Redundant servers with the same ip address on different PEs

I found the following at somewhere
 
I have setup of 2 servers on 2 different PEs and work as a redundant .IF S1 becomes down ,S2 comes up with the same IP address of S1 .
how can i configure that setup so that all the network can reach the 2 servers when any of them is up .
I thought about the Mobile IP but the servers on VRF . Is there any different technology other than the mobile ip to solve this issue ?
 
 
I hope i can find a solution for that too i almost have the same problem

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Received on Sun Dec 26 2010 - 21:47:33 ART