Chapter 1. Network Infrastructure Design

Chapter Outline

Introduction

1-1 Physical Network Design

1-2 IP Subnet Design

1-3 VLAN Network

1-4 Routed Network

Summary

Questions and Problems

Objectives

• Understand the purpose of the three layers of a campus network design

• Understand the issue of data flow and selecting the network media

• Develop techniques for IP allocation and subnet design

• Understand the process of configuring a VLAN

• Understand the issues of configuring the Layer 3 routed network

Key Terms

core

distribution layer

access layer

CIDR

ISP

intranets

NAT

PAT

Overloading

supernet

gateway

broadcast domain

flat network

VLAN (virtual LAN)

port-based VLAN

tag-based VLAN

protocol-based VLAN

VLAN ID

802.1Q

static VLAN

dynamic VLAN

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