The Multilayer Network Design

When you design a data center using a modular approach, the network is divided into three functional layers: Core, Aggregation, and Access. These layers can be physical or logical. This section describes the function of each layer in the data center. Figure 1-1 shows functional layers of a multilayer network design.

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Figure 1-1 Functional Layers in the Hierarchical Model

The hierarchical network model provides a modular framework that enables flexibility in network design and facilitates ease of implementation and troubleshooting. The hierarchical model divides networks or their modular blocks into three layers. ...

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