本书是在使用Cisco网络设备进行网络互连的过程中,解决疑难问题和排除网络故障的技术专著。本书共由5大部分和4个附录组成,全面介绍了Cisco网络设备各种故障诊断工具的使用方法和各种网络互联故障的排除方法。主要内容包括:故障诊断方法学、多种流行网络协议介绍、常用的故障排除仪器介绍、Cisco网络设备的寻径和交换过程、Cisco网络管理和故障诊断工具、TCP/IP连通性故障排除。Novell连通性故障排除、AppleTalk连通性故障排除、园区交换机和VLAN故障排除、帧中继故障排除以及ISDN BRI故障排除等。
本书不仅适合从事互连网络建设与管理的工程技术人员阅读和参考,也适合为获得CCNP证书而参加“Cisco Internetwork Troubleshooting”(CIT)考试的读者学习。

Part1 : Troubleshooting Tools and Methodology
Chapter 1 Troubleshooting Methodology
Using a Systematic Troubleshooting Method
The Complexity of Internetworks
The Problem-Solving Model
Step : Define the Problem
Step : Gather the Facts
Step : Consider the Possibilities
Step : Create an Action Plan
Step : Implement the Action Plan
Step : Observe the Results of the Action Plan
Step : Repeat the Problem-Solving Process
Step : Resolve the Problem
Preparing Yourself to Troubleshoot
Summary
Chapter 1 Test
Chapter 2 Protocol Characteristics Overview
Basic Protocol Characteristics
Connection-Oriented Services
Connectionless Services
Sample Connection Sequences
Detailed Protocol Characteristics
Connection-Oriented Versus Connectionless Protocols
OSI Layer Characteristics
OSI Layers to Characteristics-Routed Protocols and Routing Protocols
Summary
Chapter 2 Test
Chapter 3 Cisco Routing and Switching Processes
Routing
Switching
Basic Switching Paths
Sample Packet Flow
Switching Features That Affect Performance
Process Switching
System Buffering and Queuing
Input and Output Queues
Interface Buffers
Summary
Chapter 3 Test
Chapter 4 General Troubleshooting Tools
Low-End Cable Test Equipment
High-End Cable Testers
Digital Interface Testing Tools
Network Monitors
Protocol Analyzers
Network Management Systems
Simulation and Modeling Tools
Summary
Chapter 4 Test
Chapter 5 Cisco Management and Diagnostic Tools
Cisco Management Tools
CiscoWorks
The Netsys Network Management Suites
TrafficDirector Remote Monitoring Software
The VlanDirector Switch Management Application
WAN Manager
Cisco Diagnostic Commands
show Commands
debug Commands
ping and trace Commands
The cdp Command
……
Chapter 6 Troubleshooting Sample Exercises
Part II: Routing and Routed Protocol Troubleshooting
Chapter 7 Troubleshooting TCP/IP Connectivity
Chapter 8 Troubleshooting Novell Connectivity
Chapter 9 Troubleshooting AppleTalk Connectivity
Part III: Campus Switch and VLAN Troubleshooting
Chapter 10 Diagnosing and Correcting Catalyst Problems
Chapter 11 Troubleshooting VLANs on Routers and Switches
Part IV: WAN Troubleshooting
Chapter 12 Diagnosing and Correcting Frame Relay Problems
Chapter 13 Diagnosing and Correcting ISDN BRI Problems
Part V: Appendixes
Appendix A Chapter Test Answer Key
Appendix B Cisco Support Functions
Chapter C References and Recommended Reading
Chapter D Problem-Solving Checklist and Worksheet
Index

·帮助参加CCNP认证的人员掌握在TCP/IP、NetWare IPX/SPX和AppleTalk环境中诊断故障的方法。
·应用一个通用的问题解决模型来识别通信和配置错误。
·学习基本的分组结构和Cisco路由器功能,包括路由来交换处理器机制,以及各种级别驻留在路由器中的缓存。
·找到合适的诊断命令和工具,以解决Catalyst交换机和VLAN通信,以及帧中继中ISDN BRLWAN技术方面的难题。
基于同名的Cisco培训课程,本书教你如何完成Cisco路由器和交换机的基本硬件维护和故障诊断。如果参加CCNP认证,并准备参加CIT考试,本书是你*佳的选择。
随着更先进技术和功能加入到通信基础的结构中,管理和维护网络的工作变得越来越难,互连网络失败的花费也越来越高。本书提供了系统的合理的方法,以保持当今复杂网络的正常运行。本书主要介绍了:故障诊断的工具和方法,路由选择和被动路由协议故障诊断与排除、校园交换和VLAN故障诊断与排除,以及WAN故障诊断与排除。
《Cisco互连网络故障诊断与排除》提供了有关TCP/IP、NetWare IPX/SPX、AppleTalk LAN和WAN的连网技术、实践和故障诊断与排除的从初级到**的技术。配置实例示范了故障诊断和排除方面的技巧。问题解决检查到表和工作表面有助于你组织故障诊断和排除的步骤并编制文档。你还将找到关使用Cisco技术支持的有用信息,章末的问题与练习有助于你评估对关键概念的理解,从而帮助你顺利通过CCNP认证。