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Institute of Communication Networks and Computer Engineering (IKR)

IKR Publication No 28283

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Publication No 28283

Author(s)

Bodamer, S.*; Renger, T.*; Rößler, G.

Title

Traffic Management in an ATM Multi-Service Switch for Workgroups

Topics

Broadband Networks; Quality of Service

Methods

Traffic Engineering; Performance Evaluation; Systems Engineering

Keywords

EFFECTIVE BANDWIDTH; TRAFFIC CONTROL; SWITCHING SYSTEM; PERFORMANCE EVALUATION; CONNECTION ADMISSION CONTROL; ATM

Abstract

ATM switches have to provide traffic management functions to meet the QoS requirements of different service categories. Among the traffic management functions we will focus on connection admission control (CAC) and priority control in this paper. Besides the mechanisms and algorithms behind these functions the issue of application to a concrete architecture of an ATM multi-service workgroup switch is emphasized. For CAC a new method is proposed that is based on a simple approximation of the effective bandwidth. The difficulties occurring if connections with different parameters are mixed together are solved by handling CBR traffic separately and dividing the parameter space for VBR connections into several regions. Within the VBR regions the linear method is applied while for connections associated to different regions a reduced service rate is considered. The performance of both the priority control mechanisms and the CAC method is evaluated using analysis and simulation.

Year

1998

Reference entry

Bodamer, S.; Renger, T.; Rößler, G.
Traffic Management in an ATM Multi-Service Switch for Workgroups
Proceedings of the 4th IFIP International Conference on Broadband Communications (BC '98), Stuttgart, April 1998, pp. 341-355

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Authors marked with an asterisk (*) were IKR staff members at the time the publication has been written.