3rd International ICST Conference on Broadband Communications, Networks, and Systems

Research Article

The Performance of Periodic Link-State Update in Wavelength-Routed Networks

  • @INPROCEEDINGS{10.1109/BROADNETS.2006.4374370,
        author={Shu  Shen and Gaoxi Xiao and Tee Hiang  Cheng},
        title={The Performance of Periodic Link-State Update in Wavelength-Routed Networks},
        proceedings={3rd International ICST Conference on Broadband Communications, Networks, and Systems},
        publisher={IEEE},
        proceedings_a={BROADNETS},
        year={2006},
        month={10},
        keywords={},
        doi={10.1109/BROADNETS.2006.4374370}
    }
    
  • Shu Shen
    Gaoxi Xiao
    Tee Hiang Cheng
    Year: 2006
    The Performance of Periodic Link-State Update in Wavelength-Routed Networks
    BROADNETS
    IEEE
    DOI: 10.1109/BROADNETS.2006.4374370
Shu Shen1,*, Gaoxi Xiao2,*, Tee Hiang Cheng2,*
  • 1: Shanghai R&D Center, 42Networks AB, 1105, 1 Baoqin Rd., Shanghai, China 200031
  • 2: School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
*Contact email: shenshu@ieee.org, egxxiao@ntu.edu.sg, ethcheng@ntu.edu.sg

Abstract

Distributed lightpath establishment in wavelength- routed networks requires up-to-date link-state information to achieve blocking performance target. Invalid routing and wavelength assignment decisions caused by inaccurate link-state information may degrade network performance significantly as the lightpaths become more and more dynamic. In this paper, we evaluate the performance of periodic link-state update, where link-state information is exchanged between network nodes at regular intervals. By proposing an accurate analytical model as well as by carrying out extensive simulations, we show how different components of network blocking probability are affected by inaccurate information under different traffic loads, and provide insights into the high sensitivity of blocking performance to link- state update interval under light traffic loads. We demonstrate how the sensitivity could be affected by network connectivity as well.