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Cisco Catalyst 4948 User Manual

Cisco Catalyst 4948
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Cisco LAN Switching Configuration Handbook
Steve McQuerry, David Jansen, David Hucaby
Copyright © 2009 Cisco Systems, Inc.
Published by:
Cisco Press
800 East 96th Street
Indianapolis, IN 46240 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, 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
First Printing June 2009
Library of Congress Cataloging-in-Publication data is on file.
ISBN-13: 978-1-58705-610-9
ISBN-10: 1-58705-610-0
Warning and Disclaimer
This book is designed to provide information about the configuration of Cisco Catalyst switches. Every
effort has been made to make this book as complete and as accurate as possible, but no warranty or fit-
ness is implied.
The information is provided on an “as is” basis. The authors, 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 appropriate-
ly 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 or service mark.
ii Cisco LAN Switching Configuration Handbook
www.allitebooks.com

Table of Contents

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Cisco Catalyst 4948 Specifications

General IconGeneral
Switching Capacity136 Gbps
Forwarding Rate102 Mpps
Rack Units1U
MAC Address Table Size32, 000 entries
Authentication MethodRADIUS, TACACS+
RAM256 MB
Flash Memory64 MB
Power DeviceInternal power supply
Voltage Required100-240 VAC
Weight16.5 lbs
Operating Humidity10% to 85% non-condensing
Ports48 x 10/100/1000
Power SupplyInternal
Layer SupportLayer 3
Jumbo Frame SupportYes (up to 9216 bytes)
Routing ProtocolRIP, OSPF, EIGRP, BGP
Remote Management ProtocolSNMP, Telnet, SSH
FeaturesVLAN support, QoS
Compliant StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.1Q, IEEE 802.1p
Operating Temperature32 °F to 104 °F (0 °C to 40 °C)

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