This chapter is extremely important, not just because I said so, but because VLANs are crucial to your network's efficiency. I may sound somewhat repetitive, but you need to remember that switches break up collision domains, which is great, meaning you are in a private collision domain increasing your bandwidth. You can also configure your switch to run at full-duplex, send, and receive at the same time. Switches create MAC address tables, so they reduce the ARP broadcast.
You can create a Virtual Local Area Network (VLAN), which means you can also break up broadcast domains on your switch. When designing your VLAN network, you need to think it through carefully: How exactly am I going to create these virtual LANs? You could create a VLAN by department, by floor, or, in a school environment, by classroom; it is completely up to you.
The idea...
