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This paper presents an end-to-end performance management architecture for telephony applications in heterogenous and convergent networks. An abstract model for QoS management of a communication system is used to derive basic building blocks and functions. Based on the TMN structure of the ITU-T, a

The provisioning of end-to-end services in presence of traffic aggregation is evaluated in the framework of the Differentiated Services QoS architecture. The effect of stream multiplexing on delay and jitter-sensitive traffic is analyzed through an experimental approach. Aggregation is evaluated

this paper.

of the paper experimental measurements of performance indices, such as end-to-end response time, TCP connection time, transfer time, of several web applications are presented. The presence of self-similarity characteristics in the traffic measurements is shown. 1

Channel scheduling algorithms that are used in network routers play a vital role in providing end-to-end quality of service(QoS) guarantees. In a heterogeneous network environment, a mixture of scheduling schemes is often found at the various routers. Although weighted fair queueing(WFQ), when

The Network Calculus notation and basic results are presented in Section 2, as well as our model of network and of routing scheme. Then we investigate in Section 3 the first main issue: we provide a necessary and sufficient condition in order to guarantees that one can route the flow across the network with fixed proportions while preserving its stability (i.e. ensuring that the amount of data in the nethal-00289106,

This paper performs controlled experiments to analyze the performance of home networks. We show that the home network has a significant impact on end-to-end performance. For example, watching TV can double the time to download a file; and deploying a wireless network significantly increases round

rate, to the (perceived) end-to-end performance of user applications, e.g., the latency of retrieving a Web page. In this paper, we study the impact of the network QoS on the perceived end-to-end performance of user applica-tions. We first propose a generic testbed using a combination of simulation

environment. The effects of RED in a heterogeneous environment are not thoroughly understood. In this paper, we use extensive simulations to explore the interaction between RED and various types of heterogeneity, as well as the impact of such interaction on the user-perceived end-to-end performance. Our