R. van de Meent
- Evaluation of 'user-oriented' and 'black-box' traffic models for link provisioning
- Book/source title
- Proceedings 1st EuroNGI Conference on Next Generation Internet Networks - Traffic Engineering, Rome, Italy.
- Amsterdam: Centrum voor Wiskunde en Informatica
- Document type
- Conference contribution
- Faculty of Science (FNWI)
- Korteweg-de Vries Institute for Mathematics (KdVI)
To offer users a sufficient performance level, network links should be properly provisioned. The required bandwidth capacity may be determined through the use of a model of the real network traffic. In this paper, we study the use of two classes of traffic models: (i) 'user-oriented models', which capture the behavior of individual flows, and (ii) 'black-box models', which statistically describe the superposition of many users (and do not distinguish between individual flows). User-oriented models have the advantage that they allow for sensitivity analysis: the impact of a change in the user parameters (access rate, flow-size distribution) can be assessed. In general, however, our measurements indicated that black-box models are easier to estimate, and yield accurate provisioning guidelines.
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