Introduction

Modern networks are both extremely complex and critical to business success. As organizational processes continue to increase the requirements for bandwidth, reliability, and functionality from their networks, network designers are challenged to rapidly develop and evolve networks that use new protocols and technologies. Network designers are also challenged to stay current with the internetworking industry's constant and rapid changes. Designing robust, reliable, scalable networks is a necessary skill for network operators and designers in the modern organizational environment.

This book teaches you how to design enterprise networks. You will learn about network design in the context of the Cisco Service Oriented Network Architecture (SONA) architectural framework and Enterprise Architecture. Specific topics include campus and data center infrastructure, remote connectivity, IP addressing design, routing protocol selection, designing voice networks, wireless network design, and including security in your designs.

An ongoing case study and chapter-ending review questions illustrate and help solidify the concepts presented in this book.

This book provides you with the knowledge and skills you need to achieve associate-level competency in network design. It starts you down the path to attaining your CCDA certification, because it provides in-depth information to help you prepare for the DESGN exam.

DESGN is the first step in the design curriculum that supports the Cisco network design certification track. This book focuses on the technology and methods currently available.

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