I am trying to implement a solution by which my company can achieve 100% network availability, the scenario is as following.
we have two internal routers 3361 running IOS 12.2 (26) as backup and 12.3(11)T as active with EIGRP + many static routes to our partner networks and remote branches connecting through either TDM or MPLS connections.
what I need is that if for instance one the router fails due to any possible reason HW or SW, the other router should immediately be able to route all the traffic with any downtime.
In my head I have two options to work on
1. IP SLA
if there is any other way of achieving the same or if i use any one of the above mentioned method which should be the most preferred one and likely to achieve the desired results.