Delving into switching concepts

As you have learned so far, network switches are designed and configured to forward frames to their destinations over a network. However, network switches have a lot of additional cool features that allow network professionals to enable special services and functions on a network. In this section, you will learn how network professionals can distribute power over network cables to wireless access points and VoIP phones, prevent a Layer 2 loop on a switching network, aggregate multiple physical links into a single logical link between switches, and discover connected devices on a network.

PoE

Power over Ethernet (PoE) is the technology that allows Direct Current (DC) power over a copper Ethernet cable to devices to reduce the need for a dedicated power supply and Alternating Current (AC) power outlets. For instance, imagine you’re a network professional who has been assigned to install an access point in the center of a ceiling within a large...