The easiest way is to change the Port of the Real Server to something other than the value you have set. This action will result in a failure of monitoring traffic to the Real Server.
If you now look at the Instances you have, you will notice that the Elastic IP has moved from one ADC to another.
If Failback has been selected, changing the Real Server’s Port back to the original value will result in the Elastic IP being changed back to the Preferred Destination.
