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

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
• ICS: 35.110 - Networking
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 6060 - International Standard published
• Start Date: 17-Oct-2022
• Due Date: 21-Oct-2023
• Completion Date: 17-Oct-2022

Relations

• Amends: ISO/IEC/IEEE 8802-3:2021 - Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet
• Effective Date: 06-Jun-2022

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

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ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
Foreword
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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,
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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

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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
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ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
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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
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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
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ISO/IEC/IEEE 8802-3:2021/Amd.12:2022(E)
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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
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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)
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Published in Switzerland
ii

© 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
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ISO and IEC technical committees collaborate in fields of mutual interest. Other international
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The procedures used to develop this document and those intended for its further maintenance are
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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
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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
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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.
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Electronics Engineers, Incorporated.
PDF: ISBN 978-1-5044-7556-3 STD24692
Print: ISBN 978-1-5044-7557-0 STDPD24692
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written permission of the publisher.

---------------------- Page: 5 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
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ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
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---------------------- Page: 7 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
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5
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---------------------- 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
6
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
7
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---------------------- Page: 10 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 12:2022(E)
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---------------------- 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
9
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---------------------- 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
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