Chapter 5. Backbone Infrastructure

In this chapter, you learn the following topics:

• Backbone Performance

• Latency Versus Link Utilization

• Reference Network

• QoS Design Alternatives

This chapter discusses the implementation of quality of service (QoS) in a Multiprotocol Label Switching Protocol (MPLS) backbone. You will find several design options with different levels of granularity and complexity. Most designs use Differentiated Services (DiffServ) as a base technology and equally apply to pure IP backbones. Some designs incorporate MPLS Traffic Engineering (MPLS TE) to improve the performance characteristics of the network and are specific to MPLS backbones. Many factors influence the selection of the most appropriate design for a particular ...

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