世界著名的网络系统公司Cisco公司建立于20世纪80年代．主要致力于开发、生产、销售高档网关、路由器和网络互联设备，其产品广泛应用于局域网、广域网和因特网。在微软公司一方独大的互联网络世界中．Cisco却是路由和交换领域真正的无冕之王。由于Cisco公司的产品不同于普通的计算机软、硬件产品，它的技术含量高，原理复杂，因此学习和掌握其工作原理及使用方法需要许多相关知识和实践经验。为保证使用、管理或提供Cisco产品服务的技术人员能够具备相应的技术水平，Cisco公司设立了一系列认证考试，不仅如此，其考试目标和内容也随其产品不断地发生变化。为覆盖其最新的考试目标．我们采用“原版引进，重新排版印刷"的方式以最快的速度出版Cisco认证考试系列相应科目的辅导丛书来满足读者的需求。本书作为系列中的一本，针对CCNA：640-802考试而推出。书中的内容从联网和TCP／IP的背景开始介绍，接着介绍了子网划分、Cisco网络操作系统和命令行界面，然后讲述了路由和交换．最后介绍了VLAN和WAN等内容。全书篇幅得当，内容新颖实用，不仅适用于网络管理人员、网络设计和开发人员，更是CCNA应试人员的必备材料。
FINALLY! The waiting is over, the best-seller book about the CCNA Certification is here in its latest edition:
Note: Now study hard 'lazy-heads' coz' this latest exam (640-802) is harder than the earlier one (640-801).
Paperback: 1008 pages
Publisher: John Wiley & Sons; 6th Edition edition (29 Aug 2007)
Language English
ISBN-10: 0470110082
ISBN-13: 978-0470110089
Book Description
Completely Revised for the New 2007 Version of the CCNA Exam (#640-802)
Cisco networking authority Todd Lammle has completely updated this new edition to cover all of the exam objectives for the latest version of the CCNA exam. Todd's straightforward style provides lively examples, easy-to-understand analogies, and real-world scenarios that will not only help you prepare for the exam, but also give you a solid foundation as a Cisco networking professional.
Packed with updated topics that have been added to the 2007 version of the CCNA exam, this updated study guide features expanded coverage of key topic areas plus new material on switching, network address translation, and OSPF. Inside, find the complete instruction you need, including:
*Full coverage of all exam objectives in a systematic approach, so you can be confident you're getting the instruction you need for the exam
*Practical hands-on exercises and labs to reinforce critical skills,
*Real-world scenarios that put what you've learned in the context of actual job roles
*Challenging review questions in each chapter to prepare you for exam day
*Exam Essentials, a key feature in each chapter that identifies critical areas you must become proficient in before taking the exam
*CD-ROM Includes:
*Chapter Review Questions
*Four Full-Length Practice Exams
*200 Electronic Flashcards
*Audio and Video Instruction from Todd Lammle
*Full book in searchable PDF format
Synopsis
This book is completely revised for the New 2007 Version of the CCNA Exam ( numbered 640 802), Cisco networking authority. Todd Lammle has completely updated this new edition to cover all of the exam objectives for the latest version of the CCNA exam. Todd's straightforward style provides lively examples, easy to understand analogies, and real world scenarios that will not only help you prepare for the exam, but also give you a solid foundation as a Cisco networking professional. Packed with updated topics that have been added to the 2007 version of the CCNA exam, this updated study guide features expanded coverage of key topic areas plus new material on switching, network address translation, and OSPF.Inside, find the complete instruction you need, including: full coverage of all exam objectives in a systematic approach, so you can be confident you're getting the instruction you need for the exam; practical hands on exercises and labs to reinforce critical skills, real world scenarios that put what you've learned in the context of actual job roles; challenging review questions in each chapter to prepare you for exam day; and, exam essentials, a key feature in each chapter that ide
Table of Contents
Introduction Assessment Test
Chapter 1
Internetworking
Internetworking Basics Internetworking Models
The Layered Approach
Advantages of Reference Models The OSI Reference Model
The Application Layer
The Presentation Layer
The Session Layer
The Transport Layer
The Network Layer
The Data Link Layer
The Physical Layer Ethernet Networking
Half- and Full-Duplex Ethernet
Ethernet at the Data Link Layer
Ethernet at the Physical Layer Ethernet Cabling
Straight-Through Cable
Crossover Cable
Rolled Cable Data Encapsulation The Cisco Three-Layer Hierarchical Model
The Core Layer
The Distribution Layer
The Access Layer Summary Exam Essentials Written Lab 1
Written Lab 1.1: OSI Questions
Written Lab 1.2: Defining the OSI Layers and Devices
Written Lab 1.3: Identifying Collision and Broadcast Domains
Written Lab 1.4: Binary/Decimal/Hexadecimal Conversion Review Questions Answers to Review Questions
xii
Table of Contents
Chapter 2 Introduction to TCP/IP
TCP/IP and the DoD Model
The Process/Application Layer Protocols The Host-to-Host Layer Protocols The Internet Layer Protocols
IP Addressing
IP Terminology
The Hierarchical IP Addressing Scheme
Private IP Addresses
Broadcast Addresses
Summary
Exam Essentials
Written Lab 2
Review Questions
Answers to Review Questions
Answers to Written Lab 2
Chapter 3 Subnetting, Variable Length Subnet Masks
(VLSMs), and Troubleshooting TCP/IP
Subnetting Basics IP Subnet-Zero How to Create Subnets Subnet Masks
Classless Inter-Domain Routing (CIDR) Subnetting Class C Addresses Subnetting Class B Addresses Subnetting Class A Addresses
Variable Length Subnet Masks (VLSMs) VLSM Design Implementing VLSM Networks
Summarization
Troubleshooting IP Addressing
Determining IP Address Problems
Summary
Exam Essentials
Written Labs 3
Written Lab 3.1: Written Subnet Practice #1 Written Lab 3.2: Written Subnet Practice Written Lab 3.3: Written Subnet Practice
Table of Contents
xiii
Review Questions Answers to Review Questions Answers to Written Lab 3.1 Answers to Written Lab 3.2 Answers to Written Lab 3.3
Chapter 4 Cisco’s Internetworking Operating System (IOS)
and Security Device Manager (SDM) 171
The IOS User Interface 173
Cisco Router IOS 173
Connecting to a Cisco Router 173
Bringing Up a Router 175
Command-Line Interface (CLI) 179
Entering the CLI from a Non-ISR Router 180
Overview of Router Modes 181
CLI Prompts 182
Editing and Help Features 185
Gathering Basic Routing Information 189
Router and Switch Administrative Configurations 191
Hostnames 191
Banners
Setting Passwords 194
Encrypting Your Passwords 199
Descriptions 201
Router Interfaces
Bringing Up an Interface 206
Viewing, Saving, and Erasing Configurations 212
Deleting the Configuration and Reloading the Router 214
Verifying Your Configuration 214
Cisco’s Security Device Manager (SDM) 223
Summary
Exam Essentials
Written Lab 4
Hands-on Labs
Hands-on Lab 4.1: Logging into a Router 235
Hands-on Lab 4.2: Using the Help and Editing Features 236
Hands-on Lab 4.3: Saving a Router Configuration 237
Hands-on Lab 4.4: Setting Your Passwords 237
Hands-on Lab 4.5: Setting the Hostname, Descriptions,
IP Address, and Clock Rate 239
Hands-on Lab 4.6: Installing SDM on Your Computer 241
Review Questions 242
Answers to Review Questions 247
Answers to Written Lab 4 249
xiv
Table of Contents
Chapter 5 Managing a Cisco Internetwork
The Internal Components of a Cisco Router 252
The Router Boot Sequence 253
Managing Configuration Register 254
Understanding the Configuration Register Bits 254
Checking the Current Configuration Register Value 256
Changing the Configuration Register 256
Recovering Passwords 258
Boot System Commands 261
Backing Up and Restoring the Cisco IOS 262
Verifying Flash Memory 263
Backing Up the Cisco IOS 264
Restoring or Upgrading the Cisco Router IOS 265
Using the Cisco IOS File System (Cisco IFS) 266
Using the SDM to Manage the Flash Memory 270
Backing Up and Restoring the Cisco Configuration 274
Backing Up the Cisco Router Configuration 275
Restoring the Cisco Router Configuration 276
Erasing the Configuration 277 Using the Cisco IOS File System to Manage Your
Router’s Configuration (Cisco IFS) 278 Using the SDM to Back Up/Restore and Edit
the Router’s Configuration 280
Using Cisco Discovery Protocol (CDP) 283
Getting CDP Timers and Holdtime Information 283
Gathering Neighbor Information 284
Gathering Interface Traffic Information 289
Gathering Port and Interface Information 290
Documenting a Network Topology Using CDP 292
Using Telnet
Telnetting into Multiple Devices Simultaneously 297
Checking Telnet Connections 297
Checking Telnet Users 297
Closing Telnet Sessions 298
Using SDM to Telnet into Your Router 299
Resolving Hostnames 300
Building a Host Table 300
Using DNS to Resolve Names 302
Checking Network Connectivity and Troubleshooting 305
Using the ping Command 305
Using the traceroute Command 307
Debugging 308
Using the show processes Command 310
Summary
Table of Contents
Exam Essentials
Written Lab 5
Hands-on Labs
Hands-on Lab 5.1: Backing Up Your Router IOS 314
Hands-on Lab 5.2: Upgrading or Restoring
Your Router IOS 314
Hands-on Lab 5.3: Backing Up the Router Configuration 314
Hands-on Lab 5.4: Using the Cisco Discovery
Protocol (CDP) 315
Hands-on Lab 5.5: Using Telnet 316
Hands-on Lab 5.6: Resolving Hostnames 316
Review Questions 318
Answers to Review Questions 323
Answers to Written Lab 5 325
Chapter 6 IP Routing
Routing Basics
The IP Routing Process
Testing Your IP Routing Understanding Configuring IP Routing
Configuring IP Routing in Our Network Static Routing Default Routing
Dynamic Routing
Routing Protocol Basics
Distance-Vector Routing Protocols Routing Loops
Routing Information Protocol (RIP) RIP Timers
Configuring RIP Routing Verifying the RIP Routing Tables Configuring RIP Routing Example 2 Holding Down RIP Propagations RIP Version 2 (RIPv2)
Interior Gateway Routing Protocol (IGRP)
Verifying Your Configurations
The show ip protocols Command The debug ip rip Command Enabling RIPv2 on Our Internetwork
Summary
Exam Essentials
Written Lab 6
Hands-on Labs
Hands-on Lab 6.1: Creating Static Routes Hands-on Lab 6.2: Configuring RIP Routing
xv
xvi
Table of Contents
Review Questions
Answers to Review Questions
Answers to Written Lab 6
407 413 415
Chapter 7 Enhanced IGRP (EIGRP) and Open Shortest
Path First (OSPF)
EIGRP Features and Operation Protocol-Dependent Modules Neighbor Discovery Reliable Transport Protocol (RTP) Diffusing Update Algorithm (DUAL)
Using EIGRP to Support Large Networks Multiple ASes
VLSM Support and Summarization Route Discovery and Maintenance
Configuring EIGRP Corp R1 R2 R3
Redistributing to the 871W Router from R3 Configuring Discontiguous Networks
Load Balancing with EIGRP
Verifying EIGRP
Open Shortest Path First (OSPF) Basics OSPF Terminology SPF Tree Calculation
Configuring OSPF Enabling OSPF Configuring OSPF Areas Configuring Our Network with OSPF
Verifying OSPF Configuration The show ip ospf Command The show ip ospf database Command The show ip ospf interface Command The show ip ospf neighbor Command The show ip protocols Command Debugging OSPF
OSPF DR and BDR Elections Neighbors Adjacencies DR and BDR Elections
OSPF and Loopback Interfaces
Configuring Loopback Interfaces OSPF Interface Priorities
Table of Contents
xvii
Troubleshooting OSPF 471
Configuring EIGRP and OSPF Summary Routes 474
Summary
Exam Essentials
Written Lab 7
Hands-on Labs
Hands-on Lab 7.1: Configuring and Verifying EIGRP 479
Hands-on Lab 7.2: Enabling the OSPF Process 480
Hands-on Lab 7.3: Configuring OSPF Neighbors 481
Hands-on Lab 7.4: Verifying OSPF Operation 482
Hands-on Lab 7.5: OSPF DR and BDR Elections 482
Review Questions 484
Answers to Review Questions 489
Answers to Written Lab 7 491
Chapter 8 Layer 2 Switching and Spanning Tree
Protocol (STP)
Before Layer 2 Switching
Switching Services
Limitations of Layer 2 Switching Bridging vs. LAN Switching Three Switch Functions at Layer 2
Spanning Tree Protocol (STP) Spanning Tree Terms Spanning Tree Operations
Configuring Catalyst Switches
Catalyst Switch Configuration Verifying Cisco Catalyst Switches
Cisco Network Assistant
Summary
Exam Essentials
Written Lab 8
Review Questions
Answers to Review Questions
Answers to Written Lab 8.1
Chapter 9
Virtual LANs (VLANs)
VLAN Basics
Broadcast Control
Security
Flexibility and Scalability VLAN Memberships
Static VLANs
Dynamic VLANs
xviii
Table of Contents
Identifying VLANs
Frame Tagging
VLAN Identification Methods VLAN Trunking Protocol (VTP)
VTP Modes of Operation
VTP Pruning Routing between VLANs Configuring VLANs
Assigning Switch Ports to VLANs
Configuring Trunk Ports
Configuring Inter-VLAN Routing Configuring VTP
Troubleshooting VTP Telephony: Configuring Voice VLANs
Configuring the Voice VLAN
Configuring IP Phone Voice Traffic Using the CNA to Configure VLANs and
Inter-VLAN Routing Summary Exam Essentials Written Lab 9 Review Questions Answers to Review Questions Answers to Written Lab 9.1
Chapter 10 Security
Perimeter, Firewall, and Internal Routers
Recognizing Security Threats
Mitigating Security Threats Cisco’s IOS Firewall
Introduction to Access Lists
Mitigating Security Issues with ACLs
Standard Access Lists Wildcard Masking Standard Access List Example Controlling VTY (Telnet) Access
Extended Access Lists
Extended Access List Example 1 Extended Access List Example 2
Advanced Access Lists Named ACLs Switch Port ACLs Lock and Key (Dynamic ACLs) Reflexive ACLs Time-Based ACLs
Chapter 11
Chapter 12
Table of Contents xix
Remarks 638
Context-Based Access Control (Cisco IOS Firewall) 639
Authentication Proxy 640
Monitoring Access Lists 640
Configuring Access Lists Using SDM 643
Creating ACLs with SDM 643
Creating Firewalls with SDM 647
Summary 654
Exam Essentials 655
Written Lab 10.1 655
Hands-on Labs 656
Hands-on Lab 10.1: Standard IP Access Lists 657
Hands-on Lab 10.2: Extended IP Access Lists 657
Review Questions 661
Answers to Review Questions 666
Answers to Written Lab 10.1 668
Network Address Translation (NAT) 669
When Do We Use NAT? 670
Types of Network Address Translation 671
NAT Names 672
How NAT Works 673
Static NAT Configuration 674
Dynamic NAT Configuration 675
PAT (Overloading) Configuration 675
Simple Verification of NAT 676
Testing and Troubleshooting NAT 677
Configuring NAT on Our Internetwork 679
Configuring NAT Using SDM 684
Summary 688
Exam Essentials 688
Written Lab 11 688
Hands-on Labs 689
Lab 11.1: Preparing for NAT 691
Lab 11.2: Configuring Dynamic NAT 692
Lab 11.3: Configuring PAT 694
Review Questions 696
Answers to Review Questions 699
Answers to Written Lab 11 701
Cisco’s Wireless Technologies 703
Introduction to Wireless Technology 704
The 802.11 Standards 706
Comparing 802.11 711
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Table of Contents
Cisco’s Unified Wireless Solution
Split-MAC Architecture
MESH and LWAPP
AWPP
Wireless Security Configuring Our Wireless Internetwork Summary Exam Essentials Written Lab 12 Review Questions Answers to Review Questions Answers to Written Lab 12
Chapter 13 Internet Protocol Version 6 (IPv6)
Why Do We Need IPv6? The Benefits and Uses of IPv6 IPv6 Addressing and Expressions
Shortened Expression
Address Types
Special Addresses How IPv6 Works in an Internetwork
Autoconfiguration
Configuring Cisco Routers with IPv6
DHCPv6
ICMPv6 IPv6 Routing Protocols
RIPng
EIGRPv6
OSPFv3 Migrating to IPv6
Dual Stacking
6to4 Tunneling
NAT-PT Configuring IPv6 on Our Internetwork
Configuring RIPng
Configuring OSPFv3 Summary Exam Essentials Written Lab 13 Review Questions Answers to Review Questions Answers to Written Lab 13.1
xx
Table of Contents
xxi
Chapter 14 Wide Area Networks 773
Introduction to Wide Area Networks 774
Defining WAN Terms 775
WAN Connection Types 775
WAN Support 777
Cable and DSL 779
Cable 780
Digital Subscriber Line (DSL) 782
Cabling the Serial Wide Area Network 785
Serial Transmission 785 Data Terminal Equipment and Data Communication
Equipment 786
High-Level Data-Link Control (HDLC) Protocol 787
Point-to-Point Protocol (PPP) 788
Link Control Protocol (LCP) Configuration Options 789
PPP Session Establishment 790
PPP Authentication Methods 790
Configuring PPP on Cisco Routers 791
Configuring PPP Authentication 791
Verifying PPP Encapsulation 792
PPPoE Configuration 796
Frame Relay 798
Introduction to Frame Relay Technology 798
Frame Relay Implementation and Monitoring 805
Using SDM for WAN Connections 813
Configuring PPP with Authentication Using SDM 813
Configuring PPPoE with SDM 818
Configuring Frame Relay with SDM 822
Virtual Private Networks 825
Introduction to Cisco IOS IPSec 826
IPSec Transforms 826
Configuring VPNs/IPSec Using the SDM 828
Summary
Exam Essentials
Written Lab 14
Hands-on Labs
Hands-on Lab 14.1: Configuring PPP Encapsulation
and Authentication 838
Hands-on Lab 14.2: Configuring and
Monitoring HDLC 839
Hands-on Lab 14.3: Configuring Frame Relay
and Subinterfaces 840
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xxii Table of Contents
Review Questions
Answers to Review Questions
Answers to Written Lab 14.1
Glossary
Index
