Thank you so much.
Thanks Nuphuc for sharing AP's tech dump file. Can you please answer my following queries /information required
How AP’s are located
Distance between clients to AP’s
How frequently you are seeing this issue
Is it possible to give us the remote access of your network ? If yes can you please provide access to CnMaestro and AP's If it is not possible provide your complete network diagram configuration details.
I have also come across such situation where clients complains about random disconnection and reconnection. But in later stages, I found the issue was basically arised from anti-virus. After install new patches by anti-virus central console by client ,the issue was automatically dissapeared. If possible you can check the issue one by one as you have mentioned you are having only three machines. I may not be 100% correct in your case but it is my experience which has same scenario as you are.
If you are sitting in front of AP that is set on max Tx power, clients may disconnect because the AP is too loud. In that case decrease Tx power settings. I had many examples of such case with customers.
That could be one option ofcourse.
Could you guys mention which kind of clients are disconnecting? Smartphones, tablets, laptops with integrated wifi cards, wifi USB sticks, anything else?
Thanks Eric for your update. I am apply the same in one of the AP which shows similar behaviour for last couple of days after installation. Let's see the result. Hope ,it would also work in my case also.