On the use of accounting data for QoS-aware IP network planning

Authors:
Alan Davy;Dmitri Botvich;Brendan Jennings
Affiliations:
Telecommunications Software & Systems Group, Waterford Institute of Technology, Waterford, Ireland;Telecommunications Software & Systems Group, Waterford Institute of Technology, Waterford, Ireland;Telecommunications Software & Systems Group, Waterford Institute of Technology, Waterford, Ireland
Venue:
ITC20'07 Proceedings of the 20th international teletraffic conference on Managing traffic performance in converged networks
Year:
2007

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Abstract

We present an economically efficient framework for provision of essential input for QoS-aware IP network planning. Firstly, we define a process for reuse of network accounting data for construction of a QoS-aware network demand matrix. Secondly, we define a process for estimation of QoS-related effective bandwidth coefficients from packet traces collected per traffic classe. Taken together, these processes provide the necessary input required to plan a network in accordance with QoS constraints. We present results of a sensitivity analysis of the demand estimation process, and of an economic analysis of the relative merit of deployment of our approach in comparison to a traditional direct measurement-based approach. We conclude that although there is a degree of inaccuracy in our network demand estimation process this inaccuracy is within acceptable bounds, and that this is offset by the potential for significant cost reductions for the ISP.