I am searching for the most feasible backup route solution for my network. Here is my scenario:
ISP A --sonet--3550-----layer 3 switch primary-----|
\------layer 3 switch secondary--||
ISP B ---rpr --linux rtr---- 2611 -----------2924 sw
The 2 layer3 switches (4006 12.1.19x) are just using static routes to get to the isp. At 1st, I was just going to use a floating static route to ISP B, but, as I found out the hard way, it will not work just directly connected routes ( no dynamic routed proto). I only care about outbound traffic in a failover situation, hosted web site availability is not important in failover mode. I just want the users to be able to access the internet.
A:) implement a dynamic routing protocol locally; both ISPs will not participate, thus making the floating static routes functional
B:) Implement policy based routing with icmp as the deciding factor?
PS. I plan on implementing a 3rd ISP at some point too.