My office is connected to the internet via Fiber, and Microwave as backup as I planned. Both Fiber and Microwave are on the bridge Mode. When I plugg the both cables to the Cisco switch, the internet would connect through Microwave as priority, I don't know why, but fiber stands as Backup.
Here is my question: How can I setup the Fiber as primary IP connectivity, and the Microwave as a Backup connectivty, these are configured as a bridge? Is there any type of setting priority on the interfaces, so if fiber fails the backup starts automatically? Please note that I am not looking for HSRP, IPSLA or VRRP since these are the routing protocols, and it will not work for this network.