You may need to create a script to detect the connection. If it is down, switch to another router. However, it is better to have a dual WAN router. These search results may help,
What's Dual WAN or Load Balance RouterA Dual WAN router or called Load Balance Router allows a router to use multiple paths to a destination when forwarding packets. With the ability to connect ...
www.howtonetworking.com/whatis/dualwanrouter1.htm
Two gateways for redudancy
Two gateways for redundancy. Q: I have two firewalls/gateways to the internet. The PRIMARY is 10.0.0.1 and the SECONDARY 10.0.0.2. ...
www.howtonetworking.com/Routers/2gateways.htm
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
I would like to setup two wireless connections on my XP-Pro gaming
computer. Each wireless connection is through a different router that
connects to a different ISP. If one internet connection fails is XP
smart enough to switch over to the other connection and keep the
application running? Thanks.