Introduction

Introduction

Driven by a myriad of factors, LAN switching technology has literally taken the world by storm. The Internet, Web technology, new applications, and the convergence of voice, video, and data have all placed unprecedented levels of traffic on campus networks. In response, network engineers have had to look past traditional network solutions and rapidly embrace switching. Cisco, the router company, has jumped heavily into the LAN switching arena and quickly established a leadership position. The Catalyst series of switches has set a new standard for performance and features, not to mention sales.

Despite the popularity of campus switching equipment, it has been very difficult to obtain detailed and clear information on how it should be designed, utilized, and deployed. Although many books have been published in the last several years on routing technology, virtually no books have been published on LAN switching. The few that have been published are vague, out-of-date, and absent of real-world advice. Important topics such as the Spanning-Tree Protocol and Layer 3 switching have either been ignored or received inadequate coverage. Furthermore, most have contained virtually no useful information on the subject of campus design.

This book was written to change that. It has the most in-depth coverage of LAN switching technology in print to date. Not only does it have expansive coverage of foundational issues, but it is also full of practical suggestions. Proven design models, technologies, and strategies are thoroughly discussed and analyzed.

Both authors have drawn on their extensive experience with campus switching technology. As two of the first certified Catalyst instructors, they have first-hand knowledge of how to effectively communicate switching concepts. Through design and implementation experience, they have a detailed understanding of what works, as well as what doesn't work.