Book Description
Sidestep VoIP Catastrophe the Foolproof
Hacking Exposed Way
"This book illuminates how remote users can probe, sniff, and modify your phones, phone switches, and networks that offer VoIP services. Most importantly, the authors offer solutions to mitigate the risk of deploying VoIP technologies." --Ron Gula, CTO of Tenable Network Security
Block debilitating VoIP attacks by learning how to look at your network and devices through the eyes of the malicious intruder.
Hacking Exposed VoIP shows you, step-by-step, how online criminals perform reconnaissance, gain access, steal data, and penetrate vulnerable systems. All hardware-specific and network-centered security issues are covered alongside detailed countermeasures, in-depth examples, and hands-on implementation techniques. Inside, you'll learn how to defend against the latest DoS, man-in-the-middle, call flooding, eavesdropping, VoIP fuzzing, signaling and audio manipulation, Voice SPAM/SPIT, and voice phishing attacks.
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Find out how hackers footprint, scan, enumerate, and pilfer VoIP networks and hardware
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Fortify Cisco, Avaya, and Asterisk systems
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Prevent DNS poisoning, DHCP exhaustion, and ARP table manipulation
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Thwart number harvesting, call pattern tracking, and conversation eavesdropping
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Measure and maintain VoIP network quality of service and VoIP conversation quality
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Stop DoS and packet flood-based attacks from disrupting SIP proxies and phones
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Counter REGISTER hijacking, INVITE flooding, and BYE call teardown attacks
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Avoid insertion/mixing of malicious audio
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Learn about voice SPAM/SPIT and how to prevent it
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Defend against voice phishing and identity theft scams
Customer Reviews:
Invaluable VoIP Security Handbook.......2007-08-11
In this book David Endler and Mark Collier have pulled together a vast wealth of material about hacking VoIP networks at every possible level. More than this, they have also created new value in the form of software test tools, which they have published on an accompanying website. It really is a must-have reference book for anyone working in VoIP.
Chapter 1 talks about Google hacking, or in other words, using the Internet to find out things about a target network. They show that Google can be a crucial tool in finding out what type of hardware and software you use in your VoIP networks, and in some cases will give vital clues even about how to login to the management systems of your network from the Internet. If this doesn't scare the bejesus out of you, then proceed on to further chapters about more VoIP-specific issues.
Chapters 2 and 3 detail the kind of tools a hacker might use to scan your network and enumerate all the devices, i.e. build their own map of how your network is laid out, right down to the telephone numbers and MAC addresses of desktop phones. Chapter 4 talks about Denial-of-Service, and the kind of attack resources that hackers might use to cripple a telephony network.
Chapter 5 is on VoIP eavesdropping, talking about some existing tools that can be used for this (Oreka, Wireshark and the unpleasantly named vomit), and as in the earlier chapters, some suggestions on how to defend against such a type of threat. Chapter 6 goes further to explain how a VoIP man-in-the-middle attack might be mounted, giving the possibility not just to listen, but to modify, replace or remix the audio stream.
Chapters 7, 8, 9 talk about specific platform threats, namely to Cisco Unified CallManager, Avaya Communication Manager and the Asterisk PBX. The vendors have added their own comment to these chapters, at the request of the authors. Chapter 10 takes in Softphones, including Google Talk, Gizmo, Yahoo and of course the ever popular Skype.
Chapter 11 describes VoIP fuzzing, or in other words, testing protocol stacks for flaws, so this is useful for those developing VoIP systems and applications. Chapter 12 talks about disruption of networks using flooding techniques and chapter 13 talks about Signaling and Media Manipulation.
The final section of the book is entitled Social Threats, and talks about SPAM over Internet Telephony (SPIT) in Chapter 14, followed by Voice Phishing in Chapter 15. Neither of these threats are in frequent use yet, but their use is certain to increase in the future, so this is a good moment to get to grips with what this means.
This is a highly technical book, but for managers responsible for IT security but not immersed in the details I would say this: buy the book, and read the case studies. There are five sections to the book, and each starts with a short case study. Invest 20 minutes in reading these, and you will start to get an appreciation for how important VoIP Security will be in the future. Then pass the book on to your hands-on security guy and tell him to read it from cover to cover.
A great Hacking Exposed and VoIP security book.......2007-05-07
Hacking Exposed: VoIP (HE:V) is the sort of HE book I like. It's fashionable to think HE books are only suitable for script kiddies who run tools they don't understand against vulnerable services they don't recognize. I like HE books because the good ones explain a technology from a security standpoint, how to exploit it, and how to defend it. I thought HE:V did well in all three areas, even featuring original research and experiments to document and validate the authors' claims.
HE:V is a real eye-opener for those of us who don't perform VoIP pen testing or assessments. It's important to remember that the original HE books were written by Foundstone consultants who put their work experience in book form. HE books that continue this tradition tend to be successful, and HE:V is no exception. Good HE books also introduce a wide variety of tools and techniques to exploit weaknesses in targets, and HE:V also delivers in this respect. HE:V also extends attacks beyond what most people recognize. For example, everyone probably knows about low-level exploitation of VoIP traffic for call interception and manipulation. However, chapter 6 discusses application-level interception.
HE:V goes the extra mile by introducing tools written by the authors specifically to implement attacks. In at least one case the authors also provide a packet capture (for the Skinny protocol) which I particularly appreciate. HE:V also looks ahead to attacks that are appearing but not yet prevalent, like telephony spam and voice phishing. Taken together, all of these features result in a great book. You should already be familiar with the common enumeration and exploitation methods found in HE 5th Ed, because the HE:V authors wisely avoid repeating material in other books (thank you).
If you want to understand VoIP, how to attack it, and how to defend it, I highly recommend reading HE:V. The book is clear, thorough, and written by experts.
Book Description
Learn how to manage and deploy the latest IP services in Cisco-centric networks.
- Understand VPN security concepts: confidentiality, integrity, origin authentication, non-repudiation, anti-replay, perfect forward secrecy
- Deploy quality of service technologies to protect your mission-critical applications
- Find out how IPsec technology works and how to configure it in IOS
- Learn how to set up a router as a firewall and intrusion detection system
- Gain efficient use of your IP address space with NAT, VLSM, IP unnumbered
- Solve real-world routing problems with redistribution, route filtering, summarization, policy routing
- Enable authentication, authorization, and accounting (AAA) security services wih RADIUS and TACACS+ servers
Enhanced IP Services for Cisco Networks is a guide to the new enabling and advanced IOS services that build more scalable, intelligent, and secure networks. You will learn the technical details necessary to deploy quality of service and VPN technologies, as well as improved security and advanced routing features. These services will allow you to securely extend the network to new frontiers, protect your network from attacks, and enhance network transport with application-level prioritization.
This book offers a practical guide to implementing IPsec, the IOS Firewall, and IOS Intrusion Detection System. Also included are advanced routing principles and quality of service features that focus on improving the capability of your network. A good briefing on cryptography fully explains the science that makes VPNs possible. Rather than being another routing book, this is a guide to improving your network's capabilities by understanding and using the sophisticated features available to you in Cisco's IOS software
Customer Reviews:
not a pratical resource.......2007-04-21
I bought this book after seeing all positive feedbacks. However, I must disagree on it. First it's not a pratical resource, at least to me. QoS, Security are evolving subjects, esp in Cisco's arena. This book has been out of dated without getting newer editions out. Second, most subjects are just lack of depth. Perhaps because of the size of book. There are excellent books from CiscoPress in each particular subject this book tries to explore.
A great book for it's size.......2006-01-31
When picking up this book, you may wonder how such a small CiscoPress can be of any value. Compared to other CiscoPress books about IP Services (QoS by Odom or Net Security Principals by Malik), Donald Lee does an excellent job at cramming a lot of little nuggets in this book. The discussion on RSVP is probably the best I've read, with good documentation of CAR, RED and CBWFQ. The book should be used as an intro to most QoS services. The author also does an excellent job at showing the differences between Priority, Custom, and WFQ Queuing.
I give this book 5 pings out of 5:
!!!!!
Wow! It's all so clear now!.......2004-04-15
I've had this book for a while and bought it because I wanted to know more about VPNs and also due to good reviews. Anyway, the VLSM part is truly outstanding. So is the IPSec section. Then, I started working with PIX for a while so this book was gathering dust until this week when I had to setup a new IOS router for the first time. Since I had never worked with IOS, I reviewed the sections that I had skipped before and they are just as great. CBAC (IOS FW) is clearly explained and shows best practice access-lists, etc. I am also glad to have discovered Annex E (IOS crash course). This author really knows how to convey a somewhat complicated (well, not anymore) subject in such simple and logical manner. Thanks Mr Lee.
IP++ : Beyond Routing!.......2003-04-09
Great book that presents the material in a very structured manner
and in a way that is easy to understand. For those of you who are
looking for a good starting point on Quality of Service, IPsec
and other services, this book is for you. Beginners should have a
firm grasp of IP routing before moving on to this book. Although
this book is a relatively fast read compared to other Cisco Press
books, it's full of great information. Must have for your Cisco
library!
Incredible balance of info and easy to read.......2002-06-20
I read a ton of tech books. This book is an easy read that is not to long on any subject but detailed enough to help you through the basics of any of the included topics. I love the section on ipsec, its killer.
Book Description
The complete resource for understanding and deploying IP quality of service for Cisco networks
Learn to deliver and deploy IP QoS and MPLS-based traffic engineering by understanding:
- QoS fundamentals and the need for IP QoS
- The Differentiated Services QoS architecture and its enabling QoS functionality
- The Integrated Services QoS model and its enabling QoS functions
- ATM, Frame Relay, and IEEE 802.1p/802.1Q QoS technologies and how they work with IP QoS
- MPLS and MPLS VPN QoS and how they work with IP QoS
- MPLS traffic engineering
- Routing policies, general IP QoS functions, and other miscellaneous QoS information
Quality-of-service (QoS) technologies provide networks with greater reliability in delivering applications, as well as control over access, delay, loss, content quality, and bandwidth. IP QoS functions are crucial in today's scalable IP networks. These networks are designed to deliver reliable and differentiated Internet services by enabling network operators to control network resources and use. Network planners, designers, and engineers need a thorough understanding of QoS concepts and features to enable their networks to run at maximum efficiency and to deliver the new generation of time-critical multimedia and voice applications.
IP Quality of Service serves as an essential resource and design guide for anyone planning to deploy QoS services in Cisco networks. Author Srinivas Vegesna provides complete coverage of Cisco IP QoS features and functions, including case studies and configuration examples. The emphasis is on real-world application-going beyond conceptual explanations to teach actual deployment.
IP Quality of Service is written for internetworking professionals who are responsible for designing and maintaining IP services for corporate intranets and for service provider network infrastructures. If you are a network engineer, architect, manager, planner, or operator who has a rudimentary knowledge of QoS technologies, this book will provide you with practical insights on what you need to consider when designing and implementing various degrees of QoS in the network. Because incorporating some measure of QoS is an integral part of any network design process, IP Quality of Service applies to all IP networks-corporate intranets, service provider networks, and the Internet.
Customer Reviews:
This is the Good Stuff........2006-12-20
This is a fabulous book if you want to know how the Qos mechanisms work. This guy is a degreed engineer, not somebody who has a B.S. in B.S. and is in a job called "engineer". And his book reflects that.
That said, there are a few points to be made. This isn't a configuration book...it's a "nuts and bolts" book. Try the W. Odom book for configuration. Also, this book is rapidly becoming outdated. Policing explains CAR, but CAR is outdated in favor of Class Based Policing, which doesn't work the same way as CAR at all!
Get the Odom book first. If you're still curious about the nuts and bolts, buy this one.
Surprised with the bad comments.......2004-01-09
After reading the book and reading the comments of the reviewers, I am surprised that there are so many negative comments on the book. Personally, I find the book extremely useful in understanding the QoS implemenation of Cisco box. A lot of the algorithm and implementation details of the QoS functions inside a Cisco router is reviewd here in the book and although the Cisco web site may provide you a lot more information on how to configure the router, most documents does not tell you the inside story on how the mechanisms work like what this book does.....my 2 cents.
Where's the Beef?.......2003-03-16
My first bad review for a Cisco Press book. They have to agree that this book should never have been printed with Cisco's name on it.
This book lacks information in so many ways. Read the section on CBWFQ and you get 1/3 of what you're looking for. I have to use Cisco's website for the rest. The FRTS section is lacking. These are just 2 examples in a book that is 1/3 the size it should be.
Don't buy this book. It's simply not worth the money. No hard feelings toward the author, but I did waste my money and I have to tell others not to. I'll look forward to the next release of this book which I'm sure will include much, much more.
A good start.......2002-10-17
For those who need a general overview of how QoS is implemented in Cisco devices and software, this book would serve as a pretty good introduction. Some of the discussion is generic enough to be useful to those who are interested in QoS, but not necessarily implemented in a Cisco environment. Naturally then the reader is assumed to have a good background in Cisco network architectures. The author implements case studies in the book, with it being assumed that the reader is also comfortable with the actual administration of Cisco network devices. Therefore the book is really useful for those readers who are involved in the practical implementation of QoS schemes. Those interested in developing new approaches to QoS may still find the book helpful as an introduction to what is known. There are more specialized treatments that can be found online if one is willing to spend the time finding and downloading the documents (from the Cisco website). I only read the first six chapters of the book, which deal with IP QoS, and so my review will be restricted to these.
Remembering that the Internet is a best-effort service only, the author introduces the IP QoS functions in chapter 1. The advent of voice and video traffic over IP for example, requires the need for QoS in modern networks. QoS services are divided into levels: best-effort, which does not guarantee traffic delivery; differentiated service, which groups traffic into classes but does not guarantee its delivery; and guaranteed service, which allocates network resources to ensure specific service requirements. Bandwidth, packet latency, and packet loss are measures used to characterize connection performance.
Chapter 2 gives a more detailed overview of the differentiated services architecture for delivering QoS on the Internet. Called `diffserv' by the IETF, the author discusses the historical origins of it, and how it provides traffic differentiation by breaking traffic up into a small number of classes, with relative service priority existing among these classes. The presentation is straightforward to follow, once one gets used to remembering all of the many acronyms that are employed, such as PHB (per-hop behavior), DSCP (Differentiated Services Code Point), etc. The traffic conditioners, which are QoS functions that set the DSCP field and monitor traffic for profile compliance, and discussed in detail. Network provisioning, signaled QoS, and QoS policy manager are all discussed as resource provisioning policies.
In chapter 3, the author overviews the use of traffic conditioning functions at the network boundary as a tool for providing differentiated services. In one, called `packet classification', the packets are identified using one or more fields in a packet. This could be the MAC address, URL, IP Precedence, etc. Then `packet marking' is used to mark classified packets according to their traffic class. Traffic rate management, another conditioning function, is discussed via the token bucket scheme, along with the CAR traffic policing function. The strategy of borrowing of tokens for token buckets with extended burst capability is very interesting and is a good candidate for improvement using techniques and concepts from financial engineering and artificial intelligence. The token bucket scheme is also discussed in the context of traffic shaping.
In the next chapter on resource allocation, the author discusses how weighted fair queuing can be employed as a scheduling discipline in which flow differentiation occurs. The author makes some interesting and somewhat controversial remarks in this chapter, one being that after stating that some flows are delayed to offer a particular bandwidth to other flows, he concludes to the effect that a preferential treatment will result in another suffering. This is not really true as one can show using techniques from game theory. In fact, the max-min fair-share allocation scheme that he discusses next is a step in this direction. This is true also for the weighted max-min fair share allocation, in which each user is assigned a weight, with the fair-share being proportional to this weight. Generalized processing sharing (GPS) is discussed as an ideal scheduling mechanism that services an infinitesimally small amount of data from each nonempty queue via round-robin. This unrealistic requirement is then ameliorated by using fair queuing, a strategy that takes all flows to have the same weight, and simulates GPS by computing a sequence number for each arriving packet. Flow-based weighted fair queuing is also discussed in detail in this chapter. For those readers worrying about QoS for interactive voice traffic, the author is careful to point out that WFQ maybe unable to achieve the low-jitter requirements. Therefore, he includes a discussion of WFQ with priority queue in this chapter. A short overview of flow-based distributed WFQ is also included. The latter does not make use of the CPU, unlike ordinary WFQ. The author then outlines the class-based WFQ, which can be implemented in both distributed and nondistributed modes. Priority queuing, which divides queues into subqueues of decreasing order of priority, is also treated. The author also gives an overview of custom queuing, which is a strategy for guaranteeing a minimum bandwidth for each traffic classification.
Chapter 5 is an overview of the scheduling algorithms on routers that employ a switching architecture that is not bus-based. In this regard, the author gives a very detailed discussion of the use of Modified Weighted Round Robin and Modified Deficit Round Robin algorithms.
The TCP congestion control mechanism and how it deals with packet drops is the topic of chapter 6. Those who are familiar with TCP/IP will find the reading very straightforward, but the author also introduces Weighted Random Early Detection (WRED) and Flow WRED, which permit different RED parameters based on packet precedence, and a scheme for penalizing flows that attempt to utilize more than their allocated queue lengths. The author also discusses Selective Packet Discard (SPD), which assists in the differentiation of `priority' traffic from `normal' traffic. An interesting case study in how to prevent `smurf attacks' by using SPD is included in this chapter.
Good, but not much more than IOS Manuals.......2001-07-18
I found the text in this book to be well presented, however, it seemed like a repeat of the excellent IOS 12.1 "Cisco IOS QOS Config Guide".
I was hoping that the book would provide either more detail about how these functions work, or would provide some best practicies for how to apply these commands.
If this is your only reference for QOS, this might be a good start. But if you already have the IOS manuals (printed or electronic) I wouldn't count on this book to be a resource for additional information.
Book Description
QoS, short for quality of service, is one of the most important goals a network designer or administrator will have. Ensuring that the network runs at optimal precision with data remaining accurate, traveling fast, and to the correct user are the main objectives of QoS. The various media that fly across the network including voice, video, and data have different idiosyncrasies that try the dimensions of the network. This malleable network architecture poses an always moving potential problem for the network professional.
The authors have provided a comprehensive treatise on this subject. They have included topics such as traffic engineering, capacity planning, and admission control. This book provides real world case studies of QoS in multiservice networks. These case studies remove the mystery behind QoS by illustrating the how, what, and why of implementing QoS within networks. Readers will be able to learn from the successes and failures of these actual working designs and configurations.
*Helps readers understand concepts of IP QoS by presenting clear descriptions of QoS components, architectures, and protocols
*Directs readers in the design and deployment of IP QoS networks through fully explained examples of actual working designs
*Contains real life case studies which focus on implementation
Customer Reviews:
A bible for all Service Provider IP engineers.......2007-05-30
This is an excellent reference book. This book is now the key reference I use for all work I do across the Middle East and Africa in designing next generation IP networks. IP QoS, MPLS TE and Capacity planning are often confused and their interaction misunderstood. This book clearly explains and simplifies all these topics. I have bought copies for all the lead designers I work with as it has simplified our lives immensly. I recommed it to all IP engineers.
Book Description
Quality of Service is a fast growing area of technology, being driven by the growth of real-time applications such as voice over IP. This book is perfect for you, technical professionals who are looking for information building blocks of Quality of Service and who want to grasp critical concepts such as the DiffServ and IntServ models and the use of MPLS to support the next generation of VPNs. If you are a Network architect, network engineer, or network designer, you will be using the authoritative guide to understand the different emerging technologies that can be used to archive Quality of Service, and to decide how to incorporate them into your networks and meet the needs of your particular network environment. Quality of Service in IP Networks presents a great deal of technical detail, as well as provides a clear understanding of the architectural issues surrounding delivering QoS in an IP network, and its positions in the emerging technologies within a framework of solutions.
Customer Reviews:
luke warm.........2000-10-03
If you like it hot then this book aint for you. Primarily, it is Armitage's writing style which is a little turn off. If you have read other research papers by Armitage then you'd know what I'm talking about. I had to read a lot of those during my thesis work.
Another reason for being luke warm is that QoS is a little vague topic to write about. Comparable works that I've read are: 'Quality of Service' by Ferguson and 'Supporting Service level agreements in IP networks' by Verma.
This book touches upon a lot of different current topics in networking such as DiffServ, Inteserv, MPLS etc without going into too much detail.
Unless you have practically worked on either developing or configuring QoS in routers, you'd have a hard time grasping some of the concepts because they might seem little too abstract at times. If you understand link coloring, CoS, constraint based routing and how routers (such as Juniper) actually implement it, then this book will make more sense.
Great book about QoS - and more!.......2000-05-08
This book is remarkable. It manages to provide a thorough up-to-date coverage of everything you always wanted to know about QoS but were even more afraid to ask than about the original 3-letter thing. Not only it educates in the current state of the QoS affairs, but also I think I learned enough to follow on with evolving technologies and approaches. Then of course, you cannot really talk about QoS without referring to all major Internet/TCP/IP mechanisms. So as an added bonus, the book provides lots of concise but comprehensive refreshers on IP addressing, router architecture, LAN technologies, end user applications, etc. The book is easy to read. It makes a good weekend reading that allows you to update your resume on Monday with "QoS expert".
Average customer rating:
- Great book to understand ALL Cisco QoS implementations
- And the Award for Best of Cert Books goes to....
- Great book
- Cisco Creates another great Reference
- Great resource before and after the exam!!!!!!
|
Cisco DQOS Exam Certification Guide (IP Telephony Self-Study)
Wendell Odom , and
Michael Cavanaugh
Manufacturer: Cisco Press
ProductGroup: Book
Binding: Hardcover
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Similar Items:
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Developing IP Multicast Networks: The Definitive Guide to Designing and Deploying CISCO IP Multi- cast Networks
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Cisco QOS Exam Certification Guide (IP Telephony Self-Study) (2nd Edition) (Exam Certification Guide)
ASIN: 1587200589 |
Book Description
The official self-study test preparation guide for the Cisco DQOS 9E0-601 and QOS 642-641 exams
This official study guide helps you master all the topics on the DQOS exam, including:
- QoS concepts, tools, and architectures
- Classification and marking concepts and tools
- Queuing in Cisco routers and configuration of queuing tools
- Traffic policing and shaping in Cisco routers
- Configuration of congestion avoidance tools
- Configuration of link-efficiency tools
- Call admission control (CAC) tools for voice and video connections
- Cisco QoS management tools
- QoS design processes
- QoS on LAN switches
The Cisco IP Telephony Support, Design, and Operations Specialist focused certifications validate proficiency in designing, installing, and supporting a multiservice network solution. A solid understanding of quality-of-service (QoS) features and implementation is essential for all of the Cisco IP Telephony focused certifications and is also a core component of the CCIP(tm) certification.
Cisco DQOS Exam Certification Guide is a best-of-breed Cisco(r) exam study guide that focuses specifically on the objectives for the DQOS exam. Senior instructor and best-selling author Wendell Odom and senior Cisco AVVID consultant Michael Cavanaugh share preparation hints and test-taking tips, helping you identify areas of weakness and improve your QoS knowledge. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.
Cisco DQOS Exam Certification Guide presents you with an organized test preparation routine through the use of proven series elements and techniques. "Do I Know This Already?" quizzes open each chapter and allow you to decide how much time you need to spend on each section. Exam topic lists and Foundation Summary tables make referencing easy and give you a quick refresher whenever you need it. Challenging chapter-ending review questions help you assess your knowledge and reinforce key concepts. The companion CD-ROM contains a powerful testing engine that allows you to focus on individual topic areas or take complete, timed exams that help you prepare for the QoS component of either the IP Telephony or CCIP certifications. The assessment engine also tracks your performance and provides feedback on a module-by-module basis, presenting question-by-question remediation to the text. Well-regarded for its level of detail, assessment features, and challenging review questions and exercises, this book helps you master the concepts and techniques that will enable you to succeed on the exam the first time.
Cisco DQOS Exam Certification Guide is part of a recommended study program from Cisco Systems(r) that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining.
Companion CD-ROM
The companion CD-ROM contains a test bank with over 200 practice questions and an electronic version of the text.
This volume is part of the Exam Certification Guide Series from Cisco Press(r). Books in this series provide officially developed exam preparation materials that offer assessment, review, and practice to help Cisco Career Certification candidates identify weaknesses, concentrate their study efforts, and enhance their confidence as exam day nears.
Customer Reviews:
Great book to understand ALL Cisco QoS implementations.......2006-02-02
CiscoPress's "Cisco DQOS Exam Certification Guide" by Odom is a best-of-class book. The book is not for the meek - weighing in at over 850 pages, the book is a sizable investment of time and energy to properly appreciate. While the book was mainly written to be utilized for a few QoS exams, I'd expect to see this book on the bookshelf of many CCIEs or CCIE wannabes (including myself).
The beauty of this book is that it covers QoS in a depth that is not equaled elsewhere. For example, the book's first chapter, simply an overview of QoS, is almost 80 pages (some overview)! The first chapter succinctly describes the differences and nuances of the enemies of QoS - delay, jitter, bandwidth and packet loss. The second and third chapters do a great justice at trying to explain the dizzying array of tools available to adjust QoS - the different classes of tools and the differences between classification and marking. And so forth..., each chapter does a great job at explaining the mysteries of QoS.
Of course, with any book of such complexity, typos must be expected. Two typos that I noticed are:
-on page 333, I believe the correct Bc should be 93.75ms.
-on page 456, FRED can match on layer 4, not layer 3 protocols
If I had a `Top 10' for books that I feel would be necessary for the CCIE, I would place this book on the list. I have not been able to find the same explanations for QoS on Cisco's website or in other networking books.
I give this book 5 pings out of 5:
!!!!!
And the Award for Best of Cert Books goes to...........2004-11-01
The team of Cavanaugh & Odom have hit a homerun here. This book has everything; Sex, Politics, Intrigue, Suspense, Greed, Betrayal and Redemption. Well, okay, it has none of that. But, it does have everything that the Experienced Networker could want to know about Quality of Service, and it's role and implementation within today's rapidly converging internetnetworks. The authors have proven to be knowledgeable, insightful and easy to understand. And, while this book may seem "overly long" to many, it strives to give fairly complete coverage of this important matter regarding today's internetworking environment. This is a very important point when your seeking to spend some "quality time" with a Cisco certification exam (not mention some quality cash on an exam).
Cavanaugh & Odom have moved beyond the normal course of just re-editing Cisco TAC web content for bound, portable consumption that is the hallmark of many of Cisco Press' previous publications. While the layout will be familiar to previous C.P. readers, the actual format and content presentation is fresh. Each chapter's order and flow strongly adheres to the tried and true, but Illustrations, Diagrams, Scenarios and Examples are not just simply reprinted fare from Cisco's website. Each chapter's content is easily on par with all other Authors/Publishers that are typically quoted as being "easier to digest and understand". Even the book's index is surprisingly extensive and comprehensive, and misses very few important items. When the working examples actually are repackaged from Cisco's web content, the explanations and follow-throughs are incisive and accurate. Knowledge and understanding can be gained from every page without overkill or excessive repetition.
Any exam candidate seeking an in-depth review and preparation for the Cisco QOS or DQOS exams will find this book a treasure trove chocked full of the expected scenerios, examples and practice questions. All networking professionals should strongly consider stocking this in their personal reference collection for handy lookups to otherwise difficult QOS problems. However, I caution one, if you're seeking a quick and simple introduction to QOS, or looking to "break into" or "get their foot in the door" of internetworking, you should go elsewhere. This is definitely not the kiddy end of the pool. But then again, it certainly won't require the deep sea background of a CCIE either. This manual may start with the foundations of QOS but it very quickly ramps up to a professional-level internetworking reference. This is a book that goes beyond the classroom and heads straight for the real world.
As my industry and workplace move further towards voice and data "Convergence", this book has quickly become my working cookbook for smoothing out tough QOS implementation questions. And, It shall remain an important part of my desktop reference library for a long time to come.
Great book.......2004-05-07
It seems that everybody likes this book so I won't waste your time writing another long review.
This book is by far the best Cisco book I've read, and I've read a few. It's full of detail and a very very good starting point for QOS.
Cisco Creates another great Reference.......2003-12-26
I recently read the book titled "Cisco DQOS Exam Certification Guide" by Wendell Odom, ISBN: 1587200589.
This book takes the user through the topic of Deploying Quality of Service in Cisco networks to a new level of knowledge. QoS has become one of the hottest if not the hottest topic in enterprise and medium size business networks. The ability to control traffic based on its priority and the ability to prioritize the traffic based on any number of criteria has become a required skill in today's marketplace. To Quote from Cisco's Web Site "Quality of Service (QoS) is an essential element to building a flexible, accessible, and efficient network. Its role in multiple technologies underlines the need for most networking professionals to master the features that implement QoS" The advent of Cisco's AVVID network and the proliferation of IP telephone services and applications along with the advancement in Video Conferencing and Group Collaboration software have created an unprecedented need for Quality of Service implementation. This book is filled with examples and thorough explanations of many complicated and essential configurations. The authors display a thorough knowledge of this sometimes difficult and always challenging subject. There are numerous charts and graphs to help aid in understanding the concepts presented. This book takes the reader step by step through configuration of all of the commonly use techniques and gives the user a good understanding of not only how to enter the commands but also what the commands do and how they interact. The topics covered in this book will give a CCIE R/S candidate essentially all of the skills needed for the QoS portions of the CCIE Practical Exam. The book covers all of the currently available traffic prioritization and queuing methods in a high degree of detail. It is, I think, geared towards an audience of knowledgeable professionals who already have some knowledge in the area of QoS. The book provides a reader with the tools necessary to implement virtually any needed QoS features in his/her own network. I would rate it as a MUST HAVE reference for anyone who might be required to implement QoS in a Cisco environment. This is a winner for Cisco Press. It proves once again the commitment to excellence of Cisco Press and delivers a book that is very useful to anyone involved in the implementation of the topic it covers. The authors have taken a difficult subject and broken it down into manageable chunks. At the end of the day the user will have a good understanding of the broad topic of QoS and have the tools necessary to implement it in a Cisco environment.
Great resource before and after the exam!!!!!!.......2003-12-16
Let me just start off by saying that I wish I had Wendell Odom's Cisco DQoS Exam Certification Guide a few months ago when I was studying for this exam. I had looked at a number of other Cisco Press and non-Cisco Press books and could not find one that adequately covered the topics in the exam. This one covers all of them and more.
The book starts off by listing all the exam topics that will be covered in both DQoS 9E0-601 and QOS 642-641 exams and then explains how to interpret those often nebulous expectations. Do not get me wrong. It does not give you a blow by blow of what is on the exam but rather informs you of how test makers come up with course objectives and a method to use in studying. I found this very helpful. In fact, I wish someone had taught me that as a freshman in college.
If you are familiar with Cisco Press Exam Certification Guides you will not be disappointed in the familiar format. Each chapter starts with an overview and "Do I Know This Already?" quiz. I always find these helpful in determining my level of knowledge on a particular subject and those areas I need to study.
It then proceeds to the meat of each chapter. They are filled with many useful diagrams and tables that do a wonderful job complimenting and expanding Odom's covering of each chapter. There are plenty of switch and router configurations that also provide help in giving real life examples of how QoS is implemented.
Each chapter then wraps up with an excellent Foundation Summary and Q&A section. Answers to the questions are found in an appendix in the back of the book.
In general I found all of the topics covered as well, if not better, than the DQoS class I took to study and pass the test. In particular I found the first two chapters great in providing a great overview of QoS, its architectures and tools. I have used Odom's example of bank teller lines, with a number of customers, to provide a way of explaining the difficult topic of QoS and it quickly resonates with them.
I also found the last two chapters on QoS Design and LAN QoS very useful. The LAN QoS chapter provides information on the 3550s and latest Modules/Supervisor Engine cards for the Catalyst 6500 and 4500/4000. I have already used this information as a resource on a project. The design chapter has also been useful in helping me "flesh out" customer's goals and providing design recommendations based upon those goals.
In conclusion, I always feel that for a study guide to truly be useful, it must have some use after the exam. Wendell Odom's Cisco DQoS Exam Certification Guide certainly does that well. It will not only be sufficient in providing you the information that you need to study for and pass the test, but it will certainly be useful as a quick reference guide on many of the topics covered. I plan on having it with me from the project planning stages to the optimizing and troubleshooting stages (although if your good and follow his teachings on the former you probably will not have much of the latter). Thanks Wendell for another well written and useful book.
Book Description
This book constitutes the thoroughly refereed postproceedings of the International Workshop on Architectures for Quality of Service in the Internet, Art-QoS 2003, held in Warsaw, Poland, in March 2003.
The 22 revised full papers presented were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on architectures for next generation networks, architectures and services, signalling, admission control, AQUILA-resource control, AQUILA-QoS at work, MPLS traffic engineering, and traffic control mechanisms.
Book Description
Word count: 676.
Average customer rating:
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Carrier class quality for IP-based networks.: An article from: Rural Telecommunications
Russ Sharer
Manufacturer: Thomson Gale
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ASIN: B000RP87OY
Release Date: 2007-06-07 |
Book Description
This digital document is an article from Rural Telecommunications, published by Thomson Gale on May 1, 2007. The length of the article is 1693 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
Citation Details
Title: Carrier class quality for IP-based networks.
Author: Russ Sharer
Publication:
Rural Telecommunications (Magazine/Journal)
Date: May 1, 2007
Publisher: Thomson Gale
Volume: 26
Issue: 3
Page: 28(5)
Distributed by Thomson Gale
Book Description
This digital document is an article from Tele-Service News, published by Worldwide Videotex on October 1, 2000. The length of the article is 1158 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
Citation Details
Title: CENTRECOM/ERICSSON TO PROVIDE HIGH-QUALITY IP TELEPHONY.(Company Business and Marketing)
Publication:
Tele-Service News (Newsletter)
Date: October 1, 2000
Publisher: Worldwide Videotex
Volume: 12
Issue: 10
Page: NA
Distributed by Thomson Gale
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