Glen Kramer

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Copyright 2005 by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the publisher.

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ISBN 0-07-144562-5

The sponsoring editor for this book was Stephen S. Chapman, the editing supervisor was David E. Fogarty, and the production supervisor was Pamela A. Pelton. It was set in Century Schoolbook by Digital Publishing Solutions. The art director for the cover was Anthony Landi.

This book was printed on recycled, acid-free paper containing a minimum of 50% recycled, de-inked fiber.

Figures 7.3, 8.10, 8.12, 8.14-8.18, 8.20, 8.21, and 8.23-8.27 are reprinted with permission from IEEE Standard 802.3ah(TM)-2004, Information Technology Telecommunications and Information Exchange between Systems Local and Metropolitan Area Networks, Copyright 2004, by IEEE. The IEEE disclaims any responsibility or liability resulting from the placement and use in the described manner.

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