IP Addressing Fundamentals

448 Pages·2003·3.89 MB·English

by  Sportack

IP Addressing Fundamentals
By Mark A. Sportack
...............................................
Publisher: Cisco Press
Pub Date: October 31, 2002
ISBN: 1-58705-067-6
Pages: 368

Table of Contents | Index
The reader-friendly explanation of how the IP address space works and how it is used
A reader-friendly introduction to the complex and confusing topic of IP addressing
Thorough and understandable explanations of the binary mathematics behind IP addressing
Complete coverage of the IPv4 address space without distractions of routing or transport
protocols
Detailed explanations of subnetting and supernetting, Variable Length Subnet Masks (VLSMs),
CIDR, NAT, portable address spaces, and IPv6
Strategies for managing an address space for enterprise WANs, data centers, and ISPs
Numerous examples and an easy-to-read style of writing that imparts a profound understanding
of IP addressing

The Internet Protocol (IP) is the native protocol suite of the Internet and has become predominant in
virtually all networks and internetworks. Managing an IP address space requires a solid command of
binary mathematics, particularly as it is applied within the IP addressing architecture. The mathematics
of the IP address space, however, are not intuitive and can be very difficult to grasp. Consequently,
learning about IP addressing can be a lot like trying to piece together a jigsaw puzzle-but without
knowing what the puzzle is supposed to look like.
IP Addressing Fundamentals explains simply and clearly how the IP address space works and how it is
used. This is a reader-friendly book that details the fundamentals of the IP address space from the
ground up. IP Addressing Fundamentals unravels the mysteries of subnetting, supernetting, and CIDR;
thoroughly explains the binary mathematics of IPv4's addressing space; and demonstrates how an IP
address becomes an active component in both networks and internetworks. Author Mark Sportack
prepares you for real-world success by walking you through some of the issues and traps that lie in wait
for anyone who needs to plan or manage the use of an IP address space. Most importantly, this book
doesn't presume you already know what the entire IP addressing puzzle looks like.
IP Addressing Fundamentals imparts a profound command of IP addressing through a clear and
concise writing style. Basics are reinforced with detailed information and numerous examples of how the
concepts work. This book builds upon concepts presented in earlier chapters and concludes with fairly
advanced topics that will become increasingly useful to midlevel network engineers.
After reading IP Addressing Fundamentals, you'll finally understand IP addressing and appreciate both
its mechanics and relevance, and you'll know how to efficiently apply your new knowledge.
IP Addressing Fundamentals
By
Mark A. Sportack
...............................................
Publisher: Cisco Press
Pub Date: October 31, 2002
ISBN: 1-58705-067-6
Pages: 368

Table of Contents | Index
Copyright
About the Author
About the Technical Reviewers

Acknowledgments
Introduction
Icons Used in This Book

Command Syntax Conventions

Part I.

Introduction to IP Addressing

Chapter 1.

Developing the Internet's Technologies
The Internet's Caretakers
The Internet Standards Process

The Benefits of Openness

Summary

Chapter 2.

Classical IP: The Way It Was
Evolution of the Address Space

The Address Space Hierarchy

Summary

Chapter 3.

Fixed-Length Subnet Masks
Introduction to Subnetting

Forming Subnets from 24-Bit Network Addresses

Sources of Inefficiencies with FLSM

Summary

Chapter 4.

Variable-Length Subnet Masks
Variable-Length Subnetting in the RFCs

The Inefficiencies of FLSM

A Practical Application

Summary

Part II.
The Evolution of IPv4

Chapter 5.

The Date of Doom
Responding to the Crisis

Interim Solutions

Summary

Chapter 6.

Classless Interdomain Routing (CIDR)
CIDR: An Historic Review

Symmetry of CIDR Notation

Supernetting

Summary

Chapter 7.

Private Addresses and NAT
Private Address Spaces

NAT

Implementation Topologies

Problems with NAT

Summary

Part III.
Advanced IP Topics

Chapter 8.

Internet Names
Introduction to Internet Names

DNS: The Hierarchical Approach

Nonstandard Internet Names

Summary

Chapter 9.

IP Multicasting
The Concept of Multicasting

IPv4 Multicasting Mechanisms

Summary

Part IV.

Strategies for Network Stability, Scalability, and Performance

Chapter 10.

Networking with IP
Dissecting a Typical Communications Session

Domain Name System

Translating IP Addresses into MAC Addresses

Summary
Chapter 11.
Internetworking with IP
The Mechanics of Routing

Routing and the Internet

Summary

Chapter 12.

Network Stability
The Problem with "Open" Networking

RFC 2267, "Source Address Assurance"

Address Lending for Network Stability

Summary

Chapter 13.

Planning and Managing an Address Space
The Challenge of Managing an Address Space

Address Management Issues for an Enterprise WAN

ISP Address Management Issues

Address Management Issues for an Internet Hosting

Center
Summary

Chapter 14.

Address Management Tactics
The Challenge of Managing an Address Space
Sequential Assignment

Sequential Assignment with Gaps

Predefining with Symmetrical Gaps

Balkanizing an Address Space

Summary

Part V.

The Future of the Internet Protocol

Chapter 15.

IPv6: The Future of IP Addressing
The Need for More

Overview of IPv6

Address Types

More Migration Tools

What Are We Waiting For?

Summary

Index
Copyright
Copyright © 2003 Cisco Systems, Inc.
Cisco Press logo is a trademark of Cisco Systems, Inc.
Published by:
Cisco Press
201 West 103rd Street
Indianapolis, IN 46290 USA All rights reserved. No part of this book may be reproduced or transmitted
in any form or by any means, electronic or mechanical, including photocopying and recording, or by any
information storage and retrieval system, without written permission from the publisher, except for the
inclusion of brief quotations in a review.
Printed in the United States of America 1 2 3 4 5 6 7 8 9 0
First printing November 2002
Library of Congress Cataloging-in-Publication Number: 2001093680
Warning and Disclaimer
This book is designed to provide information about the fundamental concepts and technologies
associated with IP addressing. Every effort has been made to make this book as complete and accurate
as possible, but no warranty or fitness is implied.
The information is provided on an "as is" basis. The author, Cisco Press, and Cisco Systems, Inc. shall
have neither liability nor responsibility to any person or entity with respect to any loss or damages
arising from the information contained in this book or from the use of the discs or programs that may
accompany it.
The opinions expressed in this book belong to the author and are not necessarily those of Cisco
Systems, Inc.
Trademark Acknowledgments
All terms mentioned in this book that are known to be trademarks or service marks have been
appropriately capitalized. Cisco Press or Cisco Systems, Inc. cannot attest to the accuracy of this
information. Use of a term in this book should not be regarded as affecting the validity of any trademark
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Credits
We greatly appreciate your assistance.

Publisher John Wait
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