Another way in which a hierarchical design makes designing for resilience easier is by breaking the resilience problem into two pieces—the resilience within a module and the resilience between modules. These become two separate problems that are kept apart through clear lines of functional separation.
This leads to another general rule for hierarchical network design—build solid redundancy at the module interconnection points.
- Chapter 7. Applying Modularity
- from The Art of Network Architecture: Business-Driven Design
- Publisher: Cisco Press
- Released: April 2014
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