Topology-Risk Balance Based Virtual Network Mapping Algorithm of Elastic Optical Networks

As virtual networks services emerge increasingly with higher requirement of reliability and survivalbility, great challenges and demands are presented to the Elastic Optical Networks (EON). Aimed to solve this problem, this paper proposes a risk awareness based virtual network mapping stragegy of elastic optical network. In this article, a risk awareness model of virtual optical network is established, which includs node risk degree, link risk degree and other factors together. Moreover, the risk awareness model based virtual network mapping strategy is proposed with detailed procedures. Test results show that the proposed approach is able to improved services security supporting ability of EON.