Cisco Certification: Bridges, Routers and Switches for CCIEs


CISCO Certification: Bridges, Routers and Switches for CCIEs provides a systematic roadmap to guide candidates in expanding their internetworking knowledge base as well as refining internetwork "issue spotting," troubleshooting and analysis skills. All topics covered will involve a hands-on format including: step-by-step configuration explanations, expert use of Cisco IOS Show commands, and detailed analysis using Cisco IOS debugging tools. After you've used this book as a roadmap to prepare for the CCIE exam, ...
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CISCO Certification: Bridges, Routers and Switches for CCIEs provides a systematic roadmap to guide candidates in expanding their internetworking knowledge base as well as refining internetwork "issue spotting," troubleshooting and analysis skills. All topics covered will involve a hands-on format including: step-by-step configuration explanations, expert use of Cisco IOS Show commands, and detailed analysis using Cisco IOS debugging tools. After you've used this book as a roadmap to prepare for the CCIE exam, you'll continue to treasure it as a comprehensive reference for both technical reference and problem-solving.

This roadmap, on-the-job reference and test preparation guide rolled into one, prepares candidates to challenge Cisco Certified Internetworking Expert (CCIE) examinations. This is definitely not a question and answer self-study tutorial. Rather, it's an advanced hands-on configuration and troubleshooting reference based on the CCIE prep course. The authors include question & answer sessions along with very good hands-on configuration guides and clear explanations that will undoubtedly save a lot of troubleshooting time with connections and default paths. Make no mistake, a CCNA certification is not the prerequisite for this volume, but a CCNP along with IOS and advanced networking texts from the Cisco Reference Library should do it.

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Editorial Reviews

Bill Carmada
OK, close your eyes and imagine. You're going for your CCIE. You've taken your 100-question written exam. It was tough, but you survived. Now, it's the morning after a long flight, and you're standing next to a senior Cisco internetworking engineer in one of Cisco's exam labs. You have no notes. You're facing a stack of routers and switches with varying interfaces, each running a different version of IOS. You're handed instructions:

1. Please configure an OSPF domain with variable length subnets for the address space of Some are to be 24 bits; others 26 bits.

2. Next, please configure an RIP domain with 24-bit subnets for network 3. Once both OSPF and RIP domains are configured, please exchange routing table information between them via the process of redistribution.

4. Finally, please ping all the interfaces in both the RIP and OSPF domains.

Did you catch the conflict between RIP and OSPF subnetting rules which prevents RIP from recognizing OSPF routes, so RIP routers can't ping OSPF domain interfaces? Did you know you could solve the problem using OPSF route summarization? Great. But don't relax yet: the Cisco engineer is introducing faults into your network. Your job: to recognize, isolate, document, and resolve every one.

This is why only 30% of CCIE candidates pass on the first attempt. And it's why you need Cisco Certification: Bridges, Routers and Switches for CCIEs, by Andrew Bruce Caslow. Caslow is a long-time CCIE whose company is one of only nine that have been certified by Cisco to provide CCIE training. He compares the CCIE lab to the Apollo 13 mission the moment after that legendary on-board explosion; you never know what terrifying event will come at you next, so you'd better be prepared. And he's distilled years of Cisco training expertise into a set of practical techniques and thought processes you can use to spot just about any challenge you're likely to encounter.

You'll start with an in-depth review of the physical and data-link foundation of Cisco-based internetworks including LAN and WAN interface configuration, non-broadcast multiple access configuration (Frame Relay, X.25 and ATM), and switched configuration (ISDN and asynchronous).

Next, you'll move on to the network layer: IP address planning, subnetting, route summarization, and the mechanics of configuring RIP, IGRP, OSPF and EIGRP. Building on what you've learned, you'll master routing IP between autonomous systems using BGP4. By now, you've learned all you need to design, implement, maintain and troubleshoot large-scale IP internetworks. But not all you need to pass the CCIE written and lab exams. Caslow also walks you through configuring non-IP routing protocols such as IPX, AppleTalk and DECnet, as well as non-routable protocols including SNA and NetBIOS.

Then, once your IP or multi-protocol traffic is configured and working properly, you'll learn detailed techniques for controlling and filtering it with access lists, access expressions, queue lists, dialer lists and routemaps.

Cisco Certification: Bridges, Routers and Switches for CCIEs is replete with tips and tricks for analyzing, configuring and troubleshooting internetworks more effectively-in or out of the lab. Because, hey, as long as you're going to pass the first time, you might as well have a book you can use afterwards, right?

Bill Carmada @ Cyberian Express

Provides a roadmap to guide candidates for Certified Cisco Internetworking Expert (CCIE) certification. Focuses on configuring, monitoring, and troubleshooting Cisco routers and switches with the Cisco Internetwork Operating System. Reviews major protocols, and covers test-taking strategies, with many checklists, chapter summaries, sample scenarios, and questions with answers. Annotation c. by Book News, Inc., Portland, Or.
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Product Details

  • ISBN-13: 9780130825377
  • Publisher: Prentice Hall Professional Technical Reference
  • Publication date: 12/1/1998
  • Pages: 840

Meet the Author

Andrew Caslow is both a CCIE and CCI (Certified Cisco Instructor.). He has been working with Cisco technologies for more than seven years. He is employed by the Cisco Certified Training Partner Automation Research Systems Ltd. (ARS) of Alexandria, Virginia.
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Read an Excerpt

Chapter 2: Getting Started

The Core-Level

Just as "all roads lead to Rome" all internetwork segments lead to the Core. The Core is the top level aggregation point for the entire internetwork. The Core-level is focused on switching packets, frames, and cells as fast as possible. The core should be designed with routers and switches that can forward packets as fast as possible and with connections that possess ample bandwidth. Core routers should not be performing tasks such as access-list filtering, network address translation, encryption, or compression. These tasks should be performed as far out on the edge of the internetwork as possible: at the distribution or access levels.

Three resources you never want any routers or switches to exhaust are:

1. CPU Cycles
2. Memory
3. Bandwidth

Since core-level routers and switches are the aggregation point of an organization's entire internetwork, it is especially important that core routers and switches do not run out of the resources listed above. Therefore, Cisco core routers and switches are configured with high-speed switching architectures, high-performance microprocessors (multiple high-performance processors), a large amount of memory, and high bandwidth connections.

Traditionally, the core-level was composed of high speed routers with high speed connections. In the late 1980's and early 1990's, Cisco made its mark with the AGS+ router. it was during this time that Cisco captured the Internet routing market with routers like the AGS+. The AGS+ became the core router used in the infrastructure of virtually every ISP in the early 1990's. In 1993, Cisco introduced the Model 7000 router. The Model 7000 router is the direct descendant of the AGS+ and the direct predecessor of the current model 7500 core router. Today, model 7500 routers can be loaded with high performance route switch processors and high performance interface processors such as the versatile interface processor (VIP) for optimized routing. Even with the optimized features of the 7500 series routers, many internetwork designers were searching for alternative core routing technologies such as ATM switching or packet over SONET switching.

Cisco is innovating in new core-level switching technologies with products like the gigaswitch router (GSR) Model 12000 router, the Catalyst 8500 layer three switch, the Catalyst 5000 with a supervisor Ill module and a NetFlow feature card, and with the LightStream and Stratacom family of ATM switches.

The Model 12000 router (GSR) contains both optimized hardware and software features. From a hardware perspective, the GSR is designed with an optimized crossbar switching fabric and can be configured with OC-3, OC-12, and OC-48 interface processors. From a software perspective, the GSR supports Cisco Express forwarding that optimizes layer three WAN switching.

Core-level campus area networks can deploy the Catalyst 8500 layer three switch for wire speed forwarding of IP and IPX traffic over ethernet, fast-ethernet, and gigabit ethernet. From a hardware perspective, the Catalyst 8500, performs layer three forwarding of IP and IPX packets at the hardware level. From a software perspective, the Catalyst 8500 uses the same Cisco Express Forwarding technology of the Model 12000 router.

Optimized core-level routing can also be performed with Catalyst 5000 switches with Supervisor III Modules and NetFlow Feature cards. If an ATM core is desired, the LightStream and Stratacomm ATM switches can be deployed for core-level ATM switching.

The Distribution Level

The distribution level is the intermediary between the core and the access levels. The distribution level terminates all of the access level connections and aggregates them to the core. Many times over subscription is performed at the distribution level. For every T-1 connection to the core, a distribution-level router may have five T-1 connections from the access-level. Common distrib tion class routers are the 4000 family and 3600 family of routers, It is not uncommon to see 7200 and 7500 routers also deployed at the distribution level of large-scale internetworks.

Access-list filtering, compression and encryption can be performed at the distribution level of a hierarchical routed internetwork; however, it is optimal for the access-level routers to perform these tasks.In a campus-area network, routers at the distribution level must perform access-list filtering, compression, and encryption. In these networks, access-level equipment do not consist of routers but rather of hubs or LAN switches. Common campuslevel distribution routers are Model 4000, 7200, or even 7500 routers with a fast-ethernet interface or a Route Switch Module residing in a Catalyst 5000.

The Access-Level

The access-level is a local network's driveway into the internetwork. in a WAN environment, it is the terminating point for a local user segment connected either directly to the core or to a distribution-level router. For example, it is the branch office of a bank that has a single ethernet connection that connects to headquarters over a 128 Kbps fractional T-1 line. Common accesslevel routers are the Model 1600, 2500, and 2600 routers. In a WAN environment, access-level routers should perform access-list filtering, compression, network address translation, and encryption.

In a campus-area network, the access-level is a shared hub or a switched LAN. Neither of these devices have the intelligence to perform access-list filtering, compression, network address translation, and encryption....

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Table of Contents

1: Introduction to the CCIE Study Guide
2: Getting Started: July-4th-2:10 pm
3: General Guidelines for Cisco Router Interface and Catalyst Port Configuration
4: Configuring Frame-Relay to Map or Not to Map That is the Question
5: Configuring ISDN and Dial-on-Demand Routing
6: Configuring the Catalyst 5000 and VLANs
7: Configuring ATM
8: Level One Summary and Review Cisco Fusion Revisited
9: IP Addressing and the IP Routing Process
10: Configuring RIP, IGRP, and EIGRP
11: Configuring OSPF
12: Redistribution of IP Routes
13: Level II Summary
14: Exterior Routing with BGP
15: Introduction to Configuring non-IP Routing Protocol Suites
16: IPX Configuration
17: AppleTalk Configuration
18: Configuration DECNET
19: Level IV Summary
20: Bridging Non-Routable Traffic
21: Configuring Source Route Bridging and DLSw+
22: Level V Summary
23: Managing Traffic
24: Configuring IP Access-Lists
25: Configuring Non-IP Routing Access-Lists
26: Access-Lists for Non-Routable Traffic
27: Prioritizing Traffic
28: Configuring Route-Maps
29: Level Six Summary
30: Troubleshooting Routers and Switches
31: Test Preparation Checklist and Test-Taking Techniques
32: Sample Scenarios
Appendix A: Navigating the Cisco IOS
Appendix B: Can You Spot the Issues Answer Key
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Preface: "When we think about the future of the world, we always have in mind its being at the place where it would be if it continued to move as we see it moving now. We do not realize that it moves not in a straight line, but in a curve, and that its direction is changing constantly."
-Ludwig Wittgenstein

Writing this book was a tremendous challenge. The potential topics of CCIE certification are vast, ever expanding and ever changing. In order to cover the wide range of topics covered in this book, assistance from several associates in the Cisco community was required. In particular, I would like to thank Valeriy Pavlichenko (CCIE) for providing technical editing services. Valeriy is one of the most disiplined and systematic internetworking engineers in the business. Without his feedback, much of the work of this book would not have been done. Secondly, special thanks must be given to Brent Baccala, the editor of the Internet Encyclopedia at. Brent provided key contributions to Chapters Nine, Eleven and Fourteen. Brent Baccala is blessed with a tremendous combination of brilliant technical insight and strong writing skills. Brent's ability to explain highly technical topics clearly has been tremendous inspiration to me. Finally, special thanks must be given to fellow Cisco Certified Instructor and CCIE Rajah Chowbay. Rajah assisted in drafting Chapter Seven of this book as well as provided tremendous influence in the structure in each and every chapter of this book.

Thanks must also be given to Mr. Albert Spaulding and his company ARS, Ltd. (Alexandria, Virginia) for providing the time and resources to write this book. Thank you Mr Spaulding andARS!

Specific contributions to the book came from the following associates:
  • Paul Bourghese (CCIE and Certified Cisco Instructor) for developing Chapter Twenty-Four.
  • James Park (CCIE and Certified Cisco Instructor) for editing Chapters Sixteen, Seventeen and Twenty-Five.
  • Fred Ingham (CCIE and Certified Cisco Instructor) for editing Chapters Twenty-One as well as Chapters Twenty-Three through Twenty-Nine.
  • Summantra Roy (CCIE) for reviewing Chapter Twenty-One.
  • Guillermo The Marine!! Rastelli for providing graphics and logistics support.
All ARS Bridges, Routers and Switches for CCIEs students. ARS BRS students are the best and brightest students in the internetworking industry! Remember my students, "Can you spot the issue?"

Writing this book also required extensive support of friends and family. Special thanks goes out to my mother, my brothers and sisters, my dear friends Spottie, the Constable of France and the Schwarz Graf. Finally, I must thank my wife Lania and two daughters Andreina and Gabriela for their love and support during the long lonely months of writing this book.

For further information on topics covered in this book.
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  • Anonymous

    Posted June 3, 2000

    The CCIE LAB Bible !!!!!

    This book is hands down, without a doubt, the single best LAB preparation guide on the market today. The troubleshooting methods that are used in this book are unprecedented and the detailed examination of networking technologies are easy to follow yet very in-depth. In short, if you don't have this book as part of CCIE preperation library, you are not serious about passing the LAB.

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  • Anonymous

    Posted March 10, 2000

    Great Book

    I purchased this after much deliberation. I had several of the All-In-One CCIE books and this one sprawled out on a table. This book was my choice, and I was happy I chose it. This book is written very clear, and reads great. It covers almost all the essentials to pass the CCIE test. I was disappointed that it did not cover any material on H.323, SS7, etc... For the voice portion of the exam. I passed my CCIE written exam two days after reading this book. I had already read a lot of the Cisco Press titles that correspond to the recommended Cisco courses for taking the test. If you are getting pretty close to taking the written exam, this book is the perfect choice!

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