9. The VPLS Case Study

  1. Miguel Barreiros1 and
  2. Peter Lundqvist2

Published Online: 20 DEC 2010

DOI: 10.1002/9780470976814.ch9

QOS-Enabled Networks: Tools and Foundations

QOS-Enabled Networks: Tools and Foundations

How to Cite

Barreiros, M. and Lundqvist, P. (2011) The VPLS Case Study, in QOS-Enabled Networks: Tools and Foundations, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470976814.ch9

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



  • case studies - VPLS case study;
  • network technologies, used - how particular services are implemented;
  • high-level perspective - of its design and components;
  • MPLS tunnels, to forward customer traffic;
  • VPN services, providing highest revenue for service providers;
  • customer, having different classes of service - from which to choose;
  • network perspective, traffic arriving from customer - no class of service assigned to it;
  • service implemented using VPLS - as a hub-and-spoke VLAN, and network customer facing interfaces, all Ethernet;
  • classification and trust borders - classification process working on core-facing interfaces;
  • Rewrite rules, ensuring all MPLS traffic - leaving a network router, being either a PE or a P router


This chapter contains sections titled:

  • High-Level Case Study Overview

  • Virtual Private Networks

  • Service Overview

  • Service Technical Implementation

  • Network Internals

  • Classes of Service and Queue Mapping

  • Classification and Trust Borders

  • Admission Control

  • Rewrite Rules

  • Absorbing Traffic Bursts at the Egress

  • Queues and Scheduling at Core-Facing Interfaces

  • Queues and Scheduling at Customer-Facing Interfaces

  • Tracing a Packet Through the Network

  • Adding More Services

  • Multicast Traffic

  • Using Bandwidth Reservations

  • Conclusion

  • Further Reading