1st Annual Conference on Broadband Networks

Research Article

Threshold based selective survivability for optical WDM mesh networks

  • @INPROCEEDINGS{10.1109/BROADNETS.2004.86,
        author={Ramakrishna Shenai and Muthaiah Venkatachalam and Christian Maciocco and Krishna Sivalingam},
        title={Threshold based selective survivability for optical WDM mesh networks},
        proceedings={1st Annual Conference on Broadband Networks},
  • Ramakrishna Shenai
    Muthaiah Venkatachalam
    Christian Maciocco
    Krishna Sivalingam
    Year: 2004
    Threshold based selective survivability for optical WDM mesh networks
    DOI: 10.1109/BROADNETS.2004.86
Ramakrishna Shenai1, Muthaiah Venkatachalam2, Christian Maciocco2, Krishna Sivalingam1,*
  • 1: Department of CSEE, University of Maryland, Baltimore County (UMBC), Baltimore, MD 21250
  • 2: Intel Corporation, Hillsboro, OR 97124
*Contact email: krishna@umbc.edu


This paper presents survivability mechanisms that attempt to improve the overall restoration efficiency of dynamic link restoration in optical WDM mesh networks. The proposed mechanisms make use of network state information such as link load in order to identify critical network sections (such as links or segments) that are subsequently protected by selectively assigning backup capacity ahead of failures. The first approach, termed "threshold based selective link restoration", utilizes existing link load information to identify critical links, and the second approach, termed "threshold based selective segment restoration", employs data-analysis techniques to identify critical segments. The overall goal of the proposed algorithms is to improve the restoration efficiency by providing a trade-off between proactive protection and reactive restoration. The experimental results indicate that under high loads, the proposed approaches maintain a consistent restoration efficiency that is at least 10% when compared to dynamic restoration.