A scalable architecture for end-to-end QoS provisioning

Spiridon Bakiras, Victor O K Li

Research output: Contribution to journalArticle

14 Citations (Scopus)


The Differentiated Services (DiffServ) architecture has been proposed by the Internet Engineering Task Force as a scalable solution for providing end-to-end Quality of Service (QoS) guarantees over the Internet. While the scalability of the data plane emerges from the definition of only a small number of different service classes, the issue of a scalable control plane is still an open research problem. The initial proposal was to use a centralized agent, called Bandwidth Broker, to manage the resources within each DiffServ domain and make local admission control decisions. In this article, we propose an alternative decentralized approach, which increases significantly the scalability of both the data and control planes. We discuss in detail all the different aspects of the architecture, and indicate how to provide end-to-end QoS support for both unicast and multicast flows. Furthermore, we introduce a simple traffic engineering mechanism, which enables the more efficient utilization of the network resources.

Original languageEnglish
Pages (from-to)1330-1340
Number of pages11
JournalComputer Communications
Issue number13
Publication statusPublished - 15 Aug 2004
Externally publishedYes



  • Admission control
  • Differentiated services
  • Quality of service
  • Resource management
  • Traffic engineering

ASJC Scopus subject areas

  • Computer Networks and Communications

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