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Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications
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IEEE Std 802.3™-2002
(Revision of IEEE Std 802.3, 2000 Edition)
IEEE Standards
802.3
™
IEEE Standard for
Information technology—
Telecommunications and information
exchange between systems—
Local and metropolitan area networks—
Specific requirements
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access
method and physical layer specifications
Published by
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
8 March 2002
IEEE Computer Society
Sponsored by the
LAN/MAN Standards Committee
IEEE Standards
Print: SH94973
PDF: SS94973
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2002 by the Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 8 March 2002. Printed in the United States of America.
The marks "IEEE" and "802" are registered trademarks belonging to the Institute of Electrical and Electronics Engineers, Inc.
Print:
ISBN 0-7381-3088-5 SH94973
PDF:
ISBN 0-7381-3089-3 SS94973
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior
written permission of the publisher.
IEEE Std 802.3
™
-2002
(Revision of IEEE Std 802.3, 2000 Edition)
Information technology—
Telecommunications and information exchange between systems—
Local and metropolitan area networks—
Specific requirements—
Part 3: Carrier sense multiple access
with collision detection (CSMA/CD)
access method and physical layer
specifications
Sponsor
LAN/MAN Standards Committee
of the
IEEE Computer Society
Abstract:
The media access control characteristics for the Carrier Sense Multiple Access with Collision De-
tection (CSMA/CD) access method for shared medium local area networks are described. The control charac-
teristics for full duplex dedicated channel use are also described. Specifications are provided for MAU types
1BASE5 at 1 Mb/s; Attachment Unit Interface (AUI) and MAU types 10BASE5, 10BASE2, FOIRL (fiber optic
inter-repeater link), 10BROAD36, 10BASE-T, 10BASE-FL, 10BASE-FB, and 10BASE-FP at 10 Mb/s; Media
Independent Interface (MII) and PHY types 100BASE-T4, 100BASE-TX, 100BASE-FX, and 100BASE-T2 at
100 Mb/s; and the Gigabit MII (GMII) and 1000BASE-X PHY types, 1000BASE-SX, 1000BASE-LX, and
1000BASE-CX, which operate at 1000 Mb/s (Gigabit Ethernet) as well as PHY type 1000BASE-T. Repeater
specifications are provided at each speed. Full duplex specifications are provided at the Physical Layer for
10BASE-T, 10BASE-FL, 100BASE-TX, 100BASE-FX, 100BASE-T2, and Gigabit Ethernet. System consider-
ations for multisegment networks at each speed and management information base (MIB) specifications and
additions to support Virtual Bridged Local Area Networks (VLANs) as specified in IEEE P802.1Q are also pro-
vided. Also specified is an optional Link Aggregation sublayer which multiple physical links to be aggregated
together to form a single logical link.
Keywords:
Aggregated Link; Aggregator; Auto Negotiation; Category 5; copper; data processing; Ethernet;
gigabit; information interchange, Link Aggregation; local area networks, management; MASTER-SLAVE;
medium dependent interface; mode of data transmission; models; network interconnection; physical coding
sublayer; Physical Layer; physical medium attachment; repeater; type field; VLAN TAG
IEEE Standards
documents are developed within the IEEE Societies and the Standards Coordinating Committees of
the IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards through a consensus
development process, approved by the American National Standards Institute, which brings together volunteers repre-
senting varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of the
Institute and serve without compensation. While the IEEE administers the process and establishes rules to promote
fairness in the consensus development process, the IEEE does not independently evaluate, test, or verify the accuracy
of any of the information contained in its standards or implementations thereof.
Use of an IEEE Standard is wholly voluntary. The IEEE disclaims liability for any personal injury, property or other
damage, of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly
resulting from the publication, use of, or reliance upon this, or any other IEEE Standard document.
The IEEE does not warrant or represent the accuracy or content of the material contained herein, and expressly dis-
claims any express or implied warranty, including any implied warranty of merchantability or fitness for a specific pur-
pose, or that the use of the material contained herein is free from patent infringement. IEEE Standards documents are
supplied “
AS IS
.”
The existence of an IEEE Standard does not imply that there are no other ways to produce, test, measure, purchase,
market, or provide other goods and services related to the scope of the IEEE Standard. Furthermore, the viewpoint
expressed at the time a standard is approved and issued is subject to change brought about through developments in the
state of the art and comments received from users of the standard. Every IEEE Standard is scheduled for review at least
every five years for revision or reaffirmation. When a document is more than five years old and has not been reaffirmed,
it is reasonable to conclude that its contents, although still of some value, do not wholly reflect the present state of the
art. Users are cautioned to check to determine that they have the latest edition of any IEEE Standard.
In publishing and making this document available, the IEEE is not suggesting or rendering professional or other ser-
vices for, or on behalf of, any person or entity. Nor is the IEEE undertaking to perform any duty owed by any other per-
son or entity to another. Any person utilizing this, and any other IEEE Standards document, should rely upon the
advice of a competent professional in determining the exercise of reasonable care in any given circumstances.
Interpretations: Occasionally questions may arise regarding the meaning of portions of standards as they relate to spe-
cific applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiate action
to prepare appropriate responses. Since IEEE Standards represent a consensus of concerned interests, it is important to
ensure that any interpretation has also received the concurrence of a balance of interests. For this reason, IEEE and the
members of its societies and Standards Coordinating Committees are not able to provide an instant response to inter-
pretation requests except in those cases where the matter has previously received formal consideration.
1
Comments for revision of IEEE Standards are welcome from any interested party, regardless of membership affiliation
with IEEE. Suggestions for changes in documents should be in the form of a proposed change of text, together with
appropriate supporting comments. Comments on standards and requests for interpretations should be addressed to:
Secretary, IEEE-SA Standards Board
445 Hoes Lane
P.O. Box 1331
Piscataway, NJ 08855-1331
USA
Authorization to photocopy portions of any individual standard for internal or personal use is granted by the Institute
of Electrical and Electronics Engineers, Inc., provided that the appropriate fee is paid to Copyright Clearance Center.
To arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 Rosewood
Drive, Danvers, MA 01923 USA; (978) 750-8400. Permission to photocopy portions of any individual standard for
educational classroom use can also be obtained through the Copyright Clearance Center.
1
Interpretations provided by 802.3 since November 1996 are available at http://www.ieee802.org/3/interp/index.html
Note: Attention is called to the possibility that implementation of this standard may require use of subject mat-
ter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or
validity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying patents
for which a license may be required by an IEEE standard or for conducting inquiries into the legal validity or
scope of those patents that are brought to its attention.
Copyright © 2002 IEEE. All rights reserved.
iii
Introduction to IEEE Std 802.3-2002
This standard is part of a family of standards for local and metropolitan area networks. The relationship
between the standard and other members of the family is shown below. (The numbers in the figure refer to
IEEE standard numbers.
1
)
This family of standards deals with the Physical and Data Link layers as defined by the International
Organization for Standardization (ISO) Open Systems Interconnection (OSI) Basic Reference Model
(ISO/IEC 7498-1: 1994). The access standards define seven types of medium access technologies and
associated physical media, each appropriate for particular applications or system objectives. Other types are
under investigation.
The standards defining the technologies noted above are as follows:
1
The IEEE standards referred to in the above figure and list are trademarks of the Institute of Electrical and Electronics Engineers, Inc.
• IEEE Std 802
Overview and Architecture.
This standard provides an overview to the
family of IEEE 802 Standards.
• IEEE Std 802.1B
™
and 802.1k
™
[ISO/IEC 15802-2]
LAN/MAN Management.
Defines an OSI management-compatible
architecture, and services and protocol elements for use in a LAN/MAN
environment for performing remote management.
• IEEE Std 802.1D
™
Media Access Control
(MAC) Bridges.
Specifies an architecture and protocol
for the interconnection of IEEE 802 LANs below the MAC service boundary.
• IEEE Std 802.1E
™
[ISO/IEC 15802-4]
System Load Protocol.
Specifies a set of services and protocol for those aspects
of management concerned with the loading of systems on IEEE 802 LANs.
• IEEE Std 802.1F
™
Common Definitions and Procedures for IEEE 802 Management Information
.
• IEEE Std 802.1G
™
[ISO/IEC 15802-5]
Remote Media Access Control
(MAC) Bridging
. Specifies extensions for the
interconnection, using non-LAN communication technologies, of geographically
separated IEEE 802 LANs below the level of the logical link control protocol.
• IEEE Std 802.1H
™
[ISO/IEC TR 11802-5]
Media Access Control (MAC) Bridging of Ethernet V2.0 in Local Area
Networks
.
* Formerly IEEE Std 802.1A
™
DATA
LINK
LAYER
PHYSICAL
802.2
™
LOGICAL LINK
802.1
™
BRIDGING
802.1
™
MANAGEMENT
802
®
OVERVIEW & ARCHITECTURE*
802.10
™
SECURITY
802.3
MEDIUM
ACCESS
.
802.3
PHYSICAL
802.4
™
MEDIUM
ACCESS
802.4
PHYSICAL
802.5
™
MEDIUM
ACCESS
802.5
PHYSICAL
802.6
™
MEDIUM
ACCESS
802.6
PHYSICAL
802.11
™
MEDIUM
ACCESS
802.11
PHYSICAL
802.12
™
MEDIUM
ACCESS
802.12
PHYSICAL
LAYER
802.16
™
MEDIUM
ACCESS
802.16
PHYSICAL
802.15
™
MEDIUM
ACCESS
802.15
PHYSICAL
iv
Copyright © 2002 IEEE. All rights reserved.
Conformance test methodology
An additional standard, IEEE Std 1802.3
™
provides conformance test information for 10BASE-T.
IEEE Std 802.3-2002
IEEE Std 802.3-2002 has been divided into three sectionss. The division is as follows:
Section One— Includes Clause 1 through Clause 20 and Annexes A through H.
Section Two—Includes Clause 21 through Clause 33 and Annexes 22A through 32A.
Section Three—Includes Clause 34 through Clause 43 and Annexes 36A through 43C.
This standard contains state-of-the-art material. The area covered by this standard is undergoing evolution.
Revisions are anticipated to this standard within the next few years to clarify existing material, to correct
possible errors, and to incorporate new related material. Details on the contents of this standard are provided
on the following pages.
• IEEE Std 802.2
[ISO/IEC 8802-2]
Logical Link Control.
• IEEE Std 802.3
CSMA/CD Access Method and Physical Layer Specifications.
• IEEE Std 802.4
[ISO/IEC 8802-4]
Token Passing Bus Access Method and Physical Layer Specifications.
• IEEE Std 802.5
[ISO/IEC 8802-5]
Token Ring Access Method and Physical Layer Specifications.
• IEEE Std 802.6
[ISO/IEC 8802-6]
Distributed Queue Dual Bus Access Method and Physical Layer
Specifications.
• IEEE Std 802.10
Interoperable LAN/MAN Security.
• IEEE Std 802.11
[ISO/IEC DIS 8802-11]
Wireless LAN Medium Access Control (MAC) and Physical Layer
Specifications.
• IEEE Std 802.12
[ISO/IEC 8802-12]
Demand Priority Access Method, Physical Layer and Repeater
Specifications.
• IEEE Std 802.15
Wireless Medium Access Control (MAC) and Physical Layer (PHY)
Specifications for: Wireless Personal Area Networks.
• IEEE Std 802.16
Standard Air Interface for Fixed Broadband Wireless Access Systems.
In addition to the family of standards, the following is a recommended practice for a common Physical
Layer technology:
• IEEE Std 802.7
™
IEEE Recommended Practice for Broadband Local Area Networks.
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