WebLogic DR solution, virtual host on F5 question

 Hi,I have created my WL environment, following the doc E12037-07

Now, I need to create a DR solution for this environment.   For that I wll need to create vurtual hosts on the load balancer.

Ex.  I will need to create a virtual host on the load balancer, that will be associated with a pool of two servers, one in source env, srv1 and the other one in the DR env, srv2.  At the time when the source env is up, srv1 will be enabled in the pool, and srv2 disabled.  During the switchover, srv1 will be disabled and srv2 enabled in the pool.