@Tobias16 

Try create a test 5Ghz only SSID, security choose WPA2-PSK, AES.

  @Tobias16 I have a similar problem on a much smaller setup. I have a 225, 265HD and a EAP615-Wall . I just added the last one in the mix recently and this is when I started having problems.

We both are running mainly a WIFI 5 network with 1 WIFI 6 AP. Once devices (mainly Apple) see that Wifi6 network, they tend to hang on to it even tough they have a stronger WIFI5 signal nearby.

From Apple's docs: 

If multiple 5 GHz SSIDs are scored the same, iOS chooses a network based on the following criteria:

• 802.11ax is preferred over 802.11ac

https://support.apple.com/en-bn/HT203068

Once I removed the EAP615 from my network setup, roaming started working again properly.

Now, I wish I could use the EAP 615 in my network,  but as far as I can tell there's no way to disable WIFI6 from the Omada controller (even tough the standalone firmware for the AP has that option)

  @Somnus 

Thanks for your answer. Sadly I am having the same issues with a 5GHz network...

  @andrei.cmn 

Thank you! I will remove the WiFi 6 router from my envoirment. I ll let you know if this will change my situation.

  @Tobias16 Hi Tobias, I just found that the problem is related to MAC address randomization which is a feature under WiFi security/privacy settings incorporated to new iOS and Android devices.

If you just turn off MAC randomization on your device for your SSID, then your devices will get connected to your network and will work like a charm.

Cheers,

Mario

  @Nextcomm 

Hello

Thank you for your answer. This was also one of my first thoughts. But I had disabled this function from the beginning. It is not related to that.

  @Tobias16 I think I figured it out.

The issue is not WIFI ax/ac handover, rather the WPA encryption. The WIFI 6 EAP will default to using WPA3, while the others will only be able to use WPA2.

Under Settings - > Wireless Networks -> WLAN go to each network that is active on the 5Ghz band and edit it.

From there disable the 6Ghz Band and make sure security is set to WPA Personal. Then under Advanced Settings select WPA/WPA2-PSK/AES instead of WPA3.

This fixed the issue for me and now I can roam between APs without any issues (tested with a Macbook Air M1, iPhone 12 and a iPhone 12 Pro).

Hope this helps you too.

  @andrei.cmn Hi, thanks for your reply.

I have my WLAN settings as you just described, but that didn't solve my problem. Are you running the latest controller version (5.7.6)?

Here's my controller information:

Controller Version: 5.7.6

Model: OC200 2.0

Firmware Version: 2.7.7 Build 20221206 Rel.58608

In my case the only workaround that I could find was to disable the network privacy settings on IOS and Android devices for the specific SSID on both 2.4 and 5GHz

The WPA mode that I'm using is WPA/WPA2-PSK/AES

Do you know if there's a latest controller version (beta) that I can test?

Thanks,

Mario 

  @Tobias16 Hey, I just forgot to mention that I'm also registering tons of WPA Authentication timeout/failure as you can see in the screenshot below.

  @Nextcomm Looks like you are still hitting WPA Auth issues.

Did you try forgetting the network from your device and inputting the password again? Or on iPhone Reset the network settings ?

Devices that already authenticated with WPA3 will keep on trying to do that until you reconfigure them.

My setup is similar:

Controller Version

5.7.6

Model

OC200 1.0

Firmware Version

1.21.7 Build 20221206 Rel.58608

Here's how I configured my wireless network: