Hierarchical Design Model
The Cisco Hierarchical Design Model is another network model that is used to design and engineer data communication networks. The Hierarchical Design Model is a three-tiered, or layered, model with a core, distribution, and access layer, as illustrated in Figure 2-3.
Figure 2-3. Three-Tiered Design Model
The Hierarchical Design Model is used by network designers, architects, and engineers when designing and implementing scalable and efficient networks. As stated previously, the three tiers of this model (illustrated in Figure 2-4) are the core, distribution, and access layers. The core layer provides high-speed switching ...
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