A Survey on Virtual Network Embedding in Optical Cloud Data Center Networks

An investigation on researches of technologies and applications tailored to optical-connection cloud data center networks (OCDCNs) is made in this article, moreover, the existing approaches of virtual network embedding (VNE) and future challenges are summarized for OCDCNs. Also, we propose a promising VNE solution in OCDCNs integrating both elastic optical networks and virtual concatenation technology.