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Learn Cisco Network Administration in a Month of Lunches by Ben Piper

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Chapter 4. Managing switch ports

A network can consist of many different kinds of devices: PCs, IP phones, printers, servers, wireless access points, and even other switches. The one thing these devices all have in common is that they physically connect to a switch, specifically, the Ethernet port of a switch.

Although Cisco sometimes refers to ports as interfaces, I’m going to call them ports because that’s how most people know them. Although plugging a device into a switch port is a trivial task, the magic behind how data gets transferred between a device and a switch is anything but trivial.

See if any part of this story sounds familiar: I used to work for a company that had offices scattered around the country. Each office had a few switches, ...

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