We have a site-to site VPN connection(Home Office-to-site). The ISP at the site has provided a leased line as the primary Internet connection, as well as an ISDN connection because of frequent problems with the Primary connection. I've built GRE Tunnels to both the Serial Interface and to the BRI interface. I also use a split tunnel, to provide direct Internet access at the site.
What's the best way to provide dynamic failover at the site between the Serial and the ISDN connections to the ISP?
