From the available literature, we have identified the lack of a simple, low system over-load, and distributed solution to manage a dynamic cluster of synchronized controllers, following the control workload trend. Thus, the current work investigates a solution that uses a multicast East/Westbound protocol for orchestrating any number of SDN controllers in a distributed way. Considering scenarios where suddenly the amount of new data flows changes, the number of active controllers is dynamically tunned to ef-ficiently process the varying workload associated to the controlled switching devices, which are in parallel continuously and correctly redistributed among all the active con-trollers.