MSR931 WAN load balancing + LTE failover How-to?

[pmonardo]

Very simple request and I need help configuring this.

I have 4 WANs connecting to my router

1 in WAN port

3 in LAN port (configured as WAN ports)

LTE failover

Currently I have access over LTE as it has a lower preference. As soon as I make the preference set to 120, I lose access and I get intermittent connectivity from the 4 WANs.

How do I configure the 4 WANs to load balance and have LTE act as a failover?

ip route-static 0.0.0.0 0.0.0.0 GigabitEthernet0/0 <wan1 gw>
 ip route-static 0.0.0.0 0.0.0.0 GigabitEthernet0/1 <wan2 gw>
 ip route-static 0.0.0.0 0.0.0.0 GigabitEthernet0/2 <wan3 gw>
 ip route-static 0.0.0.0 0.0.0.0 GigabitEthernet0/3 <wan4 gw>
 ip route-static 0.0.0.0 0.0.0.0 Cellular-Ethernet1/0 preference 120

This breaks everything.

I have not set a standby interface either.

Will definitely appreicate some help.