Performance evaluation of a Linux DiffServ implementation

Authors:
GüNther Stattenberger;Torsten Braun;Matthias Scheidegger;Marcus Brunner;Heinrich J StüTtgen
Affiliations:
Institute of Computer Science and Applied Mathematics, University of Berne, Neubrückstrasse 10, CH-3012 Bern, Switzerland;Institute of Computer Science and Applied Mathematics, University of Berne, Neubrückstrasse 10, CH-3012 Bern, Switzerland;Institute of Computer Science and Applied Mathematics, University of Berne, Neubrückstrasse 10, CH-3012 Bern, Switzerland;NEC Europe Ltd, Adenauerplatz 6, D-69115 Heidelberg, Germany;NEC Europe Ltd, Adenauerplatz 6, D-69115 Heidelberg, Germany
Venue:
Computer Communications
Year:
2002

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Abstract

This paper aims to discuss the possibilities and the limitations of differentiated services (DiffServ) based on end-to-end performance measurement results obtained with a DiffServ implementation on Linux routers. The paper describes methods for end-to-end performance measurements of bandwidth, delay, and jitter for both TCP and UDP flow. The measurement results show that both per-hop-behaviours-expedited (EF) and assured forwarding (AF)-are able to provide a guaranteed bandwidth together with a very small delay and jitter even in a highly congested network as long as sufficient network resources are provisioned. The results further show that not only EF but also AF can be used to provide low delay services.