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Availability analysis under multiple link failures in WDM networks with shared-link connections

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Abstract

In optical Wavelength Division Multiplexing (WDM) networks, different protection schemes have been proposed in the literature, namely, dedicated protection and shared protection. Shared protection techniques significantly reduce the required spare capacity by providing the same level of availability as dedicated protection. However, current mission critical applications (which heavily depend on the availability of communication resources) require connection availability in the order of 99.999% or higher, which corresponds to a downtime of almost 5 min a year on the average. Therefore, in order to satisfy a connection serviceavailability requirement defined by the users Service Level Agreement in a cost-effective and resource-efficient way, network operators need a systematic mechanism to evaluate the network availability under multiple failure scenario to ensure that current network configuration can meet the required availability degree; otherwise, a network upgrade is required. Unfortunately, under multiple failure scenario, traditional availability analysis techniques based on reliability block diagrams are not suitable for survivable networks with shared spare capacity. Therefore, a new concept is proposed to facilitate the calculations of network availability. In this paper, we propose an analytical model for evaluating the availability of a WDM network with shared-link connections under multiple link failures. The analytical model is also verified using Monte Carlo simulation. The proposed model significantly contributes to the related areas by providing network operators with a quantitative tool to evaluate the system availability and, thus, the expected survivability degree of WDM optical networks with shared connections under multiple link failures.

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References

  1. Mukherjee B.: Optical WDM Networks. Springer, New York (2006)

    Google Scholar 

  2. Xia, M., Tornatore, C, Martel, C., Mukherjee, B.: Risk-aware routing for optical transport networks. In: Proceedings of INFOCOM 2010, pp. 241–255. San Diego (2010)

  3. Zhang J., Zhu K., Zang H., Matloff N.S., Mukherjee B.: Availability-aware provisioning strategies for differentiated protection services in wavelength-convertible WDM mesh networks. IEEE/ACM Trans. Netw. 15(5), 1177–1190 (2007)

    Article  Google Scholar 

  4. Zhou, L., Grover, W.D.: A theory for setting the safety margin on availability guarantees in an SLA. In: Proceedings of DRCN 2005, pp. 403–409. Ischia (2005)

  5. Fawaz W., Chen K., Pujolle G.: Priority-enabled optical shared protection: an online efficiency evaluation study. Comput. Commun. 30(18), 3690–3697 (2007)

    Article  Google Scholar 

  6. Fawaz W., Sawah T., Abou-Rjeily C.: Priority-aware optical shared protection: an offline evaluation study. Comput. Commun. 32(15), 1677–1684 (2009)

    Article  Google Scholar 

  7. Ranjbar A., Assi C.: Availability-aware design in mesh networks with failure-independent path-protecting-cycles. IEEE Trans. Reliab. 58(2), 348–363 (2009)

    Article  Google Scholar 

  8. Arci, D., Petecchi, D., Maier, G., Pattavina, A., Tornatore, M.: Availability models for protection techniques in WDM networks, In: Proceedings DRCN 2003, pp. 158–166 (2003)

  9. Clouqueur M., Grover W.D.: Availability analysis of span-restorable mesh networks. IEEE J. Sel. Areas Commun. 20(4), 810–821 (2002)

    Article  Google Scholar 

  10. Choi, H., Subramaniam, S., Choi, H.A.: On double-link failure recovery in WDM optical networks. In: Proceedings of IEEE INFOCOM 2002, vol. 2, pp. 808–816 (2002)

  11. Tacca, M., Monti, P., Fumagalli, A.: Double-fault shared path protection scheme with constrained connection downtime. In: Proceedings of DRCN 2003, pp. 181–188 (2003)

  12. Mello D.A.A., Schupke D.A.: A matrix-based analytical approach to connection unavailability estimation in shared backup path protection. IEEE Commun. Lett. 9(9), 844–846 (2005)

    Article  Google Scholar 

  13. Tornatore M., Maier G., Pattavina A.: Availability design of optical transport networks. IEEE J. Sel. Areas Commun. 23(8), 1520–1532 (2005)

    Article  Google Scholar 

  14. Xiang, L., Zhe, W., Wosinska, L.: Analysis of connection availability in optical networks with multifailure assumption. In: Proceedings of SPIE Photonic Europe06 (2006)

  15. Wosinska, L.: Connection availability in WDM mesh networks with multiple failures. 2006 International Conference on Transparent Optical Networks, vol. 3, pp. 126–129 (2006)

  16. Clemente, R., Bartoli, M., Bossi, M.C., D’Orazio, G., Cosmo, G.: Risk management in availability SLA. In: Proceedings of DRCN 2005, pp. 411–418. Ischia (2005)

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Authors and Affiliations

  1. College of Computer Science and Engineering, Taibah University, Al-Madinah Al-Munawwara, Kingdom of Saudi Arabia

    Mohamed Mostafa A. Azim & Muhammad Nomani Kabir

  2. Faculty of Industrial Education, Beni-Suef University, Beni-Suef, Egypt

    Mohamed Mostafa A. Azim

Authors
  1. Mohamed Mostafa A. Azim
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  2. Muhammad Nomani Kabir
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Correspondence to Mohamed Mostafa A. Azim.

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Azim, M.M.A., Kabir, M.N. Availability analysis under multiple link failures in WDM networks with shared-link connections. Photon Netw Commun 23, 83–91 (2012). https://doi.org/10.1007/s11107-011-0339-6

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  • DOI: https://doi.org/10.1007/s11107-011-0339-6

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