CCNA: Fast Pass

395 Pages·2003·4.461 MB·English

by  Todd Lammle, Sean Odom, Sybex

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CCNA:
Fast Pass
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CCNA™:
Fast Pass
Todd Lammle
San Francisco • London
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Associate Publisher: Neil Edde
Acquisitions Editor: Maureen Adams
Developmental Editor: Jeff Kellum
Production Editor: Elizabeth Campbell
Technical Editor: David Groth
Copyeditor: Rebecca Rider
Compositor: Scott Benoit
Graphic Illustrator: Tony Jonick
CD Coordinator: Dan Mummert
CD Technician: Kevin Ly
Proofreaders: Laurie O’Connell, Nancy Riddiough
Indexer: Nancy Guenther
Book Designer: Bill Gibson
Cover Design and Illustration: Richard Miller, Calyx Design
Copyright © 2004 SYBEX Inc., 1151 Marina Village Parkway, Alameda, CA 94501. World rights reserved. No
part of this publication may be stored in a retrieval system, transmitted, or reproduced in any way, including but
not limited to photocopy, photograph, magnetic, or other record, without the prior agreement and written per-
mission of the publisher.
Library of Congress Card Number: 2003113690
ISBN: 0-7821-4309-1
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Acknowledgments
I need to thank Neil Edde, Maureen Adams, Jeff Kellum, and Elizabeth Campbell for trying
to keep my path straight and focused. This is no easy task for you and I applaud your patience
and dedication to our vision.
Thanks also to the Sybex CD team for the super testing engine, Scott Benoit, who laid out
these pages, David Groth, for his technical take on things, and Rebecca Rider whose eagle eye
caught any grammar or spelling issues before they made it into the book.
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Contents at a Glance
Introduction xiii
Chapter 1 Planning & Designing 1
Chapter 2 Implementation & Operation 59
Chapter 3 Troubleshooting 227
Chapter 4 Technology 281
Index 355
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Contents
Introduction xiii
Chapter 1 Planning & Designing 1
1.1 Designing a Simple LAN Using Cisco Technology 2
Routers 3
Switches 3
Bridges 4
The Router, Switch, and Bridge Working Together 4
Exam Essentials 6
1.2 Designing an IP Addressing Scheme to Meet Design
Requirements 6
IP Terminology 7
The Hierarchical IP Addressing Scheme 7
Network Addressing 8
Private IP Addresses 11
Network Address Translation (NAT) 12
Exam Essentials 13
1.3 Selecting an Appropriate Routing Protocol Based on User
Requirements 13
Routing Basics 13
Distance-Vector Routing Protocols (RIP and IGRP) 15
Hybrid Routing Protocols or EIGRP 21
Link State (OSPF) 25
Exam Essentials 27
1.4 Designing a Simple Internetwork Using Cisco Technology 27
Introduction to VLANs 27
VLAN Memberships 32
Identifying VLANs 33
VLAN Trunking Protocol (VTP) 35
Exam Essentials 37
1.5 Developing an Access List to Meet User Specifications 37
Exam Essentials 39
1.6 Choose WAN Services to Meet Customer Requirements 39
High-Level Data-Link Control (HDLC) Protocol 40
Point-to-Point Protocol (PPP) 40
Frame Relay 43
Integrated Services Digital Network (ISDN) 51
Exam Essentials 54
Review Questions 55
Answers to Review Questions 57
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Contents ix
Chapter 2 Implementation & Operation 59
2.1 Configure Routing Protocols Given User Requirements 60
Preliminary Configuration 60
Configuring IP Routing in Your Network 66
Default Routing 70
Configuring RIP Routing 71
Configuring IGRP Routing 76
Lab_A 77
Lab_B 77
Lab_C 78
Verifying the IGRP Routing Tables 78
Configuring EIGRP 79
Lab_A 81
Lab_B 81
Lab_C 81
Configuring OSPF 82
Enabling OSPF 83
Configuring OSPF Areas 83
Lab_A 84
Lab_B 85
Lab_C 85
Loopback Interfaces 86
Exam Essentials 88
2.2 Configuring IP Addresses, Subnet Masks, and Gateway
Addresses on Routers and Hosts 89
Configuring Subnet Masks 89
Subnetting Practice Examples: Class C Addresses 96
Practice Example #1C: 255.255.255.192 (/26) 96
Practice Example #2C: 255.255.255.224 (/27) 97
Subnetting in Your Head: Class C Addresses 98
Subnetting Class B Addresses 99
Subnetting Practice Examples: Class B Addresses 99
Subnetting in Your Head: Class B Addresses 101
Subnetting Class A Addresses 102
Variable Length Subnet Masks (VLSMs) 102
VLSM Design 103
Implementing VLSM Networks 105
Exam Essentials 111
2.3 Configuring a Router for Additional Administrative
Functionality 111
Understanding the Configuration Register Bits 111
Checking the Current Configuration Register Value 113
Changing the Configuration Register 114
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x Contents
Recovering Passwords 115
Exam Essentials 118
2.4 Configure a Switch With VLANS and Inter-switch
Communication 118
Configuring a Switch with VLANs 118
Assigning Switch Ports to VLANs 121
Configuring Inter-Switch Communication: Trunk Ports 123
Configuring Inter-Switch Communication: Inter-VLAN
Routing 125
Configuring Inter-Switch Communication: VTP 126
Configuring the Switching in Our Sample Internetwork 128
Exam Essentials 135
2.5 Implement a LAN 135
Straight-Through Cable 135
Crossover Cable 136
Rolled Cable 137
Exam Essentials 138
2.6 Customize a Switch Configuration to Meet Specified
Network Requirements 139
Exam Essentials 141
2.7 Manage System Image and Device Configuration Files 141
Backing Up and Restoring the System Image File 141
Backing Up and Restoring the Device Configuration File 146
Exam Essentials 149
2.8 Perform an Initial Configuration on a Router 150
Cisco Router IOS 150
Connecting to a Cisco Router 150
Bringing Up a Router 151
Setup Mode 153
Command-Line Interface (CLI) 157
Exam Essentials 188
2.9 Perform an Initial Configuration on a Switch 190
1900 and 2950 Switch Startup 190
Setting the Passwords 191
Setting the Hostname 194
Setting IP Information 194
Configuring Interface Descriptions 195
Erasing the Switch Configuration 196
Exam Essentials 197
2.10 Implement Access Lists 198
Standard IP Access Lists 198
Extended Access Lists 203
Named Access Lists 208
Exam Essentials 210