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Navigating Network Complexity: Next-generation Routing with SDN, Service Virtualization, and Service Chaining by Jeff Tantsura, Russ White

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Chapter 11. Service Virtualization and Service Chaining

In the early days of network engineering, two words could be used to describe the applications running over the network: simple and few. There were several different ways to transfer files, a few ways to talk to someone else (such as email and message boards), and perhaps a few other applications of note. In these ideal times, the end-to-end principle reigned supreme, with hosts only talking to other hosts (or bigger hosts called servers) and the occasional mainframe or mini (remember those?).

This has changed over the years; each new generation of users and businesses have added new ideas about what networks need to support and laid requirements on the network itself.

First, there were ...

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