We have the following network setup (see attachment). What we would like to do is the following:
*Under normal circumstances, the wireless network connection should be the only active link. All data must pass there.
*If there is a problem with the wireless network (either a hardware failure, or wireless link failure), the secondary link should take over (if possible, without any downtime).
Some additional information:
*The machines that provide the wireless link are in bridge mode, and this cannot be changed.
*The ISP routers are not managed by us, so ideally the configuration there should not be changed.
I can see 2 options:
-Use a routing protocol on both 800 series routers, and place a static route on both default gateways with a higher metric to the secondary link).
-Use Cisco IP SLA (i have no experience using this so if anyone has hands-on experience, this would be much appreciated).
Can anyone give me some advice on which option is the best, or if there is another possibility. If using a routing protocol is the best, which protocol would you advise (rip?).