Are you simply just trying to achieve a failover between these two servers? You should probably just look into using a round-robin approach within DNS. What you've outlined probably isn't an ideal way of switching between servers to sort of load balance them.
If you're just looking for a quick way to switch a server when one fails manually though, the above would work. Just write yourself a script to bring up the new IP from the server that goes down, using an alias is probably the easiest approach between the two.
Last edited by trickykid; 08-26-2008 at 09:21 AM.