A Scalable Architecture Supporting QoS Guarantees Using Traffic Engineering and Policy Based Routing in the Internet
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Abstract
The study of Quality of Service (QoS) has become of great importance since the Internet is used to support a wide variety of new services and applications with its legacy structure. Current Internet architecture is based on the Best Effort (BE) model, which attempts to deliver all traffic as soon as possible within the limits of its abilities, but without any guarantee about throughput, delay, packet loss, etc. We develop a three-layer policy based architecture which can be deployed to control network resources intelligently and support QoS sensi-tive applications such as real-time voice and video streams along with standard applications in the Internet. In order to achieve selected QoS parameter values (e.g. loss, delay and PDV) within the bounds set through SLAs for high priority voice traffic in the Internet, we used traffic engineering techniques and policy based routing supported by Border Gateway Protocol (BGP). Use of prototype and simulations validates function-ality of our architecture.
- P. Nanda and A. J. Simmonds, “Policy based QoS sup-port using BGP routing,” International Conference on Communications in Computing, CIC’06, Las Vegas, Ne-vada, USA, CSREA Press, ISBN 1–60132–012 –4, pp. 63–69, June 26–29, 2006.
- B. Teitelbaum, “QBone bandwidth brokerarchitecture,” [Online]Available:http://qbone.internet2.edu/bb/bboutline2.html.
- K. Nichols, V. Jacobson, and L. Zhang: “A two-bit dif-ferentiated services architecture for the internet,” IETF RFC 2638, July 1999.
- ITU–T Recommendation G.114, One way transmission time, 1996.
- A. D. Yahaya and T. Suda, “iREX: Inter–domain QoS automation using economics,” IEEE Consumer Commu-nications and Networking Conference, CCNC’06, USA, January 2006.
- N. Feamster, J. Winick, and J. Rexford, “A model of BGP routing for network engineering,” SIGMETRICS/ Performance’04, New York, USA, June 12–16, 2004.
- D. O. Awduche, A. Chiu, A. Elqalid, I Widjaja, and X. Xiao, “A framework for internet traffic engineering,” Draft 2, IETF, 2002.
- B. Quoitin, S. Uhlig, C. Pelsser, L. Swinnen, and O. Bonaventure, “Internet traffic engineering with BGP,” Quality of Future Internet Services, Springer, 2003.
- G. Di Battista, M. Patrignani, and M. Pizzonia, “Com-puting the types of relationships between autonomous systems,” IEEE INFOCOM, 2003.
- Y. Rekhter and T. Li, “A border gateway protocol 4 (BGP-4),” Internet draft, draft-ietf-idr-bgp4-17.txt, work in progress, January 2002.
- B. Quoitin, C. Pelsser, O. Bonaventure, and S. Uhlig, “A performance evaluation of BGP-based traffic engineer-ing,” Int’l. J. Network Mgmt, 2005.
- R. Yavatkar, D. Pendarakis, and R. Guerin, “A frame-work for policy-based admission control,” RFC 2753, January 2000.
- S. Salsano, “COPS usage for Diffserv resource allocation (COPS-DRA),” Internet Draft, October 2001.
- P. Nanda and A. Simmonds, “Providing end-to-end guar-anteed quality of service over the Internet: A survey on bandwidth broker architecture for differentiated services network,” CIT’01, 4th International Conference on IT, Berhampur, India, pp.211–216, 20–23 December 2001.
- K. Nichols, S. Blake, F. Baker, and D. Black, “Definition of the differentiated services field (DS Field) in the IPv4 and IPv6 headers,” IETF RFC 2474, Dec. 1998.