High Availability Network Fundamentals

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Cisco Press, 2001 - Computers - 237 pages
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A practical guide to modeling and designing reliable networks

  • Provides a detailed introduction to modeling availability necessary for network design
  • Helps network designers understand the theoretical availability of their topologies
  • Explains the factors that limit availability to minimize the number of network failures
  • Provides all the information necessary to do basic availability modeling/budgeting

High Availability Network Fundamentalsdiscusses the need for and the mathematics of availability, then moves on to cover the issues affecting availability, including hardware, software, design strategies, human error, and environmental considerations. After setting up the range of common problems, it then delves into the details of how to design networks for fault tolerance and provides sample calculations for specific systems. Also included is a complete, end-to-end example showing availability calculations for a sample network.

  

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Contents

Introduction to Availability
3
The Basic Mathematics of High Availability
19
Network Topology Fundamentals
33
Predicting Availability
41
Predicting Software Availability
57
Predicting Availability Considering the Environment
70
Including Human Error and Process in Availability Calculations
79
Summary
98
An Availability Analysis
131
An Availability Analysis
163
An Availability Analysis
173
Network Level Availability Calculations
201
Major Network Service Construct Availability
213
Summary
221
Appendix A The Contents of the CD
223
Index
229

Examples of Analyzing RealWord Availability
117

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About the author (2001)

Chris Oggerino is a Serviceability Design Engineer with Cisco Systems. Chris has spent the last 4+ years working on the reliability, availability, serviceability and usability of products atthe world's leading company for internetworking devices. Prior to his current position, Chris was a Support Engineer at 3Com where he focused on the design, implementation, and maintenance of the network for Wells Fargo and Columbia Healthcare Network. Chris has a BA in Mathematics from San Jose State University.

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