Faiilover based on data consumption

General
1

I want to setup a MAX BR1 Pro 5G in the following configuration:

WAN service on WAN ethernet port. It’s a good service, but metered and becoming expensive.
Cellular Sim in slot.

WAN is primary, Cellular is Secondary.

I want it to failover to Cellular if either of the following reaches:
a). the WAN goes down (or dramatic drop in quality).
b). I consume more than X GB on the WAN.

b is the part that I’m not sure of. I believe that this is what the “bandwidth allowance monitor” is used for.

A 2nd / alternate configuration would be to just throttle back the bandwidth of the WAN. ie only allow 50mbps on that interface. does peplink have an option for that?

2

Bandwidth Allowance Monitor is correct on how you would do this. There isn’t really an option to lower in-band throughput, but there is a way to allow management traffic only (control plane).

Point A (WAN goes down) is built in by default as WAN is in Priority 1 on the router and Cellular is Priority 2. “Dramatic drop in quality” is subjective, but you have a few knobs in the configuration around how to determine poor uplink quality to initiate a failover.