Multiple dedicated end-to-service path protection (MDESPP) scheme in optical distributed datacenter networks

To improve the local accessibility performance, some important services are usually replicated and maintained in multiple datacenters. A user can request any datacenter which hosts the required service. The traditional end-to-end path is gradually replaced by the end-to-service path. To resist the frequently occurred natural disasters or human-made faults, survivability technologies need to be deployed. The dedicated path protection scheme which is simple and easily conducted has become a practical approach to deal with random concurrent multi-failures. In this paper, we study the multiple dedicated end-to-service path protection (MDESPP) scheme in optical distributed datacenter networks (ODDNs). An Integer Linear Program (ILP) formulation and a heuristic algorithm are developed for the MDESPP scheme. Numerical results show that the proposed MDESPP scheme can greatly improve success rate compared with traditional end-to-end path protection, and is easy to be conducted.