LTM :: Active/Active pool member configuration

one way to do this is to set the members in Group A to use a special healthcheck which is set to enable TCP Manual Resume. This feature when enabled will automatically disable a member that was down once is start responding to keepalive checks again. so group A members would have this keepalive applied. Group B would not. But be very cautious as once this feature is on you must manually enable the pool members in order bring them back into service!!