I have a 3-node Deco x20 mesh network connected to my wireless, radio-based ISP WAN. Several times each day (sometimes hourly), the x20 will "lose" connection to the ISP and show a red-light. After about 3-4 minutes, it will reconnect automatically. If I manually reboot or power cycle the device, it will reconnect. There are no specific errors listed in the system logs.
What is causing this? I have faithfully checked for and installed available firmware updates every day since I've owned it.