This paper describes a new paradigm to realize network virtualization and defines two novel concepts: Network Planes and Parallel Internets to achieve service differentiation. These concepts are packaged in a technology-agnostic and a multi-dimensional approach for the delivery of Internet Protocol (IP) service differentiation, both intra-and inter-domain. The definition of the aforementioned concepts covers several dimensions mainly routing, forwarding and traffic management ones. Unlike some radical "Post IP" proposals, this paper advocates an evolutionary approach for enhancing the level of experienced connectivity services (including Quality of Service and Robustness) and therefore to enhance the Internet of the future. Both the rationale and the merits of our approach are explained. In addition, this paper focuses on the critical problem of determining the Network Planes and Parallel Internets to be engineered by a given IP Network Provider to meet the service connectivity requirements of external Service Providers. Finally, in order to assess the validity of the proposed approach, a Network Plane Emulation Platform is described.
Abstract-Next generation networks are required to provide bandwidth on-demand for sessions with fine-time granularity. In this sense, centralized CAC (Connection Admission Control) approaches could suffer from scalability problems if the number of requests for connections is excessive. In this paper we investigate local CAC schemes where the admission decisions are performed at the network edges, based on precalculated admission quotas.
In this paper we introduce the concepts of Network Planes and Parallel Internets, with the objective of designing and implementing a lightweight solution for viable end-to-end QoS provisioning. The proposed solution can be deployed with very small incremental additions to the existing best-effort Internet. Through Network Plane engineering and interconnection, mainly by means of intraand inter-domain routing differentiation, end-to-end service differentiation across the Internet can be achieved.
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