VPN scalability over high performance backbones Evaluating MPLS VPN against traditional approaches

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  • Venue:
  • ISCC '03 Proceedings of the Eighth IEEE International Symposium on Computers and Communications
  • Year:
  • 2003

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Abstract

The rapid growth of the Internet and the widespreaddeployment of networks built around the InternetProtocol suite are creating a demand for new capabilitiesin IP networks. The IP-based virtual private network(VPN) technology is rapidly becoming the foundation forthe delivery of future Internet services, and many serviceproviders are offering value-added applications on top oftheir VPN transport networks. Two unique andcomplementary architectures based on traditionalindustry standard encrypted tunnels (IPSec) and stilldeveloping Multiprotocol Label Switching (MPLS)technologies are emerging to form the predominantframework for delivery of high performance VPNservices. We analyzed the strengths and the weaknesses ofboth the approaches, and compared their performanceand scalability features by carefully testing them againstthe requirements of the future optical high performancebackbones. Our technical considerations andexperimental results strongly emphasized the betterscalability and reliability of the MPLS/BGP model thatseems to be the most promising approach for theprovisioning of VPN services on the future Giga-speedoptical backbones.