Management of Virtual Network Resources and Services

The aim of the paper is to discuss various resources and services management strategies as dependent on equilibrium between required and available amount of resources in virtual networks environment. It is assumed that substrate virtual network resources are divided and assigned to diversified virtual networks. The latter may be organized to support application services delivery according to various business models. Some issues related to resources provisioning in virtual networks are discussed taking into account various approached to estimate required amount of resources for virtual networks and various techniques to control virtual network resources utilization. Some attention is devoted to expropriation of services with lower priorities as an approach allowing to collect required amount of resources necessary to deliver high-priority services at required quality of service level.