I have two separate data connections from local carriers, Qwest and Cox Cable. They both hand-off cat 5, and qwest has one public interface homed on the circuit, and cox has 3 public ip addresses homed on the circuit. I want to put a front end device that will provide fault tolerance or fail over.
inside the networks I have VOIP and data on one side (qwest), and business to business applications on the other side(cox) and I understand if I had true fail over I would have to engineer the applications to adapt to any changes, but primarily I am looking for a low-cost router that would provide failover / redundancy so that my internal network could access the outside world if one circuit or the other went down. I also would like some external clients to be able to access my internal resources regardless of whether or not one or the other went down (dynamic DNS). If you could recommend a router for the front end and possibly a strategy that would be helpful.