This chapter introduces the concept of traffic engineering (TE) as applied to IP
traffic in the Internet. Traffic engineering has long been a familiar concept to
town planners and road safety engineers--they are concerned with how to get
the best flows of vehicles through congested streets with the minimum number
of accidents. A road planner is concerned about the effects of road junctions,
merging traffic flows, and sudden turns. When they build a new road will a single
lane street be sufficient or do they need an eight-lane highway? What are the
optimum ...
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