When you design a switched network, you must consider many things. Adding to or redesigning a large enterprise or campus network can seem complex or overwhelming. There is an accepted, organized approach to switched network design that can simplify the design process, as well as make the network more efficient and scalable.
This section is organized as a quick reference “checklist” of guidelines, rules of thumb, and ideas to help you think through the overall network architecture and configuration. Many of the checklist items include a reference to the appropriate sections of this book that deal with the switch features.
Segment LANs into the smallest collision domains possible by using LAN switches.