Comment by corford

I've just done something similar in response to a heavy storm that's taken out the fiber where I live (7 weeks now, still hasn't been reconnected). Starlink has been a life saver and works flawlessly (~200Mbps, <35ms latency) but I've also added a cheap 4G data SIM in to the mix too for extra resilience (no 5G coverage where I am but 4G gets ~45Mbs with an external antenna).

Had to get this going quickly so used tplink gear as it was readily accessible and surprisingly it's worked quite well. Used an NX210 (for WiFi to house and the backup 4G sim). Connected the NX210's WAN to an ER605, with Starlink router in WAN1 (in bypass mode) and fiber router in WAN2. This gives me instant fail over across all three and the option of load balancing across fiber and starlink (whenever the fiber comes back). Last step was to get an EAP211 so I could share my starlink over to a neighbour who also lost their fiber after the storm. That has worked well too.

* I'm using a residential starlink plan with the full dish (not mini), mounted with their pipe adapter accessory