Restorability versus Efficiency in (1:1)n protection schemes for optical networks

David Griffith, Kotikalapudi Sriram, Su Kyoung Lee, Stephan Klink, Nada Golmie

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


As network utilization continues to grow in the coming years, there will be increased pressure on network operators to use traffic engineering to provision resources more efficiently. One way to do this is to allow backup paths associated with disjoint working paths to share bandwidth. Increasing the amount of sharing will naturally increase the risk that a failed working path will either be unrecovered or forced to use dynamic recovery mechanisms. To examine the trade-offs between robustness and efficiency and to develop useful performance bounds, we develop theoretical models for (1:1)n recovery schemes that are independent of the network's topology and management plane. We confirm our results using simulations of uncorrelated failures in a wide-area optical network with various degrees of resource sharing.

Original languageEnglish
Pages (from-to)1634-1638
Number of pages5
JournalIEEE International Conference on Communications
Publication statusPublished - 2004
Event2004 IEEE International Conference on Communications - Paris, France
Duration: 2004 Jun 202004 Jun 24

Bibliographical note

Funding Information:
The work was funded as part of the European Commission Quality of Life and Management of Living Resources Fifth Framework Programme. QLRT-1999-001 55 (MONTECARLO project).

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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