Abstract
An intra-domain Quality of Service (QoS) routing protocol for the Differentiated Services framework is being developed at the University of Coimbra (UC-QoSR). The main contribution of this paper is the evaluation of the scalability and stability characteristics of the protocol on an experimental test-bed. The control of protocol overhead is achieved through a hybrid approach of metrics quantification and threshold based diffusion of routing messages. The mechanisms to avoid instability are: (i) a class-pinning mechanism to control instability due to frequent path shifts; (ii) the classification of routing messages in the class of highest priority to avoid the loss of accuracy of routing information. The results show that a hop-by-hop, link-state routing protocol, like Open Shortest Path First, can be extended to efficiently support class-based QoS traffic differentiation. The evaluation shows that scalability and stability under high loads and a large number of flows is achieved on the UC-QoSR strategy.
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Curado, M., Reis, O., Brito, J., Quadros, G., Monteiro, E. (2003). Stability and Scalability Issues in Hop-by-Hop Class-Based Routing. In: Marsan, M.A., Corazza, G., Listanti, M., Roveri, A. (eds) Quality of Service in Multiservice IP Networks. QoS-IP 2003. Lecture Notes in Computer Science, vol 2601. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36480-3_8
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DOI: https://doi.org/10.1007/3-540-36480-3_8
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