This chapter covered many introductory concepts of Cisco's switches and how you use them in your network. AVVID is one of the core building blocks that Cisco uses when creating a network design. AVVID includes three components: Network Infrastructure, Intelligent Network Services, and Network Solutions.

Cisco uses a basic three-layer hierarchical model to describe the design process: core, distribution, and access. The core layer provides high-speed switching between distribution layers. The distribution layer provides Layer 3 services and separation of access and other distribution layers. The access layer provides a user's initial connection to the network.

Cisco expands on this model when designing campus networks. A campus network ...

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