White Papers

QoS-Based Virtual Private Network Design for an MPLS Network

Tags: circuit-switched, atm, qos, mpls, vpn, network

Overview In this paper, a VPN design model is proposed for the Next Generation Internet (NGI). With the use of MultiProtocol Label Switching (MPLS) in a backbone network, it is possible to create multiple logical sink-trees (directed multipoint-to-point trees ending at one exit node) carrying traffic of multiple VPNs. This makes the VPN design problem with MPLS different from those of circuit-switched networks and connection-oriented packet networks such as ATM. A big question is how to construct a tree and how to incorporate it in the network design model. Here, the VPN design is modeled as a mixed Integer Programming (InP) optimization problem to minimize the cost of laying out a VPN supporting different traffic types and service classes on a given topology while meeting QoS requirements.

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Publisher: University of Pittsburgh
File Format: PDF
Date Published: Jun 30, 2008
Format: White Papers
Topics: MPLS, VPNs, Quality of Service

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