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Performance and Fault Management by James M. Thompson, Kent J. Phelps, Robert L. Pavone, Christopher E. Elliott, Paul L. Della Maggiora

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The Need to Understand Network Statistics

In this section, the need to understand statistics will be shown through the following:

  • Availability data

  • Random nature of the variables collected for baselines and trending

  • The need to aggregate data

  • The use of simulation modeling for networking new solution deployment and design

Availability Statistics

One reason that network managers need an understanding of basic statistics is so they can apply availability data effectively in monitoring the network and service-level agreements. To amplify on the availability discussion in Chapter 4, availability can be defined as the probability that a product or service will operate when needed. In data network environments, this can be defined as the average fraction ...

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