As a test of mwan3, I hooked the WAN to a dsl modem and left the 4g modem on the USB. The 300n recognized the connection and and had it up and running quickly. However, no amount of policy changes in mwan3 could get the 300n to utilize both connections. It always defaulted to the wan/dsl even when I changed the metric (in mwan) to 1 for both WAN and Modem (per instructions), the weight of the Modem to 5 (67%) vs the WAN at 3. There was no load balancing happening. Also, when I unplugged the dsl, the 300n did not default back to the 4g modem and I had to reboot, so failover failed too.

 

I’m sure there is a simple change that needs to be done, I just dont know what that is.