Future Work

The following issues are worth-while for further investigation:

1. Service Level Agreement Problem:

The delay tolerance varies from different applications such as data integrity or real time streaming traffic. Besides, the rent of enterprise may separate the networks into many sub-networks. We will consider the QoS or Service Level Agreement (SLA) to serve users by adapting resource allocation or find a better trade between system efficiency and power consumption. Thus, the customers of cloud computing can choose suitable scheme in flexibility.

2. Out-of-Order Problem:

We observe the out-of-order problem [26] in equal hops networks topology. Hence, in our routing design, we also consider this problem. We will evaluate the throughput of out-of-order problem based on our simulation platform to illustrate this issue. However, the architecture in NS2 not easy to simulate Automatic Repeat-reQuest (ARQ), which makes the simulation of the out-of-order problem in NS2 platform become challenging.

3. Mathematical Model:

In our DC networking framework, we are still lack of mathematical analysis. Hence, we want to derive a mathematical model to promote the reliability. Besides, we can prove the property of disjoint algorithm and acquire the optimal factors from math model.

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Bibliography

[1] A. Greenberg, J. R. Hamilton, N. Jain, S. Kandula, C. Kim, P. Lahiri, D. A. Maltz, P. Patel, and S. Sengupta, “VL2: a scalable and flexible data center network,” in ACM SIGCOMM on Data communication. New York, NY, USA: ACM, pp. 51–62, Aug 2009.

[2] R. Niranjan Mysore, A. Pamboris, N. Farrington, N. Huang, P. Miri, S. Radhakrish-nan, V. Subramanya, and A. Vahdat, “PortLand: a scalable fault-tolerant layer 2 data center network fabric,” in ACM SIGCOMM on Data communication. New York, NY, USA: ACM, pp. 39–50, Aug 2009.

[3] C. Guo, G. Lu, D. Li, H. Wu, X. Zhang, Y. Shi, C. Tian, Y. Zhang, and S. Lu, “BCube:

a high performance, server-centric network architecture for modular data centers,” in ACM SIGCOMM on Data communication. New York, NY, USA: ACM, pp. 63–74, Aug 2009.

[4] C. Suh, K. Kim, and J. Shin, “ENDIST: Edge node divided spanning tree,” in 10th International Conference on Advanced Communication Technology, vol. 1, pp. 802 –807, Feb 2008.

[5] M. Schlansker, J. Tourrilhes, Y. Turner, and J. Santos, “Killer fabrics for scalable datacenters,” in IEEE International Conference on Communications, pp. 1 –6, May 2010.

[6] T. Benson, A. Anand, A. Akella, and M. Zhang, “MicroTE: fine grained traffic en-gineering for data centers,” in Conference on emerging Networking Experiments and Technologies. New York, NY, USA: ACM, pp. 8:1–8:12, Dec 2011.

[7] M. Al-Fares, A. Loukissas, and A. Vahdat, “A scalable, commodity data center net-work architecture,” in ACM SIGCOMM 2008 conference on Data communication.

New York, NY, USA: ACM, pp. 63–74, Aug 2008.

[8] A. Greenberg, P. Lahiri, D. A. Maltz, P. Patel, and S. Sengupta, “Towards a next gen-eration data center architecture: scalability and commoditization,” in ACM workshop on Programmable routers for extensible services of tomorrow. New York, NY, USA:

ACM, pp. 57–62, Aug 2008.

[9] C. Hendrick, “Routing information protocol,” IETF, RFC 1058, June 1988.

[10] J. Moy, “OSPF version 2,” IETF, RFC 1583, March 1994.

[11] D. Thaler and C. Hopps, “Multipath issues in unicast and multicast next-hop selec-tion,” RFC 2991, Nov. 2000.

[12] C. Suh, Z. Luo, D.-Y. Kim, and B.-S. Joo, “An analytic model for spanning tree based routing methods,” in 11th International Conference on Advanced Communica-tion Technology, vol. 01, pp. 605 –610, Feb 2009.

[13] C. Suh and S. woong Jung, “Layer-2 routing analytic model by linear programming,”

in 10th International Conference on Advanced Communication Technology, vol. 1, pp. 561 –566, Feb 2008.

[14] IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges, IEEE Std. 802.1D, 2004.

[15] H. T. Viet, Y. Deville, O. Bonaventure, and P. Francois, “Traffic engineering for multi-ple spanning tree protocol in large data centers,” in International Teletraffic Congress, pp. 23 –30, Sep 2011.

[16] Virtual Bridged Local Area Networks, Amendment 9: Shortest Path Bridging, IEEE Std. 802.1aq/D0.3, 2006.

[17] D. Allan, P. Ashwood-Smith, N. Bragg, J. Farkas, D. Fedyk, M. Ouellete, M. Sea-man, and P. Unbehagen, “Shortest path bridging: Efficient control of larger ethernet networks,” IEEE Communications Magazine, vol. 48, pp. 128–135, 2010.

[18] M. Schlansker, Y. Turner, J. Tourrilhes, and A. Karp, “Ensemble routing for dat-acenter networks,” in ACM/IEEE Symposium on Architectures for Networking and Communications Systems. New York, NY, USA: ACM, pp. 23:1–23:12, Oct 2010.

[19] L. A. Grieco and S. Mascolo, “Performance evaluation and comparison of west-wood+, new reno, and vegas tcp congestion control,” SIGCOMM Comput. Commun.

Rev., vol. 34, no. 2, pp. 25–38, Apr. 2004.

[20] T. Benson, A. Anand, A. Akella, and M. Zhang, “Understanding data center traffic characteristics,” SIGCOMM Comput. Commun. Rev., vol. 40, no. 1, pp. 92–99, Jan.

2010.

[21] C. Guo, H. Wu, K. Tan, L. Shi, Y. Zhang, and S. Lu, “Dcell: a scalable and fault-tolerant network structure for data centers,” SIGCOMM Comput. Commun. Rev., vol. 38, no. 4, pp. 75–86, Aug. 2008.

[22] S. Kandula, J. Padhye, and P. Bahl, “Flyways to de-congest data center networks,” in Association for Computing Machinery, Inc, Oct. 2009.

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[23] P. Gill, N. Jain, and N. Nagappan, “Understanding network failures in data centers:

measurement, analysis, and implications,” in ACM SIGCOMM 2011. New York, NY, USA: ACM, pp. 350–361, Aug 2011.

[24] Network simulator ns-2 http://www.isi.edu/nsnam/ns.

[25] S. Kandula, S. Sengupta, A. Greenberg, P. Patel, and R. Chaiken, “The nature of data center traffic: measurements & analysis,” in ACM SIGCOMM on Internet Measure-ment. New York, NY, USA: ACM, pp. 202–208, Nov 2009.

[26] J. Kim and B. Ahn, “Next-hop selection algorithm over ecmp,” in Asia-Pacific Con-ference on APCC 2006, pp. 1 –5 Aug 2006.

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Vita

Gen-Hen Liuwas born in Taiwan, R. O. C. in 1988. He received a B.S. in Electrical and Computer Engineering from National Chiao-Tung University in 2010. From July 2010 to September 2012, he worked his Master degree in the Mobile Communications and Cloud Computing Lab in the Department of Communication Engineering at National Chiao-Tung University. His research interests are in the field of Cloud Computing.

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