Abstract

In this paper, we propose a heterogeneous risk aware Software-Defined Networking (SDN) migration method for designing survivable networks in the face of multiple correlated failures. The migration method, which is implemented in one shot, specifies how many nodes of each SDN implementation are needed, and where such nodes must be located, in order to yield an SDN migrated network with maximal survivability, when multiple correlated failures impact the entire network connectivity. We formulated the survivable SDN migration problem through integer optimization, where the proposed cost function assesses the survivability of the migrated network in terms of the number of connected components after a failure. The numerical results calculated over test networks show the capability of migration method to provide survivable SDN topologies, which trade-off the heterogeneity in the SDN implementations and the number of shared risks.