An implementation of a service class providing assured TCP rates within the AQUILA framework

  • Authors:
  • Christof Brandauer;Peter Dorfinger

  • Affiliations:
  • Salzburg Research, Salzburg, Austria;Salzburg Research, Salzburg, Austria

  • Venue:
  • Art-QoS'03 Proceedings of the 2003 international conference on Architectures for quality of service in the internet
  • Year:
  • 2003

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Abstract

This paper investigates an attempt to establish a QoS class that supports long-lived, bulk-data TCP flows that require a minimum rate from the network. The approach is based on a model for TCP flows subject to token bucket marking at the network edge and preferential dropping in the core network. The service class adds admission control functionality and a model for multi-RED queue management to the token bucket marker. The difficulty of parameterizing the mechanisms is discussed and analyzed in an explorative simulation study. A set of configuration parameters that enables a successful operation of the service class is identified and the achievable service provisioning is shown.