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Cisco Networking Simplified, Second Edition by Paul Della Maggiora, Neil Anderson, Jim Doherty

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Chapter . High Availability

Designing networks for high availability

  • Prevents financial loss

  • Prevents productivity loss

  • Reduces reactive support costs

  • Improves customer satisfaction and loyalty

Network availability (often called “high availability”) is the design and measurement of a network in terms of accessibility of network services. The network must be available for people to access the services on it. High availability simply refers to the desire to have the network available all the time, or as close to all the time as possible. Network uptime is the term used to describe the availability of the network.

As networks have migrated from mainframe-based client/server models to hybrid distributed networks (both client/server and peer-to-peer), measuring ...

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