Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 7: Physical layer and management parameters for 400 Gb/s over multimode fiber

Télécommunications et échange entre systèmes informatiques — Exigences pour les réseaux locaux et métropolitains — Partie 3: Norme pour Ethernet — Amendement 7: Couche physique et paramètres de gestion pour 400 Gb/s sur fibres multimodales

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Published
Publication Date
28-Oct-2021
Current Stage
6060 - International Standard published
Start Date
29-Oct-2021
Completion Date
29-Oct-2021
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INTERNATIONAL ISO/IEC/
STANDARD IEEE
8802-3
Third edition
2021-02
AMENDMENT 7
2021-10
Telecommunications and exchange
between information technology
systems — Requirements for local and
metropolitan area networks —
Part 3:
Standard for Ethernet
AMENDMENT 7: Physical layer and
management parameters for 400 Gb/s
over multimode fiber
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
AMENDEMENT 7: Couche physique et paramètres de gestion pour
400 Gb/s sur fibres multimodales
Reference number
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
© ISO/IEC 2021
© IEEE 2020
---------------------- Page: 1 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
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© IEEE 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Foreword

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ISO/IEC/IEEE 8802-3:2021/Amd 7 was prepared by the LAN/MAN of the IEEE Computer Society (as

IEEE Std 802.3cm-2020) 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 series can be found on the ISO and IEC websites.

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Copyright © 2020 IEEE. All rights reserved. iii
---------------------- Page: 3 ----------------------
IEEE Std 802.3cm™-2020
(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,
and IEEE Std 802.3cq™-2020)
IEEE Standard for Ethernet
Amendment 7:
Physical Layer and Management
Parameters for 400 Gb/s over Multimode
Fiber
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 30 January 2020
IEEE SA Standards Board
---------------------- Page: 4 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)

Abstract: This amendment to IEEE Std 802.3-2018 adds Clause 150. This amendment adds

Physical Layer (PHY) specifications and management parameters for 400 Gb/s operation on four

pairs (400GBASE-SR4.2) and eight pairs (400GBASE-SR8) of multimode fiber, over reaches of at

least 100 m.
Keywords: 400 Gb/s Ethernet, 400 Gigabit Ethernet, 400GBASE-SR8, 400GBASE-SR4.2,

amendment, Energy Efficient Ethernet (EEE), Ethernet, Forward Error Correction (FEC), IEEE

802.3™, IEEE 802.3cd, IEEE 802.3cm, Physical Coding Sublayer (PCS), Physical Medium Attach-

ment (PMA) sublayer, Physical Medium Dependent (PMD) sublayer, Reconciliation Sublayer (RS),

multimode fiber (MMF)
This standard is dedicated to the memory of
our friend and colleague Jonathan P. King.
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2020 by The Institute of Electrical and Electronics Engineers, Inc.

All rights reserved. Published 30 March 2020. Printed in the United States of America.

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Electronics Engineers, Incorporated.
PDF: ISBN 978-1-5044-6436-9 STD24050
Print: ISBN 978-1-5044-6437-6 STDPD24050
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ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Participants

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

the IEEE P802.3cm Working Group ballot.
David J. Law, IEEE 802.3 Working Group Chair
Adam Healey, IEEE 802.3 Working Group Vice-Chair
Pete Anslow, IEEE 802.3 Working Group Secretary
Steven B. Carlson, IEEE 802.3 Working Group Executive Secretary
Valerie Maguire, IEEE 802.3 Working Group Treasurer
Robert Lingle, Jr., IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Chair

Jonathan P. King, IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Editor-in-Chief (Phase 1)

Jonathan D. Ingham, IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Editor (Phase 1)

Jonathan D. Ingham, IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Editor-in-Chief (Phase 2)

John Abbott Curtis Donahue Upen Kareti
Liang Du
David Abramson Yasuaki Kawatsu
Andrea Agnes Kathryn Dube
Yong Kim
Dale Amason Mike Dudek
Mark Kimber
Hongming An Marc Dupuis
Michael Klempa
Frank Effenberger
Jes Asmussen
Curtis Knittle
Richard Baca David Estes
Elizabeth Kochuparambil
Tim Baggett John Ewen
Wojciech Koczwara
Borhan Fathi Moghadam
Amrik Bains
Paul Kolesar
Vincent Ferretti
Thananya Baldwin
Taiji Kondo
Steven Baumgartner Brian Franchuk
Glen Kramer
Denis Beaudoin Matthias Fritsche
Olaf Krieger
Richard Frosch
Liav Ben-Artsi
Hans Lackner
Piergiorgio Beruto Shiyong Fu
Jeffrey Lapak
Vipul Bhatt Mike Gardner
Mark Laubach
Gao Bo Claude Gauthier
Han Hyub Lee
Ali Ghiasi
Brad Booth
June Hee Lee
Martin Bouda Joel Goergen
Alex Levin
David Brandt Zhigang Gong
Jon Lewis
Ralf-Peter Braun Steven Gorshe
Paul Brooks Jens Gottron David Li
Alan Brown Steffen Graber Mike-Peng Li
Matthew Brown Olaf Grau Jane Lim
Michal Brychta Robert Grow Alex Lin
Gary Burrell Mark Gustlin
Dekun Liu
Jairo Bustos Heredia Marek Hajduczenia
Hai-Feng Liu
Adrian Butter Hayden Haynes
Karen Liu
John Calvin Xiang He
Zhenyu Liu
Clark Carty Howard Heck
William Lo
Craig Chabot Brian Holden
Yuchun Lu
David Chalupsky Rita Horner
Miklos Lukacs
Bernd Horrmeyer
Frank Chang
Kent Lusted
Xin Chang Gergely Huszak
Ilya Lyubomirsky
Golam Choudhury Yasuhiro Hyakutake
Jeffery Maki
Keng Hua Chuang Kazuhiko Ishibe
David Malicoat
Kamal Dalmia Hideki Isono
Flavio Marques
John D’Ambrosia Tom Issenhuth
Arthur Marris
Piers Dawe Kenneth Jackson
Chris Mash
Fred Dawson Andrew Jimenez
Takeo Masuda
John Deandrea John Johnson
Kirsten Matheus
Gerrit den Besten Chad Jones
Erdem Matoglu
Claudio DeSanti Peter Jones
Marco Mazzini
Chris Diminico Lokesh Kabra
Hormoz Djahanshahi Manabu Kagami Mick McCarthy
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 9 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Brett Mcclellan Alexander Rysin Ed Ulrichs
Toshiaki Sakai
Larry McMillan Alexander Umnov
Greg McSorley Hamid Salehi Ricky Vernickel
Richard Mellitz Sam Sambasivan Marco Vitali
Martin Miller Edward Sayre Robert Voss
Toshiyuki Moritake James Schuessler Dylan Walker
Steve Sekel
Thomas Mueller Haifei Wang
Edward Nakamoto Masood Shariff Roy Wang
Paul Neveux Mizuki Shirao Tongtong Wang
Gary Nicholl Jialong Shuai Xinyuan Wang
Shawn Nicholl Jeff Slavick Xuehuan Wang
John Nolan Daniel Smith Christoph Wechsler
Kevin Noll Scott Sommers Brian Welch
Mark Nowell Tom Souvignier Matthias Wendt
David Ofelt Bryan Sparrowhawk Natalie Wienckowski
Edward Sprague
Josef Ohni James Withey
Tom Palkert Peter Stassar Mau-Lin Wu
Sujan Pandey Heath Stewart Peter Wu
Carlos Pardo David Stover Markus Wucher
Earl Parsons Junqing Sun Dayin Xu
Gerald Pepper Liyang Sun Yu Xu
Phong Pham Steve Swanson Shuto Yamamoto
David Piehler Bharat Tailor Adrian Young
Rick Pimpinella Tomoo Takahara James Young
Christopher Pohl Kohichi Tamura Lennart Yseboodt
William Powell Mehmet Tazebay Andrew Zambell
Dino Pozzebon Ronald Tellas Conrad Zerna
Rick Rabinovich Geoffrey Thompson Richard (Yujia) Zhou
Zvi Rechtman Pirooz Tooyserkani Yan Zhuang
Alon Regev Martin Zielinski
Nathan Tracy
Duane Remein David Tremblay George Zimmerman
Victor Renteria Stephen Trowbridge Pavel Zivny
Salvatore Rotolo Ta Chin Tseng Harald Zweck

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

voted for approval, disapproval, or abstention.
John Abbott Marek Hajduczenia Michael Lynch
Thomas Alexander Adam Healey Valerie Maguire
Peter Anslow Marco Hernandez Jeffery Maki
Butch Anton David Hess
David Malicoat
Ralf-Peter Braun Werner Hoelzl Arthur Marris
Nancy Bravin Oliver Holland Brett Mcclellan
Demetrio Bucaneg, Jr. Rita Horner Richard Mellitz
Jairo Bustos Heredia Yasuhiro Hyakutake
Tremont Miao
William Byrd Atsushi Ito Jose Morales
Steven B. Carlson Raj Jain Paul Neveux
Clark Carty SangKwon Jeong Gary Nicholl
Chan Chen Lokesh Kabra NickS .A. Nikjoo
Piers Dawe Manabu Kagami Paul Nikolich
John Deandrea Piotr Karocki Satoshi Obara
Stephen Didde Stuart Kerry Thomas Palkert
Christopher Diminico Yongbum Kim Carlos Pardo
Michael Dudek Paul Kolesar
Earl Parsons
Avraham Freedman Mark Laubach Bansi Patel
Matthias Fritsche David Law Dev Paul
Devon Gayle Hyeong Ho Lee David Piehler
Ali Ghiasi David Lewis Rick Pimpinella
Zhigang Gong Jon Lewis Adee Ran
Randall Groves Robert Lingle R. .K Rannow
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 10 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Alon Regev Walter Struppler Alexander Umnov
Maximilian Riegel Mitsutoshi Sugawara Dmitri Varsanofiev
Robert Robinson Satoshi Takahashi George Vlantis
Benjamin Rolfe David Tepen Lisa Ward
Toshiaki Sakai James Theodoras Keith Waters
Dieter Schicketanz David Thompson Andreas Wolf
James Schuessler Nathan Tracy Peter Wu
James Young
Thomas Starai David Tremblay
Peter Stassar Mark-Rene Uchida Oren Yuen

When the IEEE-SA Standards Board approved this standard on 30 January 2020, it had the following

membership:
Gary Hoffman, Chair
Vacant Position, Vice Chair
Jean-Philippe Faure, Past Chair
Konstantinos Karachalios, Secretary
Ted Burse Howard Li Dorothy Stanley
J. Travis Griffith Dong Liu Mehmet Ulema
Grace Gu Kevin Lu Lei Wang
Guido R. Hiertz Paul Nikolich Sha Wei
Joseph L. Koepfinger* Damir Novosel Philip B. Winston
Jon Walter Rosdahl Daidi Zhong
John D. Kulick
David J. Law Jingyi Zhou
*Member Emeritus
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 11 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Introduction

This introduction is not part of IEEE Std 802.3cm-2020, IEEE Standard for Ethernet. Amendment 7: Physical Layer

and Management Parameters for 400 Gb/s over Multimode Fiber.

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

tionality 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 oper-

ation (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 Std

802.3-2018 and are not maintained as separate documents.

At the date of IEEE Std 802.3cm-2020 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. Section

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

tions 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 specifica-

tions.

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 ser-

Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 12 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)

vices and protocol elements that enable the exchange of IEEE Std 802.3 format frames between sta-

tions 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 back-

planes 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 opera-

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

port 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 through

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

tocol 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 ex
...

FINAL
ISO/IEC/IEEE
AMENDMENT
DRAFT
8802-3:2021
FDAM 7
ISO/IEC JTC 1/SC 6
Telecommunications and exchange
Secretariat: KATS
between information technology
Voting begins on:
2021-04-21 systems — Requirements for local and
metropolitan area networks —
Voting terminates on:
2021-09-08
Part 3:
Standard for Ethernet
AMENDMENT 7: Physical layer and
management parameters for 400 Gb/s
over multimode fiber
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
AMENDEMENT 7
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 7:2021(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-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. IEEE 2020
---------------------- Page: 1 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 7:2021(E)
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Published in Switzerland
ii © IEEE 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC/IEEE 8802-3:2021/FDAM 7:2021(E)
Foreword

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

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

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

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ISO/IEC/IEEE 8802-3:2021/Amd 7 was prepared by the LAN/MAN of the IEEE Computer Society (as

IEEE Std 802.3cm-2020) and drafted in accordance with its editorial rules. It was adopted, under the

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

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A list of all parts in the ISO/IEC/IEEE 8802 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-

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Copyright © 2020 IEEE. All rights reserved. iii
---------------------- Page: 3 ----------------------
IEEE Std 802.3cm™-2020
(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,
and IEEE Std 802.3cq™-2020)
IEEE Standard for Ethernet
Amendment 7:
Physical Layer and Management
Parameters for 400 Gb/s over Multimode
Fiber
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 30 January 2020
IEEE SA Standards Board
---------------------- Page: 4 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)

Abstract: This amendment to IEEE Std 802.3-2018 adds Clause 150. This amendment adds

Physical Layer (PHY) specifications and management parameters for 400 Gb/s operation on four

pairs (400GBASE-SR4.2) and eight pairs (400GBASE-SR8) of multimode fiber, over reaches of at

least 100 m.
Keywords: 400 Gb/s Ethernet, 400 Gigabit Ethernet, 400GBASE-SR8, 400GBASE-SR4.2,

amendment, Energy Efficient Ethernet (EEE), Ethernet, Forward Error Correction (FEC), IEEE

802.3™, IEEE 802.3cd, IEEE 802.3cm, Physical Coding Sublayer (PCS), Physical Medium Attach-

ment (PMA) sublayer, Physical Medium Dependent (PMD) sublayer, Reconciliation Sublayer (RS),

multimode fiber (MMF)
This standard is dedicated to the memory of
our friend and colleague Jonathan P. King.
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2020 by The Institute of Electrical and Electronics Engineers, Inc.

All rights reserved. Published 30 March 2020. Printed in the United States of America.

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PDF: ISBN 978-1-5044-6436-9 STD24050
Print: ISBN 978-1-5044-6437-6 STDPD24050
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written permission of the publisher.
---------------------- Page: 5 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
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Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 8 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Participants

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

the IEEE P802.3cm Working Group ballot.
David J. Law, IEEE 802.3 Working Group Chair
Adam Healey, IEEE 802.3 Working Group Vice-Chair
Pete Anslow, IEEE 802.3 Working Group Secretary
Steven B. Carlson, IEEE 802.3 Working Group Executive Secretary
Valerie Maguire, IEEE 802.3 Working Group Treasurer
Robert Lingle, Jr., IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Chair

Jonathan P. King, IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Editor-in-Chief (Phase 1)

Jonathan D. Ingham, IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Editor (Phase 1)

Jonathan D. Ingham, IEEE P802.3cm 400 Gb/s over Multimode Fiber Task Force Editor-in-Chief (Phase 2)

John Abbott Curtis Donahue Upen Kareti
Liang Du
David Abramson Yasuaki Kawatsu
Andrea Agnes Kathryn Dube
Yong Kim
Dale Amason Mike Dudek
Mark Kimber
Hongming An Marc Dupuis
Michael Klempa
Frank Effenberger
Jes Asmussen
Curtis Knittle
Richard Baca David Estes
Elizabeth Kochuparambil
Tim Baggett John Ewen
Wojciech Koczwara
Borhan Fathi Moghadam
Amrik Bains
Paul Kolesar
Vincent Ferretti
Thananya Baldwin
Taiji Kondo
Steven Baumgartner Brian Franchuk
Glen Kramer
Denis Beaudoin Matthias Fritsche
Olaf Krieger
Richard Frosch
Liav Ben-Artsi
Hans Lackner
Piergiorgio Beruto Shiyong Fu
Jeffrey Lapak
Vipul Bhatt Mike Gardner
Mark Laubach
Gao Bo Claude Gauthier
Han Hyub Lee
Ali Ghiasi
Brad Booth
June Hee Lee
Martin Bouda Joel Goergen
Alex Levin
David Brandt Zhigang Gong
Jon Lewis
Ralf-Peter Braun Steven Gorshe
Paul Brooks Jens Gottron David Li
Alan Brown Steffen Graber Mike-Peng Li
Matthew Brown Olaf Grau Jane Lim
Michal Brychta Robert Grow Alex Lin
Gary Burrell Mark Gustlin
Dekun Liu
Jairo Bustos Heredia Marek Hajduczenia
Hai-Feng Liu
Adrian Butter Hayden Haynes
Karen Liu
John Calvin Xiang He
Zhenyu Liu
Clark Carty Howard Heck
William Lo
Craig Chabot Brian Holden
Yuchun Lu
David Chalupsky Rita Horner
Miklos Lukacs
Bernd Horrmeyer
Frank Chang
Kent Lusted
Xin Chang Gergely Huszak
Ilya Lyubomirsky
Golam Choudhury Yasuhiro Hyakutake
Jeffery Maki
Keng Hua Chuang Kazuhiko Ishibe
David Malicoat
Kamal Dalmia Hideki Isono
Flavio Marques
John D’Ambrosia Tom Issenhuth
Arthur Marris
Piers Dawe Kenneth Jackson
Chris Mash
Fred Dawson Andrew Jimenez
Takeo Masuda
John Deandrea John Johnson
Kirsten Matheus
Gerrit den Besten Chad Jones
Erdem Matoglu
Claudio DeSanti Peter Jones
Marco Mazzini
Chris Diminico Lokesh Kabra
Hormoz Djahanshahi Manabu Kagami Mick McCarthy
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 9 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Brett Mcclellan Alexander Rysin Ed Ulrichs
Toshiaki Sakai
Larry McMillan Alexander Umnov
Greg McSorley Hamid Salehi Ricky Vernickel
Richard Mellitz Sam Sambasivan Marco Vitali
Martin Miller Edward Sayre Robert Voss
Toshiyuki Moritake James Schuessler Dylan Walker
Steve Sekel
Thomas Mueller Haifei Wang
Edward Nakamoto Masood Shariff Roy Wang
Paul Neveux Mizuki Shirao Tongtong Wang
Gary Nicholl Jialong Shuai Xinyuan Wang
Shawn Nicholl Jeff Slavick Xuehuan Wang
John Nolan Daniel Smith Christoph Wechsler
Kevin Noll Scott Sommers Brian Welch
Mark Nowell Tom Souvignier Matthias Wendt
David Ofelt Bryan Sparrowhawk Natalie Wienckowski
Edward Sprague
Josef Ohni James Withey
Tom Palkert Peter Stassar Mau-Lin Wu
Sujan Pandey Heath Stewart Peter Wu
Carlos Pardo David Stover Markus Wucher
Earl Parsons Junqing Sun Dayin Xu
Gerald Pepper Liyang Sun Yu Xu
Phong Pham Steve Swanson Shuto Yamamoto
David Piehler Bharat Tailor Adrian Young
Rick Pimpinella Tomoo Takahara James Young
Christopher Pohl Kohichi Tamura Lennart Yseboodt
William Powell Mehmet Tazebay Andrew Zambell
Dino Pozzebon Ronald Tellas Conrad Zerna
Rick Rabinovich Geoffrey Thompson Richard (Yujia) Zhou
Zvi Rechtman Pirooz Tooyserkani Yan Zhuang
Alon Regev Martin Zielinski
Nathan Tracy
Duane Remein David Tremblay George Zimmerman
Victor Renteria Stephen Trowbridge Pavel Zivny
Salvatore Rotolo Ta Chin Tseng Harald Zweck

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

voted for approval, disapproval, or abstention.
John Abbott Marek Hajduczenia Michael Lynch
Thomas Alexander Adam Healey Valerie Maguire
Peter Anslow Marco Hernandez Jeffery Maki
Butch Anton David Hess
David Malicoat
Ralf-Peter Braun Werner Hoelzl Arthur Marris
Nancy Bravin Oliver Holland Brett Mcclellan
Demetrio Bucaneg, Jr. Rita Horner Richard Mellitz
Jairo Bustos Heredia Yasuhiro Hyakutake
Tremont Miao
William Byrd Atsushi Ito Jose Morales
Steven B. Carlson Raj Jain Paul Neveux
Clark Carty SangKwon Jeong Gary Nicholl
Chan Chen Lokesh Kabra NickS .A. Nikjoo
Piers Dawe Manabu Kagami Paul Nikolich
John Deandrea Piotr Karocki Satoshi Obara
Stephen Didde Stuart Kerry Thomas Palkert
Christopher Diminico Yongbum Kim Carlos Pardo
Michael Dudek Paul Kolesar
Earl Parsons
Avraham Freedman Mark Laubach Bansi Patel
Matthias Fritsche David Law Dev Paul
Devon Gayle Hyeong Ho Lee David Piehler
Ali Ghiasi David Lewis Rick Pimpinella
Zhigang Gong Jon Lewis Adee Ran
Randall Groves Robert Lingle R. .K Rannow
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 10 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Alon Regev Walter Struppler Alexander Umnov
Maximilian Riegel Mitsutoshi Sugawara Dmitri Varsanofiev
Robert Robinson Satoshi Takahashi George Vlantis
Benjamin Rolfe David Tepen Lisa Ward
Toshiaki Sakai James Theodoras Keith Waters
Dieter Schicketanz David Thompson Andreas Wolf
James Schuessler Nathan Tracy Peter Wu
James Young
Thomas Starai David Tremblay
Peter Stassar Mark-Rene Uchida Oren Yuen

When the IEEE-SA Standards Board approved this standard on 30 January 2020, it had the following

membership:
Gary Hoffman, Chair
Vacant Position, Vice Chair
Jean-Philippe Faure, Past Chair
Konstantinos Karachalios, Secretary
Ted Burse Howard Li Dorothy Stanley
J. Travis Griffith Dong Liu Mehmet Ulema
Grace Gu Kevin Lu Lei Wang
Guido R. Hiertz Paul Nikolich Sha Wei
Joseph L. Koepfinger* Damir Novosel Philip B. Winston
Jon Walter Rosdahl Daidi Zhong
John D. Kulick
David J. Law Jingyi Zhou
*Member Emeritus
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 11 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)
Introduction

This introduction is not part of IEEE Std 802.3cm-2020, IEEE Standard for Ethernet. Amendment 7: Physical Layer

and Management Parameters for 400 Gb/s over Multimode Fiber.

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

tionality 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 oper-

ation (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 Std

802.3-2018 and are not maintained as separate documents.

At the date of IEEE Std 802.3cm-2020 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. Section

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

tions 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 specifica-

tions.

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 ser-

Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 12 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.7:2021(E)

vices and protocol elements that enable the exchange of IEEE Std 802.3 format frames between sta-

tions 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 back-

planes 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 opera-

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

port 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 featu
...

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