I have a device that needs to connect (and stay connected) to 2.4, but when it connected it went to 5. I tried to create a reservation for the IP, but I can't seem to figure out how to switch and lock the device to 2.4. It's a NordicTrack bike that runs android. I called their customer support and they told me to needs to be on 2.4. Hopefully someone can help on this one. Thanks!
WiFi client devices decide which band to connect to. If that device only has a 2.4GHz radio, it will only connect at 2.4GHz. If it has a dual-band radio, it will connect to one or the other band, but how it decides to do that is up to that device.
Thanks for checking in. Unfortunately I ended up having to get another router that has 2.4 and 5 separate and just set it to 2.4. According the NordicTrack tech support it is supposed to support 5GHz with no problems, but they can’t figure out why it won’t stay connected. For now I had to disconnect my mesh set up (which really stinks because it works awesome). Do you know if there is any way to set up the mesh system and have the separate router along side so I can just run the the bike on the router with 2.4 until they come up with a fix?
Sorry to hear you've had some difficulty still getting that to work. All the mesh networks run the 2.4 and 5GHz bands at the same time. I do have one workaround suggestion that will seem a bit weird, but it should work. How far away is your NordicTrack away from your nearest WiFi point? The reason I ask is that 2.4GHz has a longer range than 5GHz, so the outer edges of your network are almost always going to be 2.4GHz. If your WiFi point is close to the NordicTrack, you might be able to force it to connect to 2.4GHz by temporarily moving your point across the home so that it is only seeing the 2.4GHz signal. Once it connects during setup, you can move the point back and it should remain connected to 2.4GHz after a successful setup.
If that's something you're able to try, let me know if it works. We've seen that work for others that have devices that are struggling to get 2.4GHz connections in place.