Resource sharing architecture for multi-datacenter environment in OXC based networks

Over the past few years, network carriers have tended to consider their network function to be virtualized. It is possible to migrate virtualized network functions (VNFs) across datacenters for auto scaling and auto healing when traffic concentration or failure occurs. However, networks must provide a new network path corresponding to the new traffic flow generated by VNF migration. The problem is that those added network paths cause a cost increase. We propose two cost effective resource sharing methods that use transport software defined network (SDN) and optical cross connect (OXC) to reduce the number of servers and network CAPEX.