Dynamic protection using integrated-routing approach in IP-over-WDM networks

  • Authors:
  • Q. Zheng;G. Mohan

  • Affiliations:
  • Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576, Singapore;Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576, Singapore

  • Venue:
  • Computer Networks: The International Journal of Computer and Telecommunications Networking
  • Year:
  • 2003

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Abstract

This paper presents an efficient protection scheme to dynamically allocate restorable bandwidth-guaranteed paths in integrated IP-over-wavelength division multiplexing (WDM) networks. A restorable bandwidth-guaranteed path implies an active path and another link-disjoint backup path both with the required bandwidth. In this paper: we propose two integrated-routing algorithms: hop-based integrated-routing algorithm (HIRA) and bandwidth-based integrated-routing algorithm (BIRA) to allocate the paths. We use connection blocking probability and number of optical-electrical-optical (o-e-o) conversions as performance metrics. Through extensive simulation experiments, we demonstrate that our algorithms perform better than other existing approaches.