We have a remote office which is connected via fiber and also also microwave links. The fiber is a direct connection terminated into an ONT and then copper to the switches. We have the layer 3 switches terminating both sides of the fiber. Then we have also the routers unlinked to those switches. The routers terminate our microwave t1 connections. My goal is to have the fiber be the main link and if it were to go down then to failover to the microwave. Not sure how to achieve this with the switches showing the fiber as directly connected.