1. The QOS World

  1. Miguel Barreiros1 and
  2. Peter Lundqvist2

Published Online: 20 DEC 2010

DOI: 10.1002/9780470976814.ch1

QOS-Enabled Networks: Tools and Foundations

QOS-Enabled Networks: Tools and Foundations

How to Cite

Barreiros, M. and Lundqvist, P. (2011) The QOS World, in QOS-Enabled Networks: Tools and Foundations, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470976814.ch1

Author Information

  1. 1

    Juniper Networks, Portugal

  2. 2

    Juniper Networks, Sweden

Publication History

  1. Published Online: 20 DEC 2010
  2. Published Print: 7 JAN 2011

ISBN Information

Print ISBN: 9780470686973

Online ISBN: 9780470976814



  • QoS realm, and Quality of Service (QoS) - always in a world of its own;
  • QOS usage, increasing to a point - a necessary part of network design and operation;
  • large-scale deployments, technology becoming mature - QOS, being no exception;
  • voice traffic, supported on circuit-switched networks - delivered on “same common” packet-switched infrastructure;
  • inherent drawback, in a common network - the road, being now the same for different traffic types;
  • different types of traffic - and different requirements;
  • key point with QOS, non-equal split of resources - implying no “win–win” situations;
  • QoS role, application of different network behaviors - to different traffic types;
  • QOS concept, hard to grasp - structurally different from other concepts in networking world;
  • standards and Per-Hop Behavior - standards in IP realm, relevant to QOS, Integrated Services (IntServ) and Differentiated Services (DiffServ)


This chapter contains sections titled:

  • Operation and Signaling

  • Standards and Per-Hop Behavior

  • Traffic Characterization

  • A Router Without QOS

  • Conclusion

  • References

  • Further Reading