Digi 6350-SR User Manual page 41

Dual WAN configurations
It is important to note that the two SIM slots cannot be leveraged simultaneously for load balancing;
the load must be shared between the cellular modem and the wireless internet connection. The
Weight of an interface establishes its proportional contribution relative to the weight of its
complimentary interface.
For example, setting the Ethernet WAN to a weight of 20 and the Cellular WAN to a weight of 5
establishes a 4:1 ratio—the Ethernet interface will handle 4 times the amount of data with this
configuration.
Digi 6350-SR/6355-SR LTE Router User Guide
Load balancing
41