This work proposes an algorithm called k-Critical Node to solve the controller placement problem in Software Defined Networks. K-Critical finds the minimum number of controllers to satisfy a target communication delay between controller and nodes, Dreq. In addition, the controller selected create a management architecture that improves the subjacent network performance. In this work we focus on the controllers selection procedure, and show the desired management architecture characteristics that optimize the control and management of the network. The results show that our management trees balance the load among them and reduce the data loss.

Peer Reviewed