Load Modeling and Generation for IP-Based Networks: A Unified Approach and Tool Support

This paper presents a unified approach to load generation in IP-based networks supported by a Unified Load Generator UniLoG which incorporates a formal automata-based load specification technique. The load specification technique is applied to two exemplarily chosen models for VoIP and MPEG-coded video traffic sources in order to use them for load generation in UniLoG. The performance characteristics of UniLoG modules, which are responsible for the injection of real traffic loads at different interfaces in IP networks, are discussed and the practical use of UniLoG is demonstrated in the context of a comprehensive QoS study of video streaming via an IEEE 802.11g WLAN under various background loads.

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