What is the purpose of the Cisco Enterprise Architecture and the hierarchical desgin?
- It replaces the three-layer hierarchical model with a ﬂat network approach.
- Each element in the hierarchy has a speciﬁc set of functions and services that it oﬀers and speciﬁc role.*
- It provides services and functionality to the core layer by grouping various components into a single component that is located in the access layer.
- It reduces overall network traﬃc by grouping server farms, the management server, corporate intranet, and e-commerce routers in the same layer.
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