Light-tree based multicast flow aggregation scheme in elastic optical datacenter networks

In this paper, we propose a light-tree based multicast flow aggregation (LT-MFA) scheme which can achieve the cost-efficient multicast service provisioning in elastic optical datacenter networks (EDONs). Moreover, a user-cover ratio based aggregation strategy is proposed for the LT-MFA scheme. An Integer Linear Program (ILP) model and a heuristic algorithm are developed to realize the LT-MFA scheme in the small-scale and large-scale EDONs. Simulations show that the LT-MFA scheme can effectively reduce network cost than conventional light-tree based optical multicasting scheme.