Showing posts with label cisco. Show all posts
Showing posts with label cisco. Show all posts

Computer Networks: A Systems Approach, Fourth Edition (The Morgan Kaufmann Series in Networking) Review

Computer Networks: A Systems Approach, Fourth Edition (The Morgan Kaufmann Series in Networking)
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Computer Networks: A Systems Approach, Fourth Edition (The Morgan Kaufmann Series in Networking) ReviewThis review compares the following four books:
Computer Networks by Peterson and Davie (P & D)
Computer Networks by Tanenbaum
Computer Networks by Comer / Internetworking with TCP/IP
Computer Networking by Kurose and Ross (K & R)
By far the best book in the list is "Computer Networking" by Kurose and Ross. This book covers all of the essential material that is in the other books but manages to do so in a relevant and entertaining way. This book is very up to date as seen by the release of the 5th Ed when the 4th Ed is barely two years old. There are lots of practical exercises using wireshark and the companion website is actually useful and relevant. The attitude of this book with regard to teaching networking concepts could be summed up as "try it out and see for yourself". One interesting thing to note is that the socket programming example are all in Java.
Next up is the Peterson and Davie book which covers everything that Kurose and Ross discuss but is slightly more mathematical in how it goes about things. There are a lot more numerical examples and defining of formulas in this book which is fine by me and in no way detracts from the book. Also the socket programming examples are in C which is a little more traditional. The points where this text loses ground to K & R is that it doesn't have the practical application exercises that K & R has and it also doesn't extend the basic networking theory that is covered to modern protocols like K & R.
The two Comer books come next. Comer's "Computer Networks" book is probably the most introductory book out of this whole list and is more of a survey of networking topics that doesn't cover anything in any real depth. Still, this is an excellent book in that it is a quick clear read that is very lucid in its explanations and you can't help feeling that you understand everything that is covered in the book. Comer's TCP/IP book is the equivalent of the other authors' computer network books and in that respect it is pretty average. It covers all of the relevant material and in a manner which is more than readable but that is all. There is nothing exceptional about the book which stands out from the rest.
Last comes Tanenbaum's book from the author who is probably most famous for his OS books. This is probably the most technical and detailed of the books with lots of sample C code belying is experience with operating systems and their network stack code. The weak point of this book is that all of the code and technical minutia might prevent the reader from seeing the forest for the trees. Unless you are trying to learn how to program your own network stack for a Unix/Linux system, then I would get either the K & R book or the P & D book to learn networking for the first time. This book would best be served as a reference in which case the technical nature of the book becomes a benefit rather than detracting from the text.Computer Networks: A Systems Approach, Fourth Edition (The Morgan Kaufmann Series in Networking) Overview

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Cisco Router Configuration Handbook (2nd Edition) (Networking Technology) Review

Cisco Router Configuration Handbook (2nd Edition) (Networking Technology)
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Cisco Router Configuration Handbook (2nd Edition) (Networking Technology) ReviewI bought this book with the hopes that it would cover the latest versions of Cisco IOS and the latest generation of the ISR / ISRG2 routers (2900 and 3900).
Well, I can't say how disappointed I am in my initial review of the book. I am a voice engineer and the UC section and the initial hardware overview section have not been updated which makes me concerned to rely on other sections of the book since I have to assume other sections haven't been updated since the first edition as well.
The initial hardware chapter still references hardware file system limitations for the 1003,1004,1005,1600,1700,2500,2600,3600,4000,as5200, and mc3810. It doesn't even make a mention of ISR 2800/3800/2900/3900 routers. There are many changes with the latest generation ISRG2's such as license enforcement and these topics are not covered.
In addition to the hardware overview, the book covers the Service Assurance Agent (SAA) which was renamed to IP SLA quite a while ago.
Buffer / Memory management sections also cover old router models and don't make mention of the newer routers.
==Voice / Unified Communications Chapter==
This chapter does have a note that indicates the section covers configuration for the newer 2800/2900/3800 but in my opinion does not appear to contain many recent additions.
It mentions G711/G729 without even listing the newer codecs such as G722 and ilbc. The DSP configuration section has not been updated for ISRs or ISRG2s. It lists older models by name. ISR and ISR G2 DSP architecture is significantly different from the older routers and this section does not have any information on the current shipping router models. SAA is also mentioned here as well and the configuration tasks listed are not relevant to the new IP SLA configuration.
In summary, there is ALOT of information covered in this book including a lengthy section on IPv6. However, it is a "configuration handbook" not a theory book, and in many cases the book has not been updated to reflect the recent changes within Cisco router hardware or software development.
This book will be useful for someone new to Cisco routers or someone who is dabbling in areas outside of their expertise. However for someone experienced in Cisco IOS it may contain too much outdated information to be useful or relevant to the current technologies in the latest 12.4T or 15.x IOS trains.
Cisco Router Configuration Handbook (2nd Edition) (Networking Technology) Overview

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