If you have personally used and would recommend an internet failover solution in the ~$200 USD range for the purposes of internet failover, please tell me about it.
I have a perfectly functional home network using residential cable for internet. The cable modem feeds into an old (but reliable) Cisco NAT/Firewall router. The Cisco is the gateway and handles all my router needs, but unfortunately it lacks the ports (and probably firmware) necessary to accommodate the addition of a DSL failover line.
So right now my idea is to obtain a failover appliance that I can plug both DSL & Cable into, for the sole purpose of feeding my Cisco transparently failed-over internet bandwidth. The failover appliance itself does not need to be feature-rich, it just needs to know when the Cable goes out and perform the failover task reliably. So suggestions along this line or any suggestion is welcome.