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A detailed examination of interior routing protocols -- completely updated in a new edition

• A complete revision of the best-selling first edition--widely considered a premier text on TCP/IP routing protocols
• A core textbook for CCIE preparation and a practical reference for network designers, administrators, and engineers
• Includes configuration and troubleshooting lessons that would cost thousands to learn in a classroom and numerous real-world examples and case studies

Praised in its first edition for its approachable style and wealth of information, this new edition provides readers a deep understanding of IP routing protocols, teaches how to implement these protocols using Cisco routers, and brings readers up to date protocol and implementation enhancements. Routing TCP/IP, Volume 1, Second Edition, includes protocol changes and Cisco features that enhance routing integrity, secure routers from attacks initiated through routing protocols, and provide greater control over the propagation of routing information for all the IP interior routing protocols. Routing TCP/IP, Volume 1, Second Edition, provides a detailed analysis of each of the IP interior gateway protocols (IGPs). Its structure remains the same as the best-selling first edition, though information within each section is enhanced and modified to include the new developments in routing protocols and Cisco implementations. What's New In This Edition? The first edition covers routing protocols as they existed in 1998. The new book updates all covered routing protocols and discusses new features integrated in the latest version of Cisco IOS Software. IPv6, its use with interior routing protocols, and its interoperability and integration with IPv4 are also integrated into this book. Approximately 200 pages of new information are added to the main text, with some old text removed. Additional exercise and solutions are also included.

Table of Contents

Part I    Routing Basics

Chapter 1    TCP/IP Review

        TCP/IP Protocol Layers  

        IP Packet Header 

        IPv4 Addresses 

        First Octet Rule 

        Address Masks 

        Subnets and Subnet Masks 

        Designing Subnets 

        Breaking the Octet Boundary 

        Troubleshooting a Subnet Mask 

        Address Resolution Protocol (ARP) 

        Proxy ARP 

        Gratuitous ARP 

        Reverse ARP 

        Internet Control Message Protocol (ICMP) 

        Host-to-Host Layer 

        TCP 

        UDP 

        Looking Ahead 

        Summary Table: Chapter 1 Command Review 

        Recommended Reading 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 2    IPv6 Overview 

        IPv6 Addresses  

        Address Representation 

        IPv6 Address Types 

        Global Unicast Addresses 

        Identifying IPv6 Address Types 

        Local Unicast Addresses 

        Anycast Addresses 

        Multicast Addresses 

        Embedded IPv4 Addresses 

        IPv6 Packet Header Format 

        Extension Headers 

        ICMPv6 

        Neighbor Discovery Protocol 

        NDP Messages 

        Router Discovery 

        Address Autoconfiguration 

        Duplicate Address Detection 

        Neighbor Address Resolution 

        Privacy Addresses 

        Neighbor Unreachability Detection 

        Looking Ahead 

        Review Questions 

Chapter 3    Static Routing 

        Route Table  

        Configuring Static Routes 

        Case Study: Simple IPv4 Static Routes 

        Case Study: Simple IPv6 Static Routes 

        Case Study: Summary Routes 

        Case Study: Alternative Routes 

        Case Study: Floating Static Routes 

        Case Study: IPv6 Floating Static Routes 

        Case Study: Load Sharing 

        Load Sharing and Cisco Express Forwarding 

        Per Destination Load Sharing and Fast Switching 

        Per Packet Load Sharing and Process Switching 

        Which Switching Method Will Be Used? 

        Case Study: Recursive Table Lookups 

        Troubleshooting Static Routes 

        Case Study: Tracing a Failed Route 

        Case Study: A Protocol Conflict 

        Case Study: A Replaced Router 

        Case Study: Tracing An IPv6 Failed Route 

        Looking Ahead 

        Summary Table: Chapter 3 Command Review 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 4    Dynamic Routing Protocols 

        Routing Protocol Basics  

        Path Determination 

        Metrics 

        Hop Count 

        Bandwidth 

        Load  

        Delay 

        Reliability 

        Cost 

        Convergence 

        Load Balancing 

        Distance Vector Routing Protocols 

        Common Characteristics 

        Periodic Updates 

        Neighbors 

        Broadcast Updates 

        Full Routing Table Updates 

        Routing by Rumor 

        Route Invalidation Timers 

        Split Horizon 

        Counting to Infinity 

        Triggered Updates 

        Holddown Timers 

        Asynchronous Updates 

        Link State Routing Protocols 

        Neighbors 

        Link State Flooding 

        Sequence Numbers 

        Aging 

        Link State Database 

        SPF Algorithm 

        Areas 

        Interior and Exterior Gateway Protocols 

        Static or Dynamic Routing? 

        Looking Ahead 

        Recommended Reading 

        Review Questions 

Part II     Interior Routing Protocols

Chapter 5    Routing Information Protocol (RIP) 

        Operation of RIP  

        RIP Timers and Stability Features 

        RIP Message Format 

        Request Message Types 

        Classful Routing 

        Classful Routing: Directly Connected Subnets 

        Classful Routing: Summarization at Boundary Routers 

        Classful Routing: Summary 

        Configuring RIP 

        Case Study: A Basic RIP Configuration 

        Case Study: Passive Interfaces 

        Case Study: Configuring Unicast Updates 

        Case Study: Discontiguous Subnets 

        Case Study: Manipulating RIP Metrics 

        Case Study: Minimizing the Impact of Updates 

        Troubleshooting RIP 

        Looking Ahead 

        Summary Table: Chapter 5 Command Review 

        Recommended Reading 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 6     RIPv2, RIPng, and Classless Routing 

        Operation of RIPv2  

        RIPv2 Message Format 

        Compatibility with RIPv1 

        Classless Route Lookups 

        Classless Routing Protocols 

        Variable-Length Subnet Masking 

        Authentication 

        Operation of RIPng 

        Configuring RIPv2 

        Case Study: A Basic RIPv2 Configuration 

        Case Study: Compatibility with RIPv1 

        Case Study: Using VLSM 

        Case Study: Discontiguous Subnets and Classless Routing 

        Case Study: Authentication 

        Configuring RIPng 

        Case Study: Basic RIPng Configuration 

        Case Study: RIPng Process Customization 

        Case Study: Metric Manipulation 

        Case Study: Route Summarization 

        Troubleshooting RIPv2 and RIPng 

        Case Study: Misconfigured VLSM 

        Looking Ahead 

        Summary Table: Chapter 6 Command Review 

        Recommended Reading 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 7    Enhanced Interior Gateway Routing Protocol (EIGRP) 

        The Roots of EIGRP: An Overview of IGRP  

        Process Domains 

        IGRP Timers and Stability Features 

        IGRP Metrics 

        From IGRP to EIGRP 

        Operation of EIGRP 

        Protocol-Dependent Modules 

        Reliable Transport Protocol 

        Neighbor Discovery/Recovery 

        Diffusing Update Algorithm 

        DUAL: Preliminary Concepts 

        DUAL Finite State Machine 

        Diffusing Computation: Example 1 

        Diffusing Computation: Example 2 

        EIGRP Packet Formats 

        EIGRP Packet Header 

        General TLV Fields 

        IP-Specific TLV Fields 

        Address Aggregation 

        EIGRP and IPv6 

        Configuring EIGRP 

        Case Study: A Basic EIGRP Configuration 

        Case Study: Unequal-Cost Load Balancing 

        Case Study: Setting Maximum Paths 

        Case Study: Multiple EIGRP Processes 

        Case Study: Disabling Automatic Summarization 

        Case Study: Stub Routing 

        Case Study: Address Summarization 

        Authentication 

        Troubleshooting EIGRP 

        Case Study: A Missing Neighbor 

        Stuck-in-Active Neighbors 

        Looking Ahead 

        Summary Table: Chapter 7 Command Review 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 8     OSPFv2 

        Operation of OSPF  

        Neighbors and Adjacencies 

        Hello Protocol 

        Network Types 

        Designated Routers and Backup Designated Routers 

        OSPF Interfaces 

        OSPF Neighbors 

        Flooding 

        Areas 

        Router Types 

        Partitioned Areas 

        Virtual Links 

        Link-State Database 

        LSA Types 

        Stub Areas 

        Route Table 

        Destination Types 

        Path Types 

        Route Table Lookups 

        Authentication 

        OSPF over Demand Circuits 

        OSPF Packet Formats 

        Packet Header 

        Hello Packet 

        Database Description Packet 

        Link State Request Packet 

        Link State Update Packet 

        Link State Acknowledgment Packet 

        OSPF LSA Formats 

        LSA Header 

        Router LSA 

        Network LSA 

        Network and ASBR Summary LSAs 

        Autonomous System External LSA 

        NSSA External LSA 

        Options Field 

        Configuring OSPF 

        Case Study: A Basic OSPF Configuration 

        Case Study: Setting Router IDs with Loopback Interfaces 

        Case Study: Domain Name Service Lookups 

        Case Study: OSPF and Secondary Addresses 

        Case Study: Stub Areas 

        Case Study: Totally Stubby Areas 

        Case Study: Not-So-Stubby Areas 

        Case Study: Address Summarization 

        Case Study: Filtering Between Areas 

        Case Study: Authentication 

        Case Study: Virtual Links 

        Case Study: OSPF on NBMA Networks 

        Case Study: OSPF over Demand Circuits 

        Troubleshooting OSPF 

        Case Study: An Isolated Area 

        Case Study: Misconfigured Summarization 

        Looking Ahead 

        Summary Table: Chapter 8 Command Review 

        Recommended Reading 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises

Chapter 9 OSPFv3 

        Operation of OSPFv3  

        OSPFv3 Differences from OSPFv2 

        OSPFv3 Messages 

        An Overview of OSPFv3 LSAs 

        OSPFv3 LSA Formats 

        The Router LSA 

        Network LSA 

        Inter-Area Prefix LSA 

        Inter-Area Router LSA 

        AS-External LSA 

        Link LSA  489
        Intra-Area Prefix LSA 

        Options Field 

        Configuring OSPFv3 

        Case Study: A Basic OSPFv3 Configuration 

        Case Study: Stub Areas 

        Case Study: Multiple Instances on a Link 

        Case Study: OSPFv3 on NBMA Networks 

        Troubleshooting OSPFv3 

        Case Study: Frame-Relay Mapping 

        Looking Ahead  509
        Summary Table: Chapter 9 Command Review 

        Recommended Reading 

        Review Questions 

        Configuration Exercises 

Chapter 10 Integrated IS-IS 

        Operation of Integrated IS-IS  

        IS-IS Areas 

        Network Entity Titles 

        IS-IS Functional Organization 

        Subnetwork Dependent Functions 

        Subnetwork Independent Functions 

        IS-IS PDU Formats 

        TLV Fields 

        IS-IS Hello PDU Format 

        IS-IS Link State PDU Format 

        IS-IS Sequence Numbers PDU Format 

        Extensions to IS-IS 

        3-Way Handshaking 

        Domain-Wide Prefix Distribution 

        Wide Metrics 

        Routing IPv6 with IS-IS 

        Dynamic Hostname Exchange 

        Multiple Topologies 

        Mesh Groups 

        Flooding Delays 

        Improving SPF Efficiency 

        Configuring Integrated IS-IS  

        Case Study: A Basic IPv4 Integrated IS-IS Configuration 

        Case Study: Changing the Router Types 

        Case Study: An Area Migration 

        Case Study: Route Summarization 

        Case Study: Authentication 

        Case Study: A Basic Integrated IS-IS Configuration for IPv6 

        Case Study: Transition to Multiple Topology Mode 

        Case Study: Route Leaking Between Levels 

        Case Study: Multiple L1 Areas Active on A Router 

        Troubleshooting Integrated IS-IS 

        Troubleshooting IS-IS Adjacencies 

        Troubleshooting the IS-IS Link-State Database 

        Case Study: Integrated IS-IS on NBMA Networks 

        Looking Ahead 

        Summary Table: Chapter 10 Command Review 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Part III    Route Control and Interoperability

Chapter 11    Route Redistribution 

        Principles of Redistribution  

        Metrics 

        Administrative Distances 

        Redistributing from Classless to Classful Protocols 

        Configuring Redistribution 

        Case Study: Redistributing IGRP and RIP 

        Case Study: Redistributing EIGRP and OSPF 

        Case Study: Redistribution and Route Summarization 

        Case Study: Redistributing OSPFv3 and RIPng 

        Case Study: Redistributing IS-IS and RIP/RIPng 

        Case Study: Redistributing Static Routes 

        Looking Ahead 

        Summary Table: Chapter 11 Command Review 

        Review Questions 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 12    Default Routes and On-Demand Routing 

        Fundamentals of Default Routes  677
        Fundamentals of On-Demand Routing 

        Configuring Default Routes and ODR 

        Case Study: Static Default Routes 

        Case Study: The Default-Network Command 

        Case Study: The Default-Information Originate Command 

        Case Study: Configuring On-Demand Routing 

        Looking Ahead 

        Summary Table: Chapter 12 Command Review 

        Review Questions 

Chapter 13    Route Filtering 

        Configuring Route Filters  

        Case Study: Filtering Specific Routes 

        Case Study: Route Filtering and Redistribution 

        Case Study: A Protocol Migration 

        Case Study: Multiple Redistribution Points 

        Case Study: Using Administrative Distances to Set Router Preferences 

        Looking Ahead 

        Summary Table: Chapter 13 Command Review 

        Configuration Exercises 

        Troubleshooting Exercises 

Chapter 14    Route Maps 

         Basic Uses of Route Maps  

         Configuring Route Maps 

         Case Study: Policy Routing 

         Case Study: Policy Routing and Quality of Service Routing 

         Case Study: Route Maps and Redistribution 

         Case Study: Route Tagging 

         Case Study: Filtering Tagged Routes Out of OSPF Route Table 

         Case Study: IPv6 Redistribution with Route Maps 

         Looking Ahead 

         Summary Table: Chapter 14 Command Review 

         Review Questions 

         Configuration Exercises 

         Troubleshooting Exercise 

Part IV    Appendixes

Appendix A    Tutorial : Working with Binary and Hex

Appendix B    Tutorial : Access Lists

Appendix C    CCIE Preparation Tips 

Appendix D    Answers to Review Questions 

Appendix E    Solutions to Configuration Exercises 

Appendix F    Solutions to Troubleshooting Exercises 

About the Authors

Jeff Doyle, CCIE #1919, is a professional services consultant with Juniper Networks, Inc., in Denver, Colorado. Specializing in IP routing protocols and MPLS traffic engineering, Jeff has helped design and implement large-scale Internet service provider networks throughout North America, Europe, and Asia. Jeff is also a Certified Cisco Systems Instructor.

Jennifer DeHaven Carroll, CCIE No. 1402 is a principal consultant with Lucent Technologies. She has planned, designed, and implemented many large networks over the past 13 years. She has also developed and taught theory and Cisco implementation classes on all IP routing protocols.

Jul 6, 2006     J Stowe from Wylie TX
Not Your fathers TCP/IP Volume 1 2nd Edition
This is not your fathers Routing TCP/IP by Jeff Doyle, Jennifer Carroll. If you think this book is just a rehash of Jeffs version 1 volume 1 you are wrong. This is a very up to date complete revamp. The only thing it has in common is the ease of reading. There is a lot of IPV6 packed into these 1000 or so pages. OSPFv3 was invented just so Jeff could include it in his book (just kidding) but it is well covered. I like the fact he left out a lot of coverage on IGRP other than a history mention. I am not going to go through chapter by chapter but I will discuss the 4 different parts Jeff and Jennifer sectioned the book into. Part l Routing Basics goes over a lot of grass roots knowledge required for any discussion of routing . Higher order topics are introduced IPV6 got into the nitty gritty and the intricacies in an understandable and direct manner. I found the case studies aided in my ability to see particle reasoning and helped me gain a deeper understanding of each subject. Dynamic routing protocols gave a thorough presentation of the mechanics behind the most popular routing protocols. Part ll Interior Routing protocols Case studies covering RIP, RIP2, EIGRP, OSPF2, OSPF3, and IsIs. One of the best explanations of ISIS I have encountered. No digging here it is presented. It is all broken down and explained. Part lll Possibly the best part of the book complicated subjects handled in a straight forward manner. No way to get mixed up in this portion of the book even though it is about mixing up routes and filtering them back out and redistributing them. Part lV You will be going back and forth to these pages quite frequently for answers and solutions. At least I did.

May 21, 2006     ISSAM EL ZEIN (issamelzein@yahoo.com) from Lebanon - Beirut
Need to Read first before any CCIE book on the earth
This book is well organized and very helpful book for anyone need to prepare for CCIE exam, and should be read first before any CCIE book on the earth, cuz each topic written from A to Z with detailing everything. We need more CCIE Books from Jeff and Jennifer Amazing work

May 18, 2006     Mark Reyero (mark_reyero@hotmail.com) from Centreville, MD
An Absolute Must Have for CCIE Candidates!
I read the original edition of Jeff Doyles Routing TCP/IP, Volume I (ISBN 1587052024) a few years back while studying from my CCIE. The first edition was a must read for any CCIE candidate. I am happy to say that the second edition improves upon and updates this essential classic in Cisco and network architecture.

Lets face it, internetworking has evolved tremendously since the original edition was published in 1998. The CCIE lab has also changed enormously since the first edition. For example, gone is IGRP, IPv6 is on the horizon. Routing TCP/IP, Volume I, Second Edition reflects these changes.

For new Doyle readers, the book covers the essential Interior Routing Protocols (IGP) for IP version 4 and IPv6, including static routing, RIP (version 1 and 2), EIRGP, OSPF, and IS-IS. The chapter on IGRP from the first edition is dropped, and instead is briefly discussed from a historical perspective in the EIGRP chapter. The second half of the books discussed the intricacies of routing protocol redistribution and introduces the reader to the concepts and uses of distribution lists and route-maps. Readers interested in BGP and Multicast should look to Doyle and Carrolls Routing TCP/IP, Volume II (ISBN 1578700892).

I especially loved the IPv6 content incorporated throughout the book. Prior to reading this new edition, my knowledge and understanding of IPv6 was at an elementary level. I found Doyles explanation of routing IPv6 and examples to be concise, practical, and very helpful. I was easily able to walk through most of the configuration exercises on my home lab. Guess what, routing IPv6 isnt much different than routing IP version 4.

Who would have guessed that you could improve upon a classic? If you are a season veteran, the updated version is well worth the purchase price. For the aspiring CCIE, the book is an absolute must have.

Mark G. Reyero, CCIE 12932

Apr 10, 2006     Rik Guyler, Sr. Network Engineer from USA
Another mandatory book for your "required reading" list
Doyles first edition of Routing TCP/IP, Volume 1 became the gold standard of TCP/IP routing preparation for prospective CCIE candidates. With the new content of the CCIE lab, the expectation was very high that this book would also become part of a CCIE candidates required reading list. It went on mine. The things I like about this book: While much of the content of this book was first published in the first edition, there were nevertheless many enhancements spread throughout, reflecting on newer IOS versions, newer features, etc. Much changed during the seven year stretch between the two so the second edition was refreshed to reflect that, even though much of the core content stayed the same. Notably, the major additions to this book center on IPv6 and related technologies, such as RIPng and OSPFv3. Doyle has historically shown strong ability to break down technically difficult material and present it in such a way as to appeal to both novice and expert alike. This book did not disappoint as it provided a basic but detailed discussion of IPv6. From addressing to integrated services, the reader will have a firm grasp of IPv6 from a Cisco IOS perspective. The reader will also find numerous references to IPv6 configuration and functionality differences where applicable throughout the other chapters of this book. The first edition of this book was fairly clean as editorial errors are concerned and this edition follows in its footsteps. Certainly there are some minor mistakes here and there but I was not able to identify any that were notable. The things I do not like about this book: This book lived up to my expectations and there was nothing that disappointed me.

Jan 7, 2006     Scott Evans (munkey1979@yahoo.com) from Nebraska
Best book ever on TCP/IP
After hearing about how valuable and informative the first edition of Routing TCP/IP was I knew I had to give the new and improved Routing TCP/IP Vol 1, Second Edition a go. After passing my CCNA test a few months ago, the natural route is to pursue the CCNP certification. Even though this book is labeled CCIE Professional Development, it is also an in-depth resource for your CCNP routing studies.

Routing TCP/IP Vol 1 starts off with a few chapters of Routing basics. You get a good review of the TCP/IP protocol suite, an IPv6 Overview, and a review of Static and Dynamic Routing. The Chapter on IPv6 is quite in-depth. IPv6 addressing, Header format, ICMPv6 and Neighbor Discovery Protocol are among the topics in this chapter. After the first review section you enter the heart of the book. Part II, Interior Routing Protocols. RIP, RIPv2, classless routing, OSPF, EIGRP, and Integrated IS-IS are the chapters you will be diving into. Each chapter explains proper Operation, Configuration and Troubleshooting of its respective protocol. Anything and everything you will ever want to know about the aforementioned Interior routing protocols are within these pages. The last part of Routing TCP/IP Vol 1is the Route Control and Interoperability section. This section of the book goes over Route Redistribution, ODR (On-demand Routing), Route Filtering and Route maps.

Just like most Cisco Press books, the figures are easy to follow along with and are clear. The command output examples are easy to understand and follow. The examples in the book make it easy to see how to apply all the information. Im a visual person, and to see all the technology applied and the output shown helps a lot. Routing TCP/IP Vol 1 Second Edition will be beneficial for a person holding a CCNP certification looking to move on to the CCIE Routing & Switching Certification. In my opinion, it will also benefit a CCNA studying for the CCNP certification. More importantly the Building Scalable Cisco Internetworks (BSCI) 642-801 test. The Interior Routing chapters on OSPF, EIGRP and Integrated IS-IS will help you understand more then enough to pass the BSCI test, along with the BSCI Self-Study and Exam Cert guide. Routing TCP/IP Vol 1will make a excellent addition to a Cisco engineers home Cisco Press library, not to mention a perfect book reference to have at the work place. Jeff Doyle and Jennifer Carrols writing styles are excellent. They make understanding and consuming all this information painless. It might not be painless for everyone, but if you are a information hog like myself, then it will be rather painless. I would buy another Cisco Press title written by Jeff Doyle and/or Jennifer Carrol in a heartbeat. On a Scale of 1 to 5, 5 being the highest. I would give Routing TCP/IP Vol 1 Second edition a 5 without a doubt. The information is in-depth, easy to understand and relatively painless to retain. Yeah, you might have to read it twice, but isnt it that way with all technology books like this? Especially books on Cisco Technology.

I recommend this book to anyone studying for the BSCI CCNP test, a CCNP looking to move on to the CCIE Routing & Switching written test, or a Network Engineer looking to know the ins and outs of Interior Routing Protocols. Routing TCP/IP Vol1 will make a perfect work reference or a home reference for your personal Cisco Press Library.

Off to purchase Routing TCP/IP Vol 2 for Exterior Routing Protocols. If it is anything close to this Routing TCP/IP Vol 1 Second Edition, then I will be a very happy camper.

Dec 17, 2005     Wole Akpose from Baltimore
Great work
Jeff Doyle has done it again. Routing TCP/IP Volume I second edition has reaffirmed Jeff and Jennifers excellent pedagogical prowess, with the TCP/IP routing framework. When I read routing TCP/IP volumes I and II several years ago, the excellent presentation of the various routing protocols in a clear case study driven manner helped me develop a firm understanding of the various interior and exterior routing protocols available for TCP/IP. TCP/IP Volume I second edition is a more concise edition of the first edition with several new chapters on IP version 6 specific protocols.

Unlike the 14 chapter, 1026 pages long first edition, the second edition is organized into 14 chapters also but is 910 pages long and comes with a 45 day free online access at safari book online. Thats a great deal. The organization of this edition is similar to the first; Part I deals with basic concepts, Part II with interior routing protocols and part three discusses routing controls and interoperability. Part IV is a collection of appendices and solutions to problems discussed throughout the text.

Part one now includes an expanded review of IP version 6 in a chapter by itself. This is arguably one of the better treatments of the subject I have seen in a text and provides a concise introduction to IP version 6 protocol headers, control protocols and addressing.

Part two includes an expanded treatment of RIP version 2 as well as the new RIPng which is an RIP implementation for IP v6. The now deprecated IGRP has been dropped and a totally new chapter on OSPF version 3 explains the updated OSPF for IP v6.

Part three, like one and two also includes updated and new case studies to reflect current and future trends. A new case study on IP version 6 redistribution with route maps shows a simple example of route redistribution from RIPng to IS-IS for IP v6 networks.

Like previous Doyles work, this book is heavily invested in sample configurations using Cisco IOS, but the clear treatment of technology theories and directions make this book a great reference for all internetworking engineers out there.

The clear and detailed presentation of the materials make this book accessible to networking professionals of all grade, newbie to experts alike. And as organizations prep themselves for the inevitable migration to IP v6 , Jeff Doyles book is definitely an additional resource for the engineers whose job it will be to provision the change.

Definitely not the be all book on TCP/IP , the book will likely become a key ingredient in the arsenal of network managers, administrators and even researches and an excellent guide to Cisco network professionals and students. If anything, I will recommend this volume, and highly so, to aspiring Cisco Certification candidates and anyone who already owns or have read the first edition. This edition is indeed an upgrade.

Nov 22, 2005     Niloufer Tamboly, CISSP
Jeff does it again!!!
The second edition of the book was a long felt need as there have been a lot of changes in the CCIE certification blueprint as well the Cisco IOS. This is the most highly recommended book for anyone attempting to study for any of the CCIE certifications as Routing and Switching are covered in varying degrees in all the CCIE written Exams. The detailed coverage of IPV6 is a highpoint of this book as it is very well explained with the help of various examples and also by comparing and contrasting it with IPV4 so as to bring out the true subtleness of and the glaring differences between the two. By showing how each task is done differently with IPV6 makes the difficult and confusing address scheme which is in hex much more understandable. Through out the book where ever applicable the authors use IPV6 addresses during various configuration examples to clarify the concepts. The principles of route redistribution are explained with the help of case studies and sample output which make this usually difficult to understand and confusing topic much more bearable. Redistribution remains the cause of most problems in the lab and once routes are redistributed a variety of problems crop up. Jeff explains the right way to do this and most importantly what not to do. The troubleshooting case study at the end of the chapter explains the method to troubleshoot that particular protocol and provides tips on what to basically look for. Then the troubleshooting exercises provide the opportunity to test the troubleshooting knowledge. This knowledge comes in handy for the CCIE LAB as time is always short and if something breaks down troubleshooting skills can make the difference between getting your magical Number or a visit to the LAB again. By totally revising and revamping the contents of the book the authors and reviewers have made sure that this book remains a must buy for all seasoned network engineers and students of Cisco Certifications. The author Jeff Doyle is a professional services engineer and IPv6 solutions manager. The coauthor Jennifer Carroll is an independent network consultant in Redmond, WA. I give this book 4 stars on a scale of 5, 5 being the highest. I strongly recommend this book. Niloufer Tamboly, CISSP

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