A framework for traffic engineering and routing in survivable multi-service high bit rates optical networks

Vasilios Pasias*, Dimitrios A. Karras, Rallis C. Papademetriou

*Corresponding author for this work

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


    This paper presents a general framework for Traffic Engineering (TE) of primary and backup paths and routing of Quality of Service (QoS) and Best-Effort (BE) flows in multiservice high bit rales optical networks capable of surviving against single or multiple node and/or link failure(s). The aforementioned framework involves an off-line and an on-line phase. In the off-line phase either a method based on a Integer Linear Programming (ILP) TE problem or a method based on a heuristic TE algorithm provides the primary and backup routes for the QoS-guaranteed flows, where backup paths are required, and the routes for the BE flows. In the on-line phase the QoS and BE flows are routed based on the outputs of the off-line phase. In the case that one or more primary paths fail the corresponding backup paths are used for restoration. However, if one or more backup paths also fail or a backup path is not defined, dynamic restoration is applied utilising a special source-routing algorithm. Implementation issues are also discussed and test results regarding the two off-line TE methods are presented.

    Original languageEnglish
    Title of host publicationProceedings ELMAR-2006 - 48th International Symposium ELMAR-2006 Focused on Multimedia Signal Processing and Communications
    Number of pages5
    Publication statusPublished - 12 Mar 2007
    Event48th International Symposium - Zadar, Croatia
    Duration: 7 Jun 20069 Jun 2006


    Conference48th International Symposium
    Abbreviated titleELMAR-2006
    OtherFocused on Multimedia Signal Processing and Communications


    • 1 + 1/1:1 protection
    • Backup
    • Best-Effort (BE)
    • Integer Linear Programming (ILP)
    • Optical networks
    • Primary
    • QoS routing
    • Quality of Service (QoS)
    • Restoration
    • Survivability
    • Traffic Engineering (TE)
    • Trunk


    Dive into the research topics of 'A framework for traffic engineering and routing in survivable multi-service high bit rates optical networks'. Together they form a unique fingerprint.

    Cite this