Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 12: Maintenance #15: Power over Ethernet

Télécommunications et échange entre systèmes informatiques — Exigences pour les réseaux locaux et métropolitains — Partie 3: Norme pour Ethernet — Amendement 12: Maintenance #15: Alimentation électrique par câble Ethernet

General Information

Status
Published
Publication Date
16-Oct-2022
Current Stage
6060 - International Standard published
Due Date
21-Oct-2023
Completion Date
17-Oct-2022
Ref Project

RELATIONS

Buy Standard

Standard
ISO/IEC/IEEE 8802-3:2021/Amd 12:2022 - Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 12: Maintenance #15: Power over Ethernet Released:17. 10. 2022
English language
30 pages
sale 15% off
Preview
sale 15% off
Preview
Draft
ISO/IEC/IEEE 8802-3:2021/FDAmd 12 - Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 12: Maintenance #15: Power over Ethernet Released:3/31/2022
English language
30 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

INTERNATIONAL ISO/
STANDARD IEC/IEEE
8802-3
Third edition
2021-02
AMENDMENT 12
2022-10
Telecommunications and exchange
between information technology
systems — Requirements for local and
metropolitan area networks —
Part 3:
Standard for Ethernet
AMENDMENT 12: Maintenance #15:
Power over Ethernet
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
AMENDEMENT 12: Maintenance #15: Alimentation électrique par
câble Ethernet
Reference number
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
© IEEE 2021
---------------------- Page: 1 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© IEEE 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from IEEE at the address below.

Institute of Electrical and Electronics Engineers, Inc
3 Park Avenue, New York
NY 10016-5997, USA
Email: stds.ipr@ieee.org
Website: www.ieee.org
Published in Switzerland
© IEEE 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that are

members of ISO or IEC participate in the development of International Standards through technical

committees established by the respective organization to deal with particular fields of technical activity.

ISO and IEC technical committees collaborate in fields of mutual interest. Other international

organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the

work.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for

the different types of ISO/IEC documents should be noted. This document was drafted in accordance

with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives or

www.iec.ch/members_experts/refdocs).

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 representing 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.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Details

of any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents) or the IEC list of patent

declarations received (see https://patents.iec.ch).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT),

see www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.

ISO/IEC/IEEE 8802-3:2021/Amd.12 was prepared by the LAN/MAN of the IEEE Computer Society (as

IEEE 802.3cv-2021) and drafted in accordance with its editorial rules. It was adopted, under the “fast-

track procedure” defined in the Partner Standards Development Organization cooperation agreement

between ISO and IEEE, by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 6, Telecommunications and information exchange between systems.

A list of all parts in the ISO/IEC/IEEE 8802-3 series can be found on the ISO and IEC websites.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-

committees.
© IEEE 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
IEEE Std 802.3cv™-2021
(Amendment to IEEE Std 802.3™-2018
as amended by IEEE Std 802.3cb™-2018,
IEEE Std 802.3bt™-2018,
IEEE Std 802.3cd™-2018,
IEEE Std 802.3cn™-2019,
IEEE Std 802.3cg™-2019,
IEEE Std 802.3cq™-2020,
IEEE Std 802.3cm™-2020,
IEEE Std 802.3ch™-2020,
IEEE Std 802.3ca™-2020,
IEEE Std 802.3cr™-2021,
and IEEE Std 802.3cu™-2021)
IEEE Standard for Ethernet
Amendment 12:
Maintenance #15: Power over Ethernet
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 9 May 2021
IEEE SA Standards Board
---------------------- Page: 4 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)

Abstract: This amendment implements editorial and technical corrections, refinements, and

clarifications to Clause 145, Power over Ethernet, and related portions of the standard. No ne w

features are added by this amendment.

Keywords: amendment, DTE power via MDI, Ethernet, IEEE 802.3™, IEEE 802.3bt™, PoE,

Power over Ethernet
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2021 by The Institute of Electrical and Electronics Engineers, Inc.

All rights reserved. Published 28 May 2021. Printed in the United States of America.

IEEE and 802 are registered trademarks in the U.S. Patent & Trademark Office, owned by The Institute of Electrical and

Electronics Engineers, Incorporated.
PDF: ISBN 978-1-5044-7556-3 STD24692
Print: ISBN 978-1-5044-7557-0 STDPD24692
IEEE prohibits discrimination, harassment and bullying.

For more information, visit http://www.ieee.org/web/aboutus/whatis/policies/p9-26.html.

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.
---------------------- Page: 5 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Important Notices and Disclaimers Concerning IEEE Standards
Documents

IEEE Standards documents are made available for use subject to important notices and legal disclaimers.

These notices and disclaimers, or a reference to this page (https://standards.ieee.org/ipr/disclaimers.html),

appear in all standards and may be found under the heading “Important Notices and Disclaimers Concerning

IEEE Standards Documents.”
Notice and Disclaimer of Liability Concerning the Use of IEEE Standards
Documents

IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating

Committees of the IEEE Standards Association (IEEE SA) Standards Board. IEEE develops its standard s

through an accredited consensus development process, which brings together volunteers representing varied

viewpoints and interests to achieve the final product. IEEE Standards are documents developed by

volunteers with scientific, academic, and industry-based expertise in technical working groups. Volunteers

are not necessarily members of IEEE or IEEE SA, and participate without compensation from IEEE. While

IEEE administers the process and establishes rules to promote fairness in the consensus developmen t

process, IEEE does not independently evaluate, test, or verify the accuracy of any of the information or the

soundness of any judgments contained in its standards.

IEEE does not warrant or represent the accuracy or completeness of the material contained in its standards,

and expressly disclaims all warranties (express, implied and statutory) not included in this or any othe r

document relating to the standard, including, but not limited to, the warranties of: merchantability; fitness

for a particular purpose; non-infringement; and quality, accuracy, effectiveness, currency, or completeness

of material. In addition, IEEE disclaims any and all conditions relating to results and workmanlike effort. In

addition, IEEE does not warrant or represent that the use of the material contained in its standards is free

from patent infringement. IEEE Standards documents are supplied “AS IS” and “WITH ALL FAULTS.”

Use of an IEEE standard is wholly voluntary. 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 t o

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.

In publishing and making its standards available, IEEE is not suggesting or rendering professional or other

services for, or on behalf of, any person or entity, nor is IEEE undertaking to perform any duty owed by any

other person or entity to another. Any person utilizing any IEEE Standards document, should rely upon his

or her own independent judgment in the exercise of reasonable care in any given circumstances or, as

appropriate, seek the advice of a competent professional in determining the appropriateness of a given IEEE

standard.
IN NO EVENT SHALL IEEE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO: THE
NEED TO PROCURE SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE PUBLICATION, USE OF, OR RELIANCE
UPON ANY STANDARD, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE AND
REGARDLESS OF WHETHER SUCH DAMAGE WAS FORESEEABLE.
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 6 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Translations

The IEEE consensus development process involves the review of documents in English only. In the even t

that an IEEE standard is translated, only the English version published by IEEE is the approved IEEE

standard.
Official statements

A statement, written or oral, that is not processed in accordance with the IEEE SA Standards Board

Operations Manual shall not be considered or inferred to be the official position of IEEE or any of its

committees and shall not be considered to be, nor be relied upon as, a formal position of IEEE. At lectures,

symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall

make it clear that the presenter's views should be considered the personal views of that individual rather than

the formal position of IEEE, IEEE SA, the Standards Committee, or the Working Group.

Comments on standards

Comments for revision of IEEE Standards documents are welcome from any interested party, regardless of

membership affiliation with IEEE or IEEE SA. However, IEEE does not provide interpretations,

consulting information, or advice pertaining to IEEE Standards documents.

Suggestions for changes in documents should be in the form of a proposed change of text, together wit h

appropriate supporting comments. Since IEEE standards represent a consensus of concerned interests, it is

important that any responses to comments and questions also receive 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 comments, or questions except in those cases where the matter

has previously been addressed. For the same reason, IEEE does not respond to interpretation requests. Any

person who would like to participate in evaluating comments or in revisions to an IEEE standard is welcome

to join the relevant IEEE working group. You can indicate interest in a working group using the Interests tab

in the Manage Profile & Interests area of the IEEE SA myProject system. An IEEE Account is needed t o

access the application.
Comments on standards should be submitted using the Contact Us form.
Laws and regulations

Users of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the

provisions of any IEEE Standards document does not constitute compliance to any applicable regulatory

requirements. Implementers of the standard are responsible for observing or referring to the applicable

regulatory requirements. IEEE does not, by the publication of its standards, intend to urge action that is not

in compliance with applicable laws, and these documents may not be construed as doing so.

Data privacy

Users of IEEE Standards documents should evaluate the standards for considerations of data privacy and

data ownership in the context of assessing and using the standards in compliance with applicable laws and

regulations.
Copyrights

IEEE draft and approved standards are copyrighted by IEEE under US and international copyright laws.

They are made available by IEEE and are adopted for a wide variety of both public and private uses. These

Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 7 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)

include both use, by reference, in laws and regulations, and use in private self-regulation, standardization,

and the promotion of engineering practices and methods. By making these documents available for use and

adoption by public authorities and private users, IEEE does not waive any rights in copyright to the

documents.
Photocopies

Subject to payment of the appropriate licensing fees, IEEE will grant users a limited, non-exclusive license

to photocopy portions of any individual standard for company or organizational internal use or individual,

non-commercial use only. To arrange for payment of licensing fees, please contact Copyright Clearance

Center, Customer Service, 222 Rosewood Drive, Danvers, MA 01923 USA; +1 978 750 8400;

https://www.copyright.com/. Permission to photocopy portions of any individual standard for educational

classroom use can also be obtained through the Copyright Clearance Center.
Updating of IEEE Standards documents

Users of IEEE Standards documents should be aware that these documents may be superseded at any time

by the issuance of new editions or may be amended from time to time through the issuance of amendments,

corrigenda, or errata. An official IEEE document at any point in time consists of the current edition of the

document together with any amendments, corrigenda, or errata then in effect.

Every IEEE standard is subjected to review at least every 10 years. When a document is more than 10 years

old and has not undergone a revision process, it is reasonable to conclude that its contents, although still o f

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 order to determine whether a given document is the current edition and whether it has been amended

through the issuance of amendments, corrigenda, or errata, visit IEEE Xplore or contact IEEE. For more

information about the IEEE SA or IEEE's standards development process, visit the IEEE SA Website.

Errata

Errata, if any, for all IEEE standards can be accessed on the IEEE SA Website. Search for standard number

and year of approval to access the web page of the published standard. Errata links are located under the

Additional Resources Details section. Errata are also available in IEEE Xplore. Users are encouraged to

periodically check for errata.
Patents
IEEE Standards are developed in compliance with the IEEE SA Patent Policy.
IMPORTANT NOTICE

IEEE Standards do not guarantee or ensure safety, security, health, or environmental protection, or ensur e

against interference with or from other devices or networks. IEEE Standards development activities consider

research and information presented to the standards development group in developing any safety

recommendations. Other information about safety practices, changes in technology or technology

implementation, or impact by peripheral systems also may be pertinent to safety considerations during

implementation of the standard. Implementers and users of IEEE Standards documents are responsible for

determining and complying with all appropriate safety, security, environmental, health, and interference

protection practices and all applicable laws and regulations.
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 8 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Participants

The following individuals were officers and members of the IEEE 802.3 Working Group at the beginning of

the IEEE P802.3cv Working Group ballot.
David J. Law, IEEE 802.3 Working Group Chair
Adam Healey, IEEE 802.3 Working Group Vice-Chair
Jon Lewis, IEEE 802.3 Working Group Secretary
Steven B. Carlson, IEEE 802.3 Working Group Executive Secretary
Valerie Maguire, IEEE 802.3 Working Group Treasurer
Chad Jones, IEEE P802.3cv Maintenance #15: Power over Ethernet Task Force Chair

Jon Lewis, IEEE P802.3cv Maintenance #15: Power over Ethernet Task Force Editor-in-Chief

David Abramson, IEEE P802.3cv Maintenance #15: Power over Ethernet Task Force Comment Editor

Pete Anslow Olaf Grau Kent Lusted
Michikazu Aono Robert Grow Jeffery Maki
Nobuyasu Araki Martin Gubow David Malicoat
Eric Maniloff
Tim Baggett Mark Gustlin
Flavio Marques
Thananya Baldwin Marek Hajduczenia
Arthur Marris
Steven Baumgartner Howard Heck
Takeo Masuda
Denis Beaudoin David Hess
Mick McCarthy
Gitesh Bhagwat Brian Holden
Brett McClellan
Rich Boyer Yasuhiro Hyakutake
Larry McMillan
David Brandt Jonathan Ingham
Greg McSorley
Kazuhiko Ishibe
Ralf-Peter Braun
Richard Mellitz
Hideki Isono
Theodore Brillhart
Shimon Muller
Tom Issenhuth
Paul Brooks
Sean Murphy
Hiroaki Ito
Matthew Brown
James Nadolny
Andrew Jimenez
Leon Bruckman
Edward Nakamoto
John Johnson
Jairo Bustos Heredia
Raymond Nering
Adrian Butter Peter Jones
Paul Neveux
John Calvin Lokesh Kabra
Gary Nicholl
Clark Carty Haysam Kadry
Shawn Nicholl
David Chalupsky Manabu Kagami
Paul Nikolich
Jacky Chang Upen Kareti
Kevin Noll
Xin Chang Athanasios Kasapi
Mark Nowell
Chan Chen Yong Kim
David Ofelt
Golam Choudhury Mark Kimber
Ryo Okabe
Keng Hua Chuang Michael Klempa
Tom Palkert
John D'Ambrosia Curtis Knittle
Carlos Pardo
Piers Dawe Elizabeth Kochuparambil
Earl Parsons
Fred Dawson Sam Kocsis
Gerald Pepper
Gerrit den Besten Wojciech Koczwara
Rubén Perez De Aranda Alonso
Paul Kolesar
Claudio DeSanti
David Piehler
Taiji Kondo
Curtis Donahue
Fabio Pittala
Daniel Koppermueller
Kathryn Dube
Christopher Pohl
Mike Dudek Glen Kramer
William Powell
Frank Effenberger Taketo Kumada
Rick Rabinovich
David Estes Hans Lackner
Parthasarathy Raju
John Ewen Frank Lambrecht
Adee Ran
Vincent Ferretti Mark Laubach
Alon Regev
Brian Franchuk Greg Le Cheminant
Duane Remein
Matthias Fritsche David Lewis
Victor Renteria
Takashi Fukuoka Mike-Peng Li
Thomas Rettig
Ali Ghiasi Alex Lin
Toshiaki Sakai
Joel Goergen Robert Lingle
Sam Sambasivan
Steven Gorshe Hai-Feng Liu Edward Sayre
Hideki Goto William Lo Matthew Schmitt
Steffen Graber Yuanqiu Luo Hossein Sedarat
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 9 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Masood Shariff Michael Takefman Dong Wei
Masato Shiino Masaru Terada Brian Welch
Ramin Shirani Geoffrey Thompson Matthias Wendt
Kapil Shrikhande Pirooz Tooyserkani
Natalie Wienckowski
Jeff Slavick Nathan Tracy Dance Wu
Scott Sommers Viet Tran Peter Wu
Massimo Sorbara David Tremblay Dayin Xu
Edward Sprague Stephen Trowbridge Yu Xu
Peter Stassar Mike Tu James Young
Heath Stewart Ed Ulrichs Lennart Yseboodt
Junqing Sun Alexander Umnov Xingxin Zhang
Steve Swanson Prasad Venugopal Chunhui Zhu
Tomoo Takahara Edward Walter Yan Zhuang
Satoshi Takahashi Roy Wang
Martin Zielinski
Tadashi Takahashi Xuehuan Wang George Zimmerman
Kazuya Takayama James Weaver Pavel Zivny

The following members of the individual balloting committee voted on this standard. Balloters may have

voted for approval, disapproval, or abstention.
Robert Aiello David J. Law Bartien Sayogo
Thomas Alexander Pi-Cheng Law
Heath Stewart
Curtis Ashton Hyeong Ho Lee
Walter Struppler
Rich Boyer Jon Lewis
Mitsutoshi Sugawara
Ralf-Peter Braun Valerie Maguire
Michael Thompson
Jeffery Maki
Jairo Bustos Heredia
David Tremblay
William Byrd Michael Maytum
Mark-Rene Uchida
John Calvin Brett McClellan
Alexander Umnov
Steven B. Carlson Richard Mellitz
Dmitri Varsanofiev
Juan Carreon Rick Murphy
Prabodh Varshney
Clark Carty Paul Nikolich
Ionel Marius Vladan
Charles Cook Satoshi Obara
Ruoxu Wang
Avraham Freedman Robert O'Hara
Matthias Fritsche Carlos Pardo Lisa Ward
Marek Hajduczenia Bansi Patel Keith Waters
Xiang He Arumugam Paventhan
James Weaver
Adam Healey David Piehler
Stephen Webb
David Hess Rick Pimpinella
Karl Weber
Werner Hoelzl Fabio Pittala
Matthias Wendt
Gergely Huszak Patty Polpattana
Scott Willy
Yasuhiro Hyakutake Adee Ran
Andreas Wolf
Tom Issenhuth R. K. Rannow
Peter Wu
Chad Jones Lakshman Raut
James Young
Peter Jones Maximilian Riegel
Lennart Yseboodt
Lokesh Kabra Benjamin Rolfe
Yu Yuan
Piotr Karocki Toshiaki Sakai
Oren Yuen
Stuart Kerry
Hugo Ricardo Sanchez Reategui
Yong Kim Olindo Savi Janusz Zalewski
Mark Laubach Hiroshi Sawano George Zimmerman
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 10 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)

:KHQWKH,(((6$6WDQGDUGV%RDUGDSSURYHGWKLVVWDQGDUGRQ0D\LWKDGWKHIROORZLQJ

PHPEHUVKLS
*DU\+RIIPDQ&KDLU
-RQ:DOWHU5RVGDKO9LFH&KDLU
-RKQ'.XOLFN3DVW&KDLU
.RQVWDQWLQRV.DUDFKDOLRV6HFUHWDU\
(GZDUG$$GG\ +RZDUG/L 0HKPHW8OHPD
'RXJ(GZDUGV 'DR]KXDQJ/LQ /HL:DQJ
5DP\$KPHG)DWK\ .HYLQ/X ).HLWK:DWHUV
-7UDYLV*ULIILWK 'DOHHS&0RKOD .DUO:HEHU
7KRPDV.RVK\ &KHQKXL1LX 6KD:HL
'DPLU1RYRVHO +RZDUG:ROIPDQ
-RVHSK/.RHSILQJHU
$QQHWWH5HLOO\
'DYLG-/DZ 'DLGL=KRQJ
'RURWK\6WDQOH\
0HPEHU(PHULWXV
&RS\ULJKW‹,((($OOULJKWVUHVHUYHG
---------------------- Page: 11 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Introduction

This introduction is not part of IEEE Std 802.3cv-2021, IEEE Standard for Ethernet—Amendment 12 :

Maintenance #15: Power over Ethernet.

IEEE Std 802.3™ was first published in 1985. Since the initial publication, many projects have added

functionality or provided maintenance updates to the specifications and text included in the standard. Each

IEEE 802.3 project/amendment is identified with a suffix (e.g., IEEE Std 802.3ba™-2010).

The half duplex Media Access Control (MAC) protocol specified in IEEE Std 802.3-1985 is Carrier Sense

Multiple Access with Collision Detection (CSMA/CD). This MAC protocol was key to the experimental

Ethernet developed at Xerox Palo Alto Research Center, which had a 2.94 Mb/s data rate. Ethernet at

10 Mb/s was jointly released as a public specification by Digital Equipment Corporation (DEC), Intel and

Xerox in 1980. Ethernet at 10 Mb/s was approved as an IEEE standard by the IEEE Standards Board in 1983

and subsequently published in 1985 as IEEE Std 802.3-1985. Since 1985, new media options, new speeds of

operation, and new capabilities have been added to IEEE Std 802.3. A full duplex MAC protocol was added

in 1997.

Some of the major additions to IEEE Std 802.3 are identified in the marketplace with their project number.

This is most common for projects adding higher speeds of operation or new protocols. For example, IEEE

Std 802.3u™ added 100 Mb/s operation (also called Fast Ethernet), IEEE Std 802.3z added 1000 Mb/s

operation (also called Gigabit Ethernet), IEEE Std 802.3ae added 10 Gb/s operation (also called 10 Gigabit

Ethernet), IEEE Std 802.3ah™ specified access network Ethernet (also called Ethernet in the First Mile) and

IEEE Std 802.3ba added 40 Gb/s operation (also called 40 Gigabit Ethernet) and 100 Gb/s operation (also

called 100 Gigabit Ethernet). These major additions are all now included in and are superseded by IEEE St d

802.3-2018 and are not maintained as separate documents.

At the date of IEEE Std 802.3cv-2021 publication, IEEE Std 802.3 was composed of the following

documents:
IEEE Std 802.3-2018

Section One—Includes Clause 1 through Clause 20 and Annex A through Annex H and Annex 4A.

Section One includes the specifications for 10 Mb/s operation and the MAC, frame formats and service

interfaces used for all speeds of operation.

Section Two—Includes Clause 21 through Clause 33 and Annex 22A through Annex 33E. Sectio n

Two includes management attributes for multiple protocols and speed of operation as well as

specifications for providing power over twisted pair cabling for multiple operational speeds. It also

includes general information on 100 Mb/s operation as well as most of the 100 Mb/s Physical Layer

specifications.

Section Three—Includes Clause 34 through Clause 43 and Annex 36A through Annex 43C. Section

Three includes general information on 1000 Mb/s operation as well as most of the 1000 Mb/s Physical

Layer specifications.

Section Four—Includes Clause 44 through Clause 55 and Annex 44A through Annex 55B. Section

Four includes general information on 10 Gb/s operation as well as most of the 10 Gb/s Physical Layer

specifications.

Section Five—Includes Clause 56 through Clause 77 and Annex 57A through Annex 76A. Clause 56

through Clause 67 and Clause 75 through Clause 77, as well as associated annexes, specify subscriber

access and other Physical Layers and sublayers for operation from 512 kb/s to 10 Gb/s, and defines

Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 12 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)

services and protocol elements that enable the exchange of IEEE Std 802.3 format frames between

stations in a subscriber access network. Clause 68 specifies a 10 Gb/s Physical Layer specification.

Clause 69 through Clause 74 and associated annexes specify Ethernet operation over electrical

backplanes at speeds of 1000 Mb/s and 10 Gb/s.

Section Six—Includes Clause 78 through Clause 95 and Annex 83A through Annex 93C. Clause 78

specifies Energy-Efficient Ethernet. Clause 79 specifies IEEE 802.3 Organizationally Specific Link

Layer Discovery Protocol (LLDP) type, length, and value (TLV) information elements. Clause 80

through Clause 95 and associated annexes include general information on 40 Gb/s and 100 Gb/s

operation as well the 40 Gb/s and 100 Gb/s Physical Layer specifications. Clause 90 specifies Ethernet

support for time synchronization protocols.

Section Seven—Includes Clause 96 through Clause 115 and Annex 97A through Annex 115A.

Clause 96 through Clause 98, Clause 104, and associated annexes, specify Physical Layers and

optional features for 100 Mb/s and 1000 Mb/s operation over a single twisted pair. Clause 100 throug h

Clause 103, as well as associated annexes, specify Physical Layers for the operation of the EPON

protocol over coaxial distribution networks. Clause 105 through Clause 114 and associated annexes

include general information on 25 Gb/s operation as well as 25 Gb/s Physical Layer specifications.

Clause 99 specifies a MAC merge sublayer for the interspersing of express traffic. Clause 115 and its

associated annex specify a Physical Layer for 1000 Mb/s operation over plastic optical fiber.

Section Eight—Includes Clause 116 through Clause 126 and Annex 119A through Annex 120E.

Clause 116 through Clause 124 and associated annexes include general information on 200 Gb/s and

400 Gb/s operation as well the 200 Gb/s and 400 Gb/s Physical Layer specifications. Clause 125 and

Clause 126 include general information on 2.5 Gb/s and 5 Gb/s operation as well as 2.5 Gb/s and

5 Gb/s Physical Layer specifications.
IEEE Std 802.3cb™-2018

Amendment 1—This amendment includes changes to IEEE Std 802.3-2018 and its amendments, and

adds Clause 127 through Clause 130, Annex 127A, Annex 128A, Annex 128B, and Annex 130A. This

amendment adds new Physical Layers for operation at 2.5 Gb/s and 5 Gb/s over electrical backplanes.

IEEE Std 802.3bt™-2018

Amendment 2—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 145,

Annex 145A, Annex 145B, and Annex 145C. This amendment adds power delivery using all four pairs

in the structured wiring plant, resulting in greater power being available to end devices. This

amendment also allows for lower standby power consumption in end devices and adds a mechanism t o

better manage the available power budget.
IEEE Std 802.3cd™-2018

Amendment 3—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 13 1

through Clause 140 and Annex 135A through Annex 136D. This amendment adds MAC parameters,

Physical Layers, and management parameters for the transfer of IEEE 802.3 format frames at 50 Gb/s,

100 Gb/s, and 200 Gb/s.
IEEE St
...

FINAL
AMENDMENT ISO/IEC/IEEE
DRAFT
8802-3:2021
FDAM 12
Third edition
2021-02
AMENDMENT 12
ISO/IEC JTC 1/SC 6
Telecommunications and exchange
Secretariat: KATS
between information technology
Voting begins on:
2022-04-14 systems — Requirements for local and
metropolitan area networks —
Voting terminates on:
2022-09-01
Part 3:
Standard for Ethernet
AMENDMENT 12: Maintenance #15:
Power over Ethernet
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
AMENDEMENT 12
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
© IEEE 2021
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
---------------------- Page: 1 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© IEEE 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from IEEE at the address below.

Institute of Electrical and Electronics Engineers, Inc
3 Park Avenue, New York
NY 10016-5997, USA
Email: stds.ipr@ieee.org
Website: www.ieee.org
Published in Switzerland
© IEEE 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that are

members of ISO or IEC participate in the development of International Standards through technical

committees established by the respective organization to deal with particular fields of technical activity.

ISO and IEC technical committees collaborate in fields of mutual interest. Other international

organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the

work.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO/IEC documents should be noted. This document was drafted in accordance with

the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives or

www.iec.ch/members_experts/refdocs).

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 representing 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.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Details

of any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents) or the IEC list of patent

declarations received (see https://patents.iec.ch).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the World

Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT),

see www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.

ISO/IEC/IEEE 8802-3:2021/DAmd 12 was prepared by the LAN/MAN of the IEEE Computer Society (as

IEEE 802.3cv-2021) and drafted in accordance with its editorial rules. It was adopted, under the “fast-

track procedure” defined in the Partner Standards Development Organization cooperation agreement

between ISO and IEEE, by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 6, Telecommunications and information exchange between systems.

A list of all parts in the ISO/IEC/IEEE 8802-3 series can be found on the ISO and IEC websites.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-

committees.
© IEEE 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
IEEE Std 802.3cv™-2021
(Amendment to IEEE Std 802.3™-2018
as amended by IEEE Std 802.3cb™-2018,
IEEE Std 802.3bt™-2018,
IEEE Std 802.3cd™-2018,
IEEE Std 802.3cn™-2019,
IEEE Std 802.3cg™-2019,
IEEE Std 802.3cq™-2020,
IEEE Std 802.3cm™-2020,
IEEE Std 802.3ch™-2020,
IEEE Std 802.3ca™-2020,
IEEE Std 802.3cr™-2021,
and IEEE Std 802.3cu™-2021)
IEEE Standard for Ethernet
Amendment 12:
Maintenance #15: Power over Ethernet
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 9 May 2021
IEEE SA Standards Board
---------------------- Page: 4 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)

Abstract: This amendment implements editorial and technical corrections, refinements, and

clarifications to Clause 145, Power over Ethernet, and related portions of the standard. No ne w

features are added by this amendment.

Keywords: amendment, DTE power via MDI, Ethernet, IEEE 802.3™, IEEE 802.3bt™, PoE,

Power over Ethernet
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2021 by The Institute of Electrical and Electronics Engineers, Inc.

All rights reserved. Published 28 May 2021. Printed in the United States of America.

IEEE and 802 are registered trademarks in the U.S. Patent & Trademark Office, owned by The Institute of Electrical and

Electronics Engineers, Incorporated.
PDF: ISBN 978-1-5044-7556-3 STD24692
Print: ISBN 978-1-5044-7557-0 STDPD24692
IEEE prohibits discrimination, harassment and bullying.

For more information, visit http://www.ieee.org/web/aboutus/whatis/policies/p9-26.html.

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.
---------------------- Page: 5 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
Important Notices and Disclaimers Concerning IEEE Standards
Documents

IEEE Standards documents are made available for use subject to important notices and legal disclaimers.

These notices and disclaimers, or a reference to this page (https://standards.ieee.org/ipr/disclaimers.html),

appear in all standards and may be found under the heading “Important Notices and Disclaimers Concerning

IEEE Standards Documents.”
Notice and Disclaimer of Liability Concerning the Use of IEEE Standards
Documents

IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating

Committees of the IEEE Standards Association (IEEE SA) Standards Board. IEEE develops its standard s

through an accredited consensus development process, which brings together volunteers representing varied

viewpoints and interests to achieve the final product. IEEE Standards are documents developed by

volunteers with scientific, academic, and industry-based expertise in technical working groups. Volunteers

are not necessarily members of IEEE or IEEE SA, and participate without compensation from IEEE. While

IEEE administers the process and establishes rules to promote fairness in the consensus developmen t

process, IEEE does not independently evaluate, test, or verify the accuracy of any of the information or the

soundness of any judgments contained in its standards.

IEEE does not warrant or represent the accuracy or completeness of the material contained in its standards,

and expressly disclaims all warranties (express, implied and statutory) not included in this or any othe r

document relating to the standard, including, but not limited to, the warranties of: merchantability; fitness

for a particular purpose; non-infringement; and quality, accuracy, effectiveness, currency, or completeness

of material. In addition, IEEE disclaims any and all conditions relating to results and workmanlike effort. In

addition, IEEE does not warrant or represent that the use of the material contained in its standards is free

from patent infringement. IEEE Standards documents are supplied “AS IS” and “WITH ALL FAULTS.”

Use of an IEEE standard is wholly voluntary. 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 t o

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.

In publishing and making its standards available, IEEE is not suggesting or rendering professional or other

services for, or on behalf of, any person or entity, nor is IEEE undertaking to perform any duty owed by any

other person or entity to another. Any person utilizing any IEEE Standards document, should rely upon his

or her own independent judgment in the exercise of reasonable care in any given circumstances or, as

appropriate, seek the advice of a competent professional in determining the appropriateness of a given IEEE

standard.
IN NO EVENT SHALL IEEE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO: THE
NEED TO PROCURE SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE PUBLICATION, USE OF, OR RELIANCE
UPON ANY STANDARD, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE AND
REGARDLESS OF WHETHER SUCH DAMAGE WAS FORESEEABLE.
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 6 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
Translations

The IEEE consensus development process involves the review of documents in English only. In the even t

that an IEEE standard is translated, only the English version published by IEEE is the approved IEEE

standard.
Official statements

A statement, written or oral, that is not processed in accordance with the IEEE SA Standards Board

Operations Manual shall not be considered or inferred to be the official position of IEEE or any of its

committees and shall not be considered to be, nor be relied upon as, a formal position of IEEE. At lectures,

symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall

make it clear that the presenter's views should be considered the personal views of that individual rather than

the formal position of IEEE, IEEE SA, the Standards Committee, or the Working Group.

Comments on standards

Comments for revision of IEEE Standards documents are welcome from any interested party, regardless of

membership affiliation with IEEE or IEEE SA. However, IEEE does not provide interpretations,

consulting information, or advice pertaining to IEEE Standards documents.

Suggestions for changes in documents should be in the form of a proposed change of text, together wit h

appropriate supporting comments. Since IEEE standards represent a consensus of concerned interests, it is

important that any responses to comments and questions also receive 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 comments, or questions except in those cases where the matter

has previously been addressed. For the same reason, IEEE does not respond to interpretation requests. Any

person who would like to participate in evaluating comments or in revisions to an IEEE standard is welcome

to join the relevant IEEE working group. You can indicate interest in a working group using the Interests tab

in the Manage Profile & Interests area of the IEEE SA myProject system. An IEEE Account is needed t o

access the application.
Comments on standards should be submitted using the Contact Us form.
Laws and regulations

Users of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the

provisions of any IEEE Standards document does not constitute compliance to any applicable regulatory

requirements. Implementers of the standard are responsible for observing or referring to the applicable

regulatory requirements. IEEE does not, by the publication of its standards, intend to urge action that is not

in compliance with applicable laws, and these documents may not be construed as doing so.

Data privacy

Users of IEEE Standards documents should evaluate the standards for considerations of data privacy and

data ownership in the context of assessing and using the standards in compliance with applicable laws and

regulations.
Copyrights

IEEE draft and approved standards are copyrighted by IEEE under US and international copyright laws.

They are made available by IEEE and are adopted for a wide variety of both public and private uses. These

Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 7 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)

include both use, by reference, in laws and regulations, and use in private self-regulation, standardization,

and the promotion of engineering practices and methods. By making these documents available for use and

adoption by public authorities and private users, IEEE does not waive any rights in copyright to the

documents.
Photocopies

Subject to payment of the appropriate licensing fees, IEEE will grant users a limited, non-exclusive license

to photocopy portions of any individual standard for company or organizational internal use or individual,

non-commercial use only. To arrange for payment of licensing fees, please contact Copyright Clearance

Center, Customer Service, 222 Rosewood Drive, Danvers, MA 01923 USA; +1 978 750 8400;

https://www.copyright.com/. Permission to photocopy portions of any individual standard for educational

classroom use can also be obtained through the Copyright Clearance Center.
Updating of IEEE Standards documents

Users of IEEE Standards documents should be aware that these documents may be superseded at any time

by the issuance of new editions or may be amended from time to time through the issuance of amendments,

corrigenda, or errata. An official IEEE document at any point in time consists of the current edition of the

document together with any amendments, corrigenda, or errata then in effect.

Every IEEE standard is subjected to review at least every 10 years. When a document is more than 10 years

old and has not undergone a revision process, it is reasonable to conclude that its contents, although still o f

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 order to determine whether a given document is the current edition and whether it has been amended

through the issuance of amendments, corrigenda, or errata, visit IEEE Xplore or contact IEEE. For more

information about the IEEE SA or IEEE's standards development process, visit the IEEE SA Website.

Errata

Errata, if any, for all IEEE standards can be accessed on the IEEE SA Website. Search for standard number

and year of approval to access the web page of the published standard. Errata links are located under the

Additional Resources Details section. Errata are also available in IEEE Xplore. Users are encouraged to

periodically check for errata.
Patents
IEEE Standards are developed in compliance with the IEEE SA Patent Policy.
IMPORTANT NOTICE

IEEE Standards do not guarantee or ensure safety, security, health, or environmental protection, or ensur e

against interference with or from other devices or networks. IEEE Standards development activities consider

research and information presented to the standards development group in developing any safety

recommendations. Other information about safety practices, changes in technology or technology

implementation, or impact by peripheral systems also may be pertinent to safety considerations during

implementation of the standard. Implementers and users of IEEE Standards documents are responsible for

determining and complying with all appropriate safety, security, environmental, health, and interference

protection practices and all applicable laws and regulations.
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 8 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
Participants

The following individuals were officers and members of the IEEE 802.3 Working Group at the beginning of

the IEEE P802.3cv Working Group ballot.
David J. Law, IEEE 802.3 Working Group Chair
Adam Healey, IEEE 802.3 Working Group Vice-Chair
Jon Lewis, IEEE 802.3 Working Group Secretary
Steven B. Carlson, IEEE 802.3 Working Group Executive Secretary
Valerie Maguire, IEEE 802.3 Working Group Treasurer
Chad Jones, IEEE P802.3cv Maintenance #15: Power over Ethernet Task Force Chair

Jon Lewis, IEEE P802.3cv Maintenance #15: Power over Ethernet Task Force Editor-in-Chief

David Abramson, IEEE P802.3cv Maintenance #15: Power over Ethernet Task Force Comment Editor

Pete Anslow Olaf Grau Kent Lusted
Michikazu Aono Robert Grow Jeffery Maki
Nobuyasu Araki Martin Gubow David Malicoat
Eric Maniloff
Tim Baggett Mark Gustlin
Flavio Marques
Thananya Baldwin Marek Hajduczenia
Arthur Marris
Steven Baumgartner Howard Heck
Takeo Masuda
Denis Beaudoin David Hess
Mick McCarthy
Gitesh Bhagwat Brian Holden
Brett McClellan
Rich Boyer Yasuhiro Hyakutake
Larry McMillan
David Brandt Jonathan Ingham
Greg McSorley
Kazuhiko Ishibe
Ralf-Peter Braun
Richard Mellitz
Hideki Isono
Theodore Brillhart
Shimon Muller
Tom Issenhuth
Paul Brooks
Sean Murphy
Hiroaki Ito
Matthew Brown
James Nadolny
Andrew Jimenez
Leon Bruckman
Edward Nakamoto
John Johnson
Jairo Bustos Heredia
Raymond Nering
Adrian Butter Peter Jones
Paul Neveux
John Calvin Lokesh Kabra
Gary Nicholl
Clark Carty Haysam Kadry
Shawn Nicholl
David Chalupsky Manabu Kagami
Paul Nikolich
Jacky Chang Upen Kareti
Kevin Noll
Xin Chang Athanasios Kasapi
Mark Nowell
Chan Chen Yong Kim
David Ofelt
Golam Choudhury Mark Kimber
Ryo Okabe
Keng Hua Chuang Michael Klempa
Tom Palkert
John D'Ambrosia Curtis Knittle
Carlos Pardo
Piers Dawe Elizabeth Kochuparambil
Earl Parsons
Fred Dawson Sam Kocsis
Gerald Pepper
Gerrit den Besten Wojciech Koczwara
Rubén Perez De Aranda Alonso
Paul Kolesar
Claudio DeSanti
David Piehler
Taiji Kondo
Curtis Donahue
Fabio Pittala
Daniel Koppermueller
Kathryn Dube
Christopher Pohl
Mike Dudek Glen Kramer
William Powell
Frank Effenberger Taketo Kumada
Rick Rabinovich
David Estes Hans Lackner
Parthasarathy Raju
John Ewen Frank Lambrecht
Adee Ran
Vincent Ferretti Mark Laubach
Alon Regev
Brian Franchuk Greg Le Cheminant
Duane Remein
Matthias Fritsche David Lewis
Victor Renteria
Takashi Fukuoka Mike-Peng Li
Thomas Rettig
Ali Ghiasi Alex Lin
Toshiaki Sakai
Joel Goergen Robert Lingle
Sam Sambasivan
Steven Gorshe Hai-Feng Liu Edward Sayre
Hideki Goto William Lo Matthew Schmitt
Steffen Graber Yuanqiu Luo Hossein Sedarat
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 9 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
Masood Shariff Michael Takefman Dong Wei
Masato Shiino Masaru Terada Brian Welch
Ramin Shirani Geoffrey Thompson Matthias Wendt
Kapil Shrikhande Pirooz Tooyserkani
Natalie Wienckowski
Jeff Slavick Nathan Tracy Dance Wu
Scott Sommers Viet Tran Peter Wu
Massimo Sorbara David Tremblay Dayin Xu
Edward Sprague Stephen Trowbridge Yu Xu
Peter Stassar Mike Tu James Young
Heath Stewart Ed Ulrichs Lennart Yseboodt
Junqing Sun Alexander Umnov Xingxin Zhang
Steve Swanson Prasad Venugopal Chunhui Zhu
Tomoo Takahara Edward Walter Yan Zhuang
Satoshi Takahashi Roy Wang
Martin Zielinski
Tadashi Takahashi Xuehuan Wang George Zimmerman
Kazuya Takayama James Weaver Pavel Zivny

The following members of the individual balloting committee voted on this standard. Balloters may have

voted for approval, disapproval, or abstention.
Robert Aiello David J. Law Bartien Sayogo
Thomas Alexander Pi-Cheng Law
Heath Stewart
Curtis Ashton Hyeong Ho Lee
Walter Struppler
Rich Boyer Jon Lewis
Mitsutoshi Sugawara
Ralf-Peter Braun Valerie Maguire
Michael Thompson
Jeffery Maki
Jairo Bustos Heredia
David Tremblay
William Byrd Michael Maytum
Mark-Rene Uchida
John Calvin Brett McClellan
Alexander Umnov
Steven B. Carlson Richard Mellitz
Dmitri Varsanofiev
Juan Carreon Rick Murphy
Prabodh Varshney
Clark Carty Paul Nikolich
Ionel Marius Vladan
Charles Cook Satoshi Obara
Ruoxu Wang
Avraham Freedman Robert O'Hara
Matthias Fritsche Carlos Pardo Lisa Ward
Marek Hajduczenia Bansi Patel Keith Waters
Xiang He Arumugam Paventhan
James Weaver
Adam Healey David Piehler
Stephen Webb
David Hess Rick Pimpinella
Karl Weber
Werner Hoelzl Fabio Pittala
Matthias Wendt
Gergely Huszak Patty Polpattana
Scott Willy
Yasuhiro Hyakutake Adee Ran
Andreas Wolf
Tom Issenhuth R. K. Rannow
Peter Wu
Chad Jones Lakshman Raut
James Young
Peter Jones Maximilian Riegel
Lennart Yseboodt
Lokesh Kabra Benjamin Rolfe
Yu Yuan
Piotr Karocki Toshiaki Sakai
Oren Yuen
Stuart Kerry
Hugo Ricardo Sanchez Reategui
Yong Kim Olindo Savi Janusz Zalewski
Mark Laubach Hiroshi Sawano George Zimmerman
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 10 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)

:KHQWKH,(((6$6WDQGDUGV%RDUGDSSURYHGWKLVVWDQGDUGRQ0D\LWKDGWKHIROORZLQJ

PHPEHUVKLS
*DU\+RIIPDQ&KDLU
-RQ:DOWHU5RVGDKO9LFH&KDLU
-RKQ'.XOLFN3DVW&KDLU
.RQVWDQWLQRV.DUDFKDOLRV6HFUHWDU\
(GZDUG$$GG\ +RZDUG/L 0HKPHW8OHPD
'RXJ(GZDUGV 'DR]KXDQJ/LQ /HL:DQJ
5DP\$KPHG)DWK\ .HYLQ/X ).HLWK:DWHUV
-7UDYLV*ULIILWK 'DOHHS&0RKOD .DUO:HEHU
7KRPDV.RVK\ &KHQKXL1LX 6KD:HL
'DPLU1RYRVHO +RZDUG:ROIPDQ
-RVHSK/.RHSILQJHU
$QQHWWH5HLOO\
'DYLG-/DZ 'DLGL=KRQJ
'RURWK\6WDQOH\
0HPEHU(PHULWXV
&RS\ULJKW‹,((($OOULJKWVUHVHUYHG
---------------------- Page: 11 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
Introduction

This introduction is not part of IEEE Std 802.3cv-2021, IEEE Standard for Ethernet—Amendment 12 :

Maintenance #15: Power over Ethernet.

IEEE Std 802.3™ was first published in 1985. Since the initial publication, many projects have added

functionality or provided maintenance updates to the specifications and text included in the standard. Each

IEEE 802.3 project/amendment is identified with a suffix (e.g., IEEE Std 802.3ba™-2010).

The half duplex Media Access Control (MAC) protocol specified in IEEE Std 802.3-1985 is Carrier Sense

Multiple Access with Collision Detection (CSMA/CD). This MAC protocol was key to the experimental

Ethernet developed at Xerox Palo Alto Research Center, which had a 2.94 Mb/s data rate. Ethernet at

10 Mb/s was jointly released as a public specification by Digital Equipment Corporation (DEC), Intel and

Xerox in 1980. Ethernet at 10 Mb/s was approved as an IEEE standard by the IEEE Standards Board in 1983

and subsequently published in 1985 as IEEE Std 802.3-1985. Since 1985, new media options, new speeds of

operation, and new capabilities have been added to IEEE Std 802.3. A full duplex MAC protocol was added

in 1997.

Some of the major additions to IEEE Std 802.3 are identified in the marketplace with their project number.

This is most common for projects adding higher speeds of operation or new protocols. For example, IEEE

Std 802.3u™ added 100 Mb/s operation (also called Fast Ethernet), IEEE Std 802.3z added 1000 Mb/s

operation (also called Gigabit Ethernet), IEEE Std 802.3ae added 10 Gb/s operation (also called 10 Gigabit

Ethernet), IEEE Std 802.3ah™ specified access network Ethernet (also called Ethernet in the First Mile) and

IEEE Std 802.3ba added 40 Gb/s operation (also called 40 Gigabit Ethernet) and 100 Gb/s operation (also

called 100 Gigabit Ethernet). These major additions are all now included in and are superseded by IEEE St d

802.3-2018 and are not maintained as separate documents.

At the date of IEEE Std 802.3cv-2021 publication, IEEE Std 802.3 was composed of the following

documents:
IEEE Std 802.3-2018

Section One—Includes Clause 1 through Clause 20 and Annex A through Annex H and Annex 4A.

Section One includes the specifications for 10 Mb/s operation and the MAC, frame formats and service

interfaces used for all speeds of operation.

Section Two—Includes Clause 21 through Clause 33 and Annex 22A through Annex 33E. Sectio n

Two includes management attributes for multiple protocols and speed of operation as well as

specifications for providing power over twisted pair cabling for multiple operational speeds. It also

includes general information on 100 Mb/s operation as well as most of the 100 Mb/s Physical Layer

specifications.

Section Three—Includes Clause 34 through Clause 43 and Annex 36A through Annex 43C. Section

Three includes general information on 1000 Mb/s operation as well as most of the 1000 Mb/s Physical

Layer specifications.

Section Four—Includes Clause 44 through Clause 55 and Annex 44A through Annex 55B. Section

Four includes general information on 10 Gb/s operation as well as most of the 10 Gb/s Physical Layer

specifications.

Section Five—Includes Clause 56 through Clause 77 and Annex 57A through Annex 76A. Clause 56

through Clause 67 and Clause 75 through Clause 77, as well as associated annexes, specify subscriber

access and other Physical Layers and sublayers for operation from 512 kb/s to 10 Gb/s, and defines

Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 12 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)

services and protocol elements that enable the exchange of IEEE Std 802.3 format frames between

stations in a subscriber access network. Clause 68 specifies a 10 Gb/s Physical Layer specification.

Clause 69 through Clause 74 and associated annexes specify Ethernet operation over electrical

backplanes at speeds of 1000 Mb/s and 10 Gb/s.

Section Six—Includes Clause 78 through Clause 95 and Annex 83A through Annex 93C. Clause 78

specifies Energy-Efficient Ethernet. Clause 79 specifies IEEE 802.3 Organizationally Specific Link

Layer Discovery Protocol (LLDP) type, length, and value (TLV) information elements. Clause 80

through Clause 95 and associated annexes include general information on 40 Gb/s and 100 Gb/s

operation as well the 40 Gb/s and 100 Gb/s Physical Layer specifications. Clause 90 specifies Ethernet

support for time synchronization protocols.

Section Seven—Includes Clause 96 through Clause 115 and Annex 97A through Annex 115A.

Clause 96 through Clause 98, Clause 104, and associated annexes, specify Physical Layers and

optional features for 100 Mb/s and 1000 Mb/s operation over a single twisted pair. Clause 100 throug h

Clause 103, as well as associated annexes, specify Physical Layers for the operation of the EPON

protocol over coaxial distribution networks. Clause 105 through Clause 114 and associated annexes

include general information on 25 Gb/s operation as well as 25 Gb/s Physical Layer specifications.

Clause 99 specifies a MAC merge sublayer for the interspersing of express traffic. Clause 115 and its

associated annex specify a Physical Layer for 1000 Mb/s operation over plastic optical fiber.

Section Eight—Includes Clause 116 through Clause 126 and Annex 119A through Annex 120E.

Clause 116 through Clause 124 and associated annexes include general information on 200 Gb/s and

400 Gb/s operation as well the 200 Gb/s and 400 Gb/s Physical Layer specifications. Clause 125 and

Clause 126 include general information on 2.5 Gb/s and 5 Gb/s operation as well as 2.5 Gb/s and

5 Gb/s Physical Layer specifications.
IEEE Std 802.3cb™-2018

Amendment 1—This amendment includes changes to IEEE Std 802.3-2018 and its amendments, and

adds Clause 127 through Clause 130, Annex 127A, Annex 128A, Annex 128B, and Annex 130A. This

amendment adds new Physical Layers for operation at 2.5 Gb/s and 5 Gb/s over electrical backplanes.

IEEE Std 802.3bt™-2018

Amendment 2—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 145,

Annex 145A, Annex 145B, and Annex 145C. This amendment adds power delivery using all four pairs

in the structured wiring plan
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.