A switch is an internal device that connects all of the users in the LAN so that they can communicate with each other. As we have seen in previous chapters, a computer connects to a wall jack into a patch panel, and then from the patch panel to the switch. Let's look at the functionality and protocols used by a switch:
- 801. Ix: A managed switch is called 802.1x, where the switch identifies and authenticates devices connecting to the switch and blocks rogue devices, such as a rogue access point, without the need to switch the port off. It controls the flow of traffic from wireless to wired communication and can work in conjunction with a Remote Authentication Dial-In User Service (RADIUS) server for authentication.