Hierarchical restoration scheme for multiple failures in GMPLS networks

Suk Young Lee, Chul Kim, D. Griffith

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


It is expected that GMPLS-based recovery could become a viable option for obtaining faster restoration than layer 3 rerouting. Even though dedicated restoration ensures restorability of connections, exclusive use of dedicated scheme would result in wasting network resources, especially in case of providing for multiple failures. A range of restoration schemes have been proposed that use the concept of sharing capacity to improve efficiency. However, the case of multiple simultaneous failures has not been considered. In this paper we propose a hierarchical scheme for handling multiple simultaneous failures, where hierarchical Shared Risk Link Groups (SRLGs) are applied. We also introduce Backup Group Multiplexing (BGM) into our hierarchical scheme to precipitate the restoration of multiple Label Switched Paths (LSPs) with failures all at once. Furthermore, the proposed scheme selects a backup path with enough resources to satisfy renegotiated Quality of Service (QoS) of each backup group, among M backup paths. Our simulation results demonstrate that our scheme utilizes bandwidth more efficiently through multiplexing gain.

Original languageEnglish
Title of host publicationProceedings - International Conference on Parallel Processing Workshops, ICPPW 2002
EditorsStephan Olariu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)0769516807
Publication statusPublished - 2002
EventInternational Conference on Parallel Processing Workshops, ICPPW 2002 - Vancouver, Canada
Duration: 2002 Aug 182002 Aug 21

Publication series

NameProceedings of the International Conference on Parallel Processing Workshops
ISSN (Print)1530-2016


OtherInternational Conference on Parallel Processing Workshops, ICPPW 2002

Bibliographical note

Publisher Copyright:
© 2002 IEEE.

All Science Journal Classification (ASJC) codes

  • Software
  • Mathematics(all)
  • Hardware and Architecture


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