Top-Down Network Design (2nd
Edition) by Priscilla Oppenheimer
Comprehensive As Both A Reference And Working Guide
Learn classic top-down computer network design with the second edition
of the best-selling Cisco Press design book
Learn to use the top-down network design method to build resilient,
manageable networksGain an understanding of industry-standard design
models and practicesIncorporate new technologies into enterprise network
designs, including new coverage of VPNs, wireless networking, and IP
TelephonyThe mission of Top-Down Network Design, Second Edition, is to
teach a practical methodology for designing enterprise networks that are
reliable, secure, and manageable. Like the popular first edition, published
by Cisco Press in 1998, this book teaches a network design methodology
that is based on structured systems analysis techniques that revolutionized
software development projects back in the 1970s and 1980s, now updated
to reflect new priorities and technologies.

The book begins by describing the design methodology, as it has been
adapted to fit modern network design, with the topics being taught in the
order that design tasks should be accomplished. Case studies and
examples are included to help the reader understand how to successfully
complete a design project that fulfills a customers requirements. Changes
in the business world have resulted in technological adjustments to typical
enterprise networks. The author emphasizes design with the following four
business needs in mind that are top-priority requirements for network
designs: security, resilience, project prioritization based on business goals,
and support for mobile users.
1587051524x020204
Personal Review: Top-Down Network Design (2nd Edition) by
Priscilla Oppenheimer
Top-Down Network Design, Second Edition is both a new terrific book and
still a terrific book. The original took a systems approach to designing a
network which could provide the service the people paying for it expected,
partly by getting them to clarify their expectations and needs. The new
Second Edition does this, too, but it includes material relevant to the
networks being implemented today, and they are very different networks
than we saw even three or four years ago.
New technologies, such as VPNs, VoIP, IPv6 as well as v4, Gigabit
Ethernet and 10GigE, etc. are covered as part of a networking solution, not
just as cool and sexy technologies to be rolled out for that reason.
Likewise, new business emphases like reliability, redundancy, resiliency
(which are not the same thing), security, and even survivability are
addressed. Not all new technologies will help solve these problems, and,
more often than not, they aren't even necessary. Thoughtful planning is far
more important, and working with the network as it is now, toward what it is
desired to become, is how you can really solve these problems.
I think one of the greatest techniques you can learn from TDND, 2e is to
characterize the flows of traffic on the network. Priscilla Oppenheimer
gives several examples of developing such analyses in a variety of
situations - campus networks, WANs, a design testing scenario, and so
forth. The Appendix with workstation bootup traffic information is especially
helpful - the only thing I would have liked to see that I didn't was a little
more detail on the contents of the various packets involved, but it is an
Appendix, and using a sniffer will let you see them for yourself.
I have both the original and the new Second Edition - and getting the new
one is definitely worth it. Networking has changed, and this book will help
you handle the new material.

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