Communications - Scientific Letters of the University of Zilina 2011, 13(1):60-66 | DOI: 10.26552/com.C.2011.1.60-66

The Worst Availability as a Parameter for Designing and Reporting on the Network Performances

Ivan Rados1, Ladislav Schwartz2
1 Department of Transmission Systems HT d.d., Mostar, Bosnia and Herzegovina
2 Faculty of Electrical Engineering, University of Zilina, Slovakia

In the introductory part, the reasons why the availability is important are stated as well as the overview of the papers produced so far dealing with the problem of guaranteed availability. Furthermore, the basic concepts on availability are introduced with the special review of the parallel structure which can actually be applied onto the ring network. The principles of protection of the wavelength channel and optical multiplex section which are used in the ring WDM networks are described. Then the availabilities of different link configurations in relation to its protection are defined: without protection, protection using the same optical cable and protection using completely separated optical cables. Then the availability of the WDM ring was analysed which uses protection of the wavelength channel as well as the protection of the optical multiplex section. Furthermore, the expression for the worst availability of the WDM ring was derived and the number of links of the working path which gives the worst availability was determined. The data on the intensity of failures and the mean time to repair of individual components were taken from different literature. In the analysis we assumed that it is about WDM system with 64 wavelengths. At the end of the paper the answer to the question why the worst availability can be taken as a parameter at projecting WDM networks and for the reporting on the network performances was given.

Keywords: WDM, wavelength channel, availability, protection

Published: March 31, 2011  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Rados, I., & Schwartz, L. (2011). The Worst Availability as a Parameter for Designing and Reporting on the Network Performances. Communications - Scientific Letters of the University of Zilina, 13(1), 60-66. doi: 10.26552/com.C.2011.1.60-66
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. MELLO, A.A., PELEGRINI, J.U., RIBERIO, R.P., SCHUPKE, D.A., WALDMAN, H.: Dynamic Provisioning of Shared-Backup Path Protected Connections with Guaranteed Availability Requirements, International Workshop on Guaranteed Optical Service Provisioning, Boston, USA, 2005
    2. DOUGLAS, S.R.: Network Reliability and Algebraic Structures, Oxford University Press : New York, 1991
    3. JONCZY, J.: An algebraic Approach to Network Reliability, Institute of Computer Science and Applied Mathematics, University of Berne, 2008
    4. TRSTENSKY, D., SCHWARTZ, L., TRUNKVALTER, M., BAROS, R.: Reliability of Telecommunication System by Various Repair Regime, Int. Conference ELEKTRO 2004, Advances in Electrical and Electronic Engineering, No. 2, Vol. 3/2004, ZU, Zilina, pp. 25-26, ISSN 1336-1376
    5. WILSON, M.R.: The Quantitative Impact of Survivable Network Architecture on Service Availability, IEEE Communications Magazine, May 1998, pp.122-127 Go to original source...
    6. RADOS, I.: Availability Models for Wavelength Channel Protection in WDM Ring Networks, J. of Electronics and Electrical Engineering, No. 8(88), 2008, pp.81-86, Kaunas University of Technology
    7. MELLO, A.A., QUITERIO, G.S., SCHUPKE, D.A., WALDMAN, H.: Specification of SLA Survivability Requirements for Optical Path Protected Connections, Optical Fiber Communications Conference (OFC), Anaheim, 2006 Go to original source...
    8. ZHANG, J., ZHU, Z., ZANG, H., MUKHERJEE, M.: Service Provisioning to Provide Per-Connection-based Availability-Guarantee in WDM Mesh Networks, Optical Communications Conference (OFC), 2003 Go to original source...
    9. MYKKELTVEIT, A., HELVIK, B.E.: On Provision of Availability Guarantees Using Shared Protection, Optical Network Desing and Modeling (ONDM), 2008 Go to original source...
    10. RADOS, I.: Availability of the optical bidirectional self-healing ring with four fibres with the Multiplex Section Protection, SoftCOM 2008, Split. Go to original source...

    This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content