I have a Cisco 1841 acting as my core router (with HSRP to another 1841). I have 2 more routers on which MPLS ckt is getting terminated. My branches are getting connected to my LAN via MPLS. LAN users are accessing internet via core route that is 1841. What I want to do is if my core router goes down my LAN internet traffic revert on MPLS ckt. If one MPLS ckt is also down it revert on second MPLS router. Entire LAN have ospf topology. Pls suggest ur valuable output. Is SLA based routing support on this, if yes HOW??