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MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

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Chapter 12. MPLS and Quality of Service

What You Will Learn

By the end of this chapter, you should know and be able to explain the following:

  • How QoS information is propagated in MPLS networks

  • Which kind of DiffServ tunneling models are available

  • How to implement the different DiffServ tunneling models in Cisco IOS

Quality of service (QoS) has become popular the past few years. Few networks have unlimited bandwidth, so congestion is always a possibility in the network. QoS is a means to prioritize important traffic over less important traffic and make sure it is delivered.

The Internet Engineering Task Force (IETF) has designated two ways to implement QoS in an IP network: Integrated Services (IntServ) and Differentiated Services (DiffServ). IntServ ...

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