I have the following configuration: a 1841 Cisco Router, IOS ver 12.3(4) and two internet providers, each configured with it's own public IP, which is NATed.
I used "route-maps", so is the primary connection goes down (in the sense that the L1 connection goes down (broken cable, pull cable out), the redundant ISP connection is automatically inserted in the ROUTE TABLE.
All fine and dandy, except that when the internet "goes down", 99.9% of the time it's because of the ISP's Gateway Problem (not a switchport problem), so even if the Internet goes down, the backup connection doesn't activate, unless i manually remove the cable from the router.
What i want to do is base this "redundant ISP plan" on ICMP packets..so if the gateway dowsn't respond to pings for x seconds, activate the backup route and keep monitoring until the connection comes back up.
Any suggestions ?