Towards large-scale network virtualization

  • Authors:
  • Panagiotis Papadimitriou;Ines Houidi;Wajdi Louati;Djamal Zeghlache;Christoph Werle;Roland Bless;Laurent Mathy

  • Affiliations:
  • Institute of Communications Technology, Leibniz University of Hannover, Germany;Institut Telecom, Telecom SudParis, France;Institut Telecom, Telecom SudParis, France;Institut Telecom, Telecom SudParis, France;Karlsruhe Institute of Technology, Germany;Karlsruhe Institute of Technology, Germany;Computing Department, Lancaster University, UK

  • Venue:
  • WWIC'12 Proceedings of the 10th international conference on Wired/Wireless Internet Communication
  • Year:
  • 2012

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Abstract

Most existing virtual network (VN) provisioning approaches assume a single administrative domain and therefore, VN deployments are limited to the geographic footprint of the substrate provider. To enable wide-area VN provisioning, network virtualization architectures need to address the intricacies of inter-domain aspects, i.e., how to provision VNs with limited control and knowledge of any aspect of the physical infrastructure. To this end, we present a framework for large-scale VN provisioning. We decompose VN provisioning into multiple steps to overcome the implications of limited information on resource discovery and allocation. We present a new resource selection algorithm with simultaneous node and link mapping to assign resources within each domain. We use a signaling protocol that integrates resource reservations for virtual link setup with Quality-of-Service guarantees. Our experimental results show that small VNs can be provisioned within a few seconds.