Problems with communication between devices on 2.4 and 5GHz networks
I have a BT smart hub with the 2.4 and 5GHz Wifi bands separated with different SSIDs. Most of the time this works correctly but every so often devices connected to the 2.4GHz network stop being able to see devices connected to the 5GHz network, although the 5GHz devices are still connected and able to access the Internet. A reboot of the router resolves the problem
Any ideas why this happens and how to resolve other than disabling the 5GHz band?