We’ve encountered a substantial issue with our Aruba deployment, I suppose one of the major faults of using many of the default settings/profiles with the AP615 devices we are using (thankfully it is not affecting the AP635). The flaw is that the Flexible Dual Band: Automatic profile for the APs has been making it that we have no 5Ghz network being broadcast on ANY of our 1000+ AP615 devices. While troubleshooting I pieced together that manually setting it to 5GHz and 2.4GHz the APs then broadcast the bands they are supposed to.
After spending a bit of time reading about the settings, it is my understanding that this issue of the ghost 5GHz may have been of our own doing as it is meant to broadcast 2.5 and 5 OR 6G based on user “requests/ability”. I believe that when we disabled 6GHz in our WLAN configurations it may have caused a conflict with the Flexible Dual Band settings
We currently have a ticket in to rectify this as disabling 6GHz from the WLAN ssid SHOULD remove it from the options provided by the “Automatic” Flexible Dual Band.