DGND3700v2 / MR2100 - Dual Connection

[timgbull]

Due to hopeless fixed line ADSL speeds to the router I have added the Nighthawk to benefit from a good 4G signal. They serve a wired home network comprising a desktop and 3 printers.

I want to use the 4G connection as default, through a wired ethernet connection, with internet access via the ADSL only when 4G is poor or unavailable.

Is this configuration feasible, and if so, how best to set up ?

[plemans]

You'd want a device with failover support. I don't believe the DGND3700 has that option.