Bandwidth-adaptability protection with content connectivity against disaster in elastic optical datacenter networks
Due to disasters in communication networks, the risk of large-scale failure is on the rise. Hence, how to recover failed requests caused by disaster with minimum spectrum resources is an important issue for network operators. In the past years, elastic optical networks provide a new way to reduce the spectrum consumption in optical networks. Based on the technology, bandwidth-adaptability protection with content connectivity (BCP) is proposed in this study. We first introduce the concept of BCP, which includes path calculation and spectrum allocation. For path calculation, working path and backup path employ links in different shared risk link groups to avoid disaster failure in optical networks. For spectrum allocation, modulation format of backup path is adjusted according to the requirement of point-to-content requests to reduce the spectrum consumption. Then, an integer linear program and two heuristic algorithms (BCP_KSP, BCP_MSP) are proposed for static and dynamic traffic scenarios, respectively. Simulation results show that, compared to traditional method without bandwidth adaptability, BCP has better performance in terms of spectrum resource utilization and blocking probability.
KeywordsContent connectivity protection Optical networks survivability Disaster failure Bandwidth adaptability
This work has been supported in part by NSFC project (61201154, 60932004), RFDP Project (20120005120019), Ministry of Education-China Mobile Research Foundation (MCM130132), Fund of State Key Laboratory of Information Photonics and Optical Communications (BUPT), and Chinese Scholarship Council (CSC).
- 1.Cisco White Paper. Cisco visual networking index: forecast and methodology, 2014–2019 (2015)Google Scholar
- 2.Laoutaris, N., Sirvianos, M., Yang, X., Rodriguez, P.: Inter-datacenter bulk transfer with NetSticher. In: Proceeding of SIGCOMM, New York, pp. 74–85 (2011)Google Scholar
- 3.Takara H., Sano A., Kobayashi T., Kubota H., Kawakami H., et al.: 1.01-Pb/s (12 SDM/222 WDM/456 Gb/s) crosstalk-managed transmission with 91.4-b/s/Hz aggregate spectral efficiency. In: Proceeding of ECOC, Postdeadline Paper, Th.3.C.1, Amsterdam (2012)Google Scholar
- 4.Rahnamay-Naeini, M., Pezoa, J., Azar, G., Ghani, N., Hayat, M.: Modeling stochastic correlated network failures and assessing their effects on reliability. In Proceeding of IEEE ICC, Kyoto (2010)Google Scholar
- 6.Adachi, T., Ishiyama, Y., Asakura, Y., Nakamura, K.: The restoration of telecom power damages by the Great East Japan Earthquake. In: Proceeding of INTELEC, Amsterdam (2011)Google Scholar
- 8.Ma C., Zhang J., Zhao Y., Jin Z., Yuan J., Li X., Huang S., Gu W.: Pre-configured cube (p-Cube): optimal protection structure against simultaneous dual-link failure in multi-dimensional node based optical networks. In: Proceedings of ACP, post-deadline paper, AF2C.6, Beijing (2013)Google Scholar
- 16.Jain S., Kumar A., Mandal S., Ong J., Poutievski L., Singh A., Venkata S., Wanderer J., Zhou J., Zhu M., Zolla, J. : B4: experience with a globally-deployed software defined WAN. In: Proceeding of SIGCOMM, pp. 3–14. New York (2013)Google Scholar
- 17.Habib M.F., Tornatore M., Mukherjee B.: Fault-tolerant virtual network mapping to provide content connectivity in optical networks. In Proceeding of OFC, OTh3E.4, Anaheim (2013)Google Scholar
- 18.Yang H., Zhao Y., Zhang J., Wang S., Gu W., Lin Y., Lee Y.: Cross stratum optimization of application and network resource based on global load balancing strategy in dynamic optical networks. In: Proceeding of OFC/NFOEC, JTH2A.38, Los Angeles (2012)Google Scholar
- 23.Sone, Y., Watanabe, A., Imajuku, W., Tsukishima, Y., Kozicki, B., Takara, H., Jinno, M.: Highly survivable restoration scheme employing optical bandwidth squeezing in spectrum-sliced elastic optical path (SLICE) network. In Proceedings of OFC/NFOEC, OThO2. San Diego (2009)Google Scholar
- 24.Wang Y., Cao X., Pan, Y.: A study of the routing and spectrum allocation in spectrum-sliced elastic optical path networks. In Proceedings of IEEE INFOCOM, pp. 1503–1511, Shang Hai (2011)Google Scholar
- 25.Wang, X., Wang, L., Hua, N., Zhang, H., Zheng, X.: Dynamic routing and spectrum assignment in flexible optical path networks. In Proceedings of OFC/NFOEC, JWA55. Los Angeles (2011)Google Scholar