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 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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