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The Art of Network Architecture: Business-Driven Design by Denise Donohue, Russ White

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Chapter 7. Applying Modularity

Knowing and applying the principles of modular design are two different sorts of problems. But there are entire books just on practical modular design in large scale networks. What more can one single chapter add to the ink already spilled on this topic? The answer: a focus on why we use specific design patterns to implement modularity, rather than how to use modular design. Why should we use hierarchical design, specifically, to create a modular network design? Why should we use overlay networks to create virtualization, and what are the results of virtualization as a mechanism to provide modularity?

We’ll begin with hierarchical design, considering what it is (and what it is not), and why hierarchical design works ...

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