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Cisco Networking Essentials by Troy McMillan

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Describing Device Functions

Infrastructure devices are those devices that connect sections of the network together, like road systems that connect cities and towns. Some of the devices create connections that operate like limited-access interstate highways connecting cities, while others create connections that are more like secondary highways that connect smaller towns and provide access to the interstate highway at specified entrance ramps. Finally, using the same analogy, some of the devices create connections that might be considered local roads, connecting neighborhoods to the secondary roads.

If you've ever driven in an area where the road system developed over time without a master plan and experienced the headaches that result from this, ...

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