Chapter 12. MPLS and Traffic Engineering


As the Internet has grown, more and more platforms are accessing it and in doing so generating an ever-increasing amount of traffic. Some of these platforms are server farms that may store user data or provide streaming e-learning content. Then there are the more complex networks in the enterprise infrastructure that may span multiple geographic regions , even the world. Add to this the Internet backbone, which is comprised of several heterogeneous data networks, each providing different levels of connectivity. The end result is more than just the Web pages and e-mail, which are so familiar. The growth and expansion of the Internet has happened very quickly and has lead to a number of problems, one of the largest being control.

Traffic engineering is the process of controlling the flow of traffic across a physical network topology to obtain optimal resource use. When implemented properly, traffic engineering helps a carrier to use all available bandwidth resources efficiently . JUNOS uses MPLS in combination with RSVP as its primary method of traffic engineering.

This chapter begins with an introduction to traffic-engineering problems and solutions, MPLS, and RSVP, then describes how they are implemented in JUNOS and shows how to build a minimal MPLS/RSVP configuration. The case studies included at the end of this chapter help the reader explore the concept of traffic engineering as it is applied in different network scenarios.



Juniper Networks Reference Guide. JUNOS Routing, Configuration, and Architecture
Juniper Networks Reference Guide: JUNOS Routing, Configuration, and Architecture: JUNOS Routing, Configuration, and Architecture
ISBN: 0201775921
EAN: 2147483647
Year: 2002
Pages: 176

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