A restorable MPLS-based hose-model VPN network

Authors:
Jian Chu;Chin-Tau Lea
Affiliations:
Electronic and Computer Engineering Department, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong;Electronic and Computer Engineering Department, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking
Year:
2007

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Abstract

Design of a restorable MPLS-based Layer-3 VPN network with QoS guarantee is a new and important subject that has not been widely studied before. The main challenge arises from the fact that the Service Level Agreements (SLAs) of a L3-VPN usually only specify the maximum ingress and egress traffic rate, and provide no point-to-point traffic matrix information (i.e., a hose-model VPN). Conventional restoration and traffic engineering techniques do not apply to this type of traffic model. In this paper, we present a restoration network architecture and present two algorithms for solving the routing problem of this type of restoration networks. We demonstrate the effectiveness of our proposed restoration architecture by comparing the throughput performance with other approaches.