Dynamic routing of anycast and unicast traffic in elastic optical networks with various modulation formats — Trade-off between blocking probability and network cost

The continuous use of Internet services and applications triggers a sustainable growth of data transfer, therefore generating a necessity to develop an efficient and scalable transport platform. A novel-networking concept - Elastic Optical Networks (EONs) - can support bandwidth-demanding traffic from an advent of new services including cloud computing and content delivery networks. In this paper, we focus on dynamic routing of anycast and unicast traffic; anycast refers to cloud computing or content traffic served by data centers. We assume that EONs support various distance-adaptive modulation formats, namely BPSK, QPSK, and m-QAM, where m belongs to {8, 16, 32 and 64}. A higher modulation format consumes less spectrum, which can lead to a smaller blocking probability (BP) in dynamic routing. However, at the same time, a higher modulation format provides a smaller transmission distance, which triggers the need to use regenerators and increases CAPEX/OPEX network costs as well as power consumption. Therefore, the main goal of our research is to find a trade-off between the BP and using extra regenerators in the context of dynamic routing of anycast and unicast traffic in EONs.

[1]  A. Klekamp,et al.  Efficiency of adaptive and mixed-line-rate IP over DWDM networks regarding CAPEX and power consumption [Invited] , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[2]  Krzysztof Walkowiak,et al.  Joint anycast and unicast routing for elastic optical networks: Modeling and optimization , 2013, 2013 IEEE International Conference on Communications (ICC).

[3]  Ioannis Tomkos,et al.  Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks (vol 29, pg 1354, 2011) , 2011 .

[4]  Krzysztof Walkowiak,et al.  Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Path Network , 2011, IEEE Communications Letters.

[5]  Wei Lu,et al.  Dynamic Service Provisioning in Elastic Optical Networks With Hybrid Single-/Multi-Path Routing , 2013, Journal of Lightwave Technology.

[6]  Luis Miguel Contreras Murillo,et al.  Toward cloud-ready transport networks , 2012, IEEE Communications Magazine.

[7]  P. Castoldi,et al.  Demonstration of Flexible Optical Network Based on Path Computation Element , 2012, Journal of Lightwave Technology.

[8]  Bengt Ahlgren,et al.  A survey of information-centric networking , 2012, IEEE Communications Magazine.

[9]  Masahiko Jinno,et al.  Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies , 2009, IEEE Communications Magazine.

[10]  J. P. Fernandez-Palacios,et al.  Dynamic operation of flexi-grid OFDM-based networks , 2012, OFC/NFOEC.

[11]  Zhi-Li Zhang,et al.  A first look at inter-data center traffic characteristics via Yahoo! datasets , 2011, 2011 Proceedings IEEE INFOCOM.

[12]  Krzysztof Walkowiak QoS Dynamic Routing in Content Delivery Networks , 2005, NETWORKING.

[13]  H. Takara,et al.  Experimental demonstration of spectrum-sliced elastic optical path network (SLICE). , 2010, Optics express.

[14]  Lei Liu,et al.  GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [Invited] , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[15]  A. Klekamp,et al.  Efficiency of adaptive and mixed-line-rate IP over DWDM networks regarding CAPEX and power consumption , 2012, OFC/NFOEC.

[16]  Didier Colle,et al.  Optical Networks for Grid and Cloud Computing Applications , 2012, Proceedings of the IEEE.

[17]  F. Buchali,et al.  Quantifying spectrum, cost, and energy efficiency in fixed-grid and flex-grid networks [Invited] , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[18]  Yanghee Choi,et al.  A Survey on content-oriented networking for efficient content delivery , 2011, IEEE Communications Magazine.

[19]  Krzysztof Walkowiak,et al.  On the advantages of elastic optical networks for provisioning of cloud computing traffic , 2013, IEEE Network.

[20]  Víctor López,et al.  Elastic Spectrum Allocation for Time-Varying Traffic in FlexGrid Optical Networks , 2013, IEEE Journal on Selected Areas in Communications.

[21]  Krzysztof Walkowiak,et al.  Anycasting in connection-oriented computer networks: Models, algorithms and results , 2010, Int. J. Appl. Math. Comput. Sci..