My router is a FIOS Quantum Gateway (FIOS-G1100). I have both 2.4G and 5G enabled on it. I have one outdoor camera which has trouble staying connected to the router on either band. So I thought I would try a range extender. I bought an RE650/AC2600 and got everything up an running. The outdoor camera is able to connect through the RE650.
But the problem is that when the RE650 is plugged in, my router resets once or twice a day, so it'll drop out for about 5 minutes or so. By 'reset' I mean that all devices which are connected through the WiFi lose their network connection, the WiFi light on the router turns off and the power/internet (globe) light starts blinking like it's restarting. Then a couple minutes later the router comes back up and with it the WiFi does as well.
I've tried the RE650 in a few different configurations. I've tried giving it a different SSID than my main Wifi. I've tried it with the same SSID as my WiFi. I've tried with only the 2.4G enabled on the extender. None of those seem to help. So for the past week or two the I've unplugged the RE650 and my router has been fine.
In order to get the hardware and firmware versions of my extender I just plugged it in. And within a minute it took down my router. Router is back up now.
So does anyone know a solution to this problem? Are there any settings on my router or extender which might fix this?
2020-03-17 UPDATE: Adding my solution here so you don't have to search through the whole thread.
As @Carl suggested, I've enabled only 5G band from extender to router/host and enabled only 2.4G band on the extended network. No router resets for the week after I made this change.
2020-05-18 UPDATE 2: After working fine for a couple of months my router once again started resetting about 2 weeks ago. It reset at least 3 times in 2 days. I checked the settings on the extender and it was still set to use 5G on one side and 2.4G on the other. I unplugged the extender and the router problem has stopped.