Towards Dynamic Virtual Private Service Networks: Design and Self-Management

The aim of this paper is to propose a solution for service virtualization and structure within what we call the next generation service (NGS) context. For this purpose, we first propose to distinguish services from networks by separating the network level and the service level. Afterwards, we propose to generalize and apply networking concepts within the service level. This leads us to introduce the necessary elements to support service virtualization, i.e. virtual private service networks (VPSNs) and virtual service networks (VSNs). The VPSN is the private network that translates the logic of the service required by the user and proactively maintains the end-to-end QoS to meet the service level agreement. The VSNs provide means to support the VPSNs using self-management capabilities to anticipate the local QoS degradation and take the necessary preventive actions