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Networking Fundamentals · Intermediate

Core Layer

The backbone layer of a hierarchical network that provides fast, redundant transport between distribution blocks.

Definition

The core avoids processing-heavy features like packet filtering so it can forward at maximum speed. It is built with high redundancy and high-capacity links.

Example

Two high-end chassis switches form a redundant campus core.

Exam tip

Do not apply ACLs and complex policy at the core.

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