A Robust Controllers’ Negotiation Model in Multi-Domain SDN Environments

Abstract

In multi-domain SDN environments, the controllers need to exchange information frequently. In real situation, there may have some faulty controllers. Besides, the connection between controllers may be disturbed. All this faulty components may cause that fault-free controllers getting the wrong information, and the network cannot work well. Hence, in this paper, a robust controllers’ negotiation mechanism has been proposed. Based on the mechanism, all fault-free controllers can efficiently and robustly to get a common score about the information which are needed to be shared by at most three rounds of score exchange phases. Moreover, when there are at most (