Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 3: Media access control parameters for 50 Gb/s and physical layers and management parameters for 50 Gb/s, 100 Gb/s, and 200 Gb/s operation

Télécommunications et échange entre systèmes informatiques — Exigences pour les réseaux locaux et métropolitains — Partie 3: Norme pour Ethernet — Amendement 3: Paramètres de commande d'accès media pour 50 Gb/s et couches physiques et paramètres de gestion pour fonctionnement à 50 Gb/s, 100 Gb/s et 200 Gb/s

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Telecommunications and exchange
Secretariat: KATS
between information technology
Voting begins on:
2021-06-24 systems — Requirements for local and
metropolitan area networks —
Voting terminates on:
Part 3:
Standard for Ethernet
AMENDMENT 3: Media access control
parameters for 50 Gb/s and physical
layers and management parameters
for 50 Gb/s, 100 Gb/s, and 200 Gb/s
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
Reference number
ISO/IEC/IEEE 8802-3:2021/FDAM 3:2021(E)

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ISO/IEC/IEEE 8802-3:2021/FDAM 3:2021(E)

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ISO/IEC/IEEE 8802-3:2021/FDAM 3:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.3 was prepared by the LAN/MAN of the IEEE Computer Society (as
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IEEE Std 802.3cd™-2018
(Amendment to IEEE Std 802.3™-2018
as amended by IEEE Std 802.3cb™-2018
and IEEE Std 802.3bt™-2018)
IEEE Standard for Ethernet
Amendment 3:
Media Access Control Parameters 
for 50 Gb/s and Physical Layers and
Management Parameters for 50 Gb/s,
100 Gb/s, and 200 Gb/s Operation
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 5 December 2018
IEEE-SA Standards Board

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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
Abstract: Clause 131 through Clause 140 and Annex 135A through Annex 136D are added t o
IEEE Std 802.3-2018 by this amendment to specify IEEE 802.3 Media Access Control (MAC)
parameters, Physical Layer specifications, and management parameters for the transfer of IEEE
802.3 format frames at 50 Gb/s, 100 Gb/s, and 200 Gb/s.
Keywords: 50GAUI-1, 50GAUI-2, 50GBASE-CR, 50GBASE-FR, 50GBASE-KR, 50GBASE-LR,
50GBASE-SR, 50 Gigabit Ethernet, 50GMII, 100GAUI-2, 100GAUI-4, 100GBASE-CR2,
100GBASE-DR, 100GBASE-KR2, 100GBASE-SR2, 100 Gigabit Ethernet, 200GBASE-CR4,
200GBASE-KR4, 200GBASE-SR4, 200 Gigabit Ethernet, amendment, EEE, Energy-Efficien t
Ethernet, Ethernet, FEC, forward error correction, IEEE 802.3™, IEEE 802.3cd™, LAUI-2, MMF,
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2019 by The Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 15 February 2019. Printed in the United States of America.
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Electronics Engineers, Incorporated.
PDF: ISBN 978-1-5044-5357-8 STD23441
Print: ISBN 978-1-5044-5358-5 STDPD23441
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of the publisher.

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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
The following individuals were officers and members of the IEEE 802.3 Working Group at the beginning of
the IEEE P802.3cd 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
Mark Nowell, IEEE P802.3cd Task Force Chair
Matt Brown, IEEE P802.3cd Task Force Editor-in-Chief
Arthur Marris, IEEE P802.3cd Task Force Editor
Gary Nicholl, IEEE P802.3cd Task Force Editor
Adee Ran, IEEE P802.3cd Task Force Editor
Jonathan King, IEEE P802.3cd Task Force Editor
Peter Stassar, IEEE P802.3cd Task Force Editor
Justin Abbott Eric DiBiaso Andrew Jimenez
David Abramson John Dillard
John Johnson
Dale Amason Chris Diminico
Chad Jones
Curtis Donahue
Eric Baden
Peter Jones
Amrik Bains Michael Dudek
Upen Kareti
Thananya Baldwin Frank Effenberger
Yasuaki Kawatsu
Denis Beaudoin John Ewen
Yongbum Kim
Christian Beia Ramin Farjad
Mark Kimber
Vipul Bhatt Shahar Feldman
Scott Kipp
Matthias Fritsche
William Bliss
Michael Klempa
Mark Bohm Richard Frosch
Curtis Knittle
Brad Booth Andrew Gardner
Shigeru Kobayashi
Martin Bouda Ali Ghiasi
Paul Kolesar
David Brandt Steven Gorshe
Toshihiko Kusano
Ralf-Peter Braun Steffen Graber
Hans Lackner
Theodore Brillhart Olaf Grau
Paul Brooks Robert M. Grow Jeffrey Lapak
Phillip Brownlee Yong Guo Mark Laubach
Chris Bullock Mark Gustlin Greg Le Cheminant
Jairo Bustos Heredia Marek Hajduczenia
Hanan Leizerovich
Adrian Butter Tomohiro Hashimoto
David Lewis
Anthony Calbone Akinori Hayakawa
Jon Lewis
Clark Carty Rajmohan Hegde
Mike Peng Li
Craig Chabot David Hess
Robert Lingle
Mandeep Chadha Yasuo Hidaka
Hai-Feng Liu
David Chalupsky David Hoglund
Zhenyu Liu
Jacky Chang Rita Horner
Moiz Lokhandwala
Xin Chang Bernd Horrmeyer
Miklos Lukacs
Chan Chen Xi Huang
Kent Lusted
Weiying Cheng Xingang Huang
Zahy Madgar
Golam Choudhury Yasuhiro Hyakutake
Jeffery Maki
Keng Hua Chuang Jonathan Ingham
David Malicoat
Christopher R. Cole Kazuhiko Ishibe
Takeo Masuda
John D’Ambrosia Hideki Isono
Piers J. G. Dawe Kirsten Matheus
Tom Issenhuth
Fred Dawson Kenneth Jackson Erdem Matoglu
Not a member of the IEEE 802.3 working group at the beginning of the working group ballot.
Copyright © 2019 IEEE. All rights reserved.

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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
Mick McCarthy Alon Regev Yoshihiro Tsukamoto
Brett McClellan Duane Remein Ed Ulrichs
Thomas McDermott Salvatore Rotolo
Alexander Umnov
John McDonough Sam Sambasivan
Sterling A. Vaden
Larry McMillan Edward Sayre
Stefano Valle
Greg McSorley Fred Schindler
Paul Vanderlaan
Marcel Medina Masood Shariff
Dylan Walker
Richard Mei Kapil Shrikhande
Roy Wang
Richard Mellitz Jeff Slavick
Tongtong Wang
Phil Miguelez Daniel Smith
Xinyuan Wang
Paul Mooney Scott Sommers
Matthias Wendt
Ron Muir Dale Murray Yoshiaki Sone
Oded Wertheim
Henry Muyshondt Bryan Sparrowhawk
Natalie Wienckowski
Edward Nakamoto Atul Srivastava
Ludwig Winkel
Kevin Noll Heath Stewart
Peter Wu
David Ofelt David Stover
Dayin Xu
Thomas Palkert Ken-Ichi Suzuki
Yu Xu
Sujan Pandey Steve Swanson
Lennart Yseboodt
Andre Szczepanek
Sesha Panguluri
Hayato Yuki
Earl Parsons William Szeto
Andrew Zambell
Wanquan Peng Bharat Tailor
Huanlin Zhang
Ruben Perez De Aranda Alonso Takayuki Tajima
Qiwen Zhong
Michael Peters Tomoo Takahara
Yan Zhuang
Jean Picard Kohichi Tamura
George Zimmerman
David Piehler Nathan Tracy
Helge Zinner
Rick Pimpinella Matthew Traverso
David Tremblay Pavel Zivny
William Powell
Rick Rabinovich Stephen Trowbridge
The following members of the individual balloting committee voted on this amendment. Balloters may have
voted for approval, disapproval, or abstention.
Thomas Alexander Brian Franchuk Hyeong Ho Lee
Richard Alfvin Avraham Freedman Hanan Leizerovich
Arne Alping Yukihiro Fujimoto David Lewis
Pete Anslow Zhigang Gong Jon Lewis
Butch Anton Eric W. Gray Robert Lingle
Eric Baden Randall Groves Hai-Feng Liu
Mark Gustlin
John Ballingall Kent Lusted
Ralf-Peter Braun Adam Healey Michael Lynch
Nancy Bravin Marco Hernandez Elvis Maculuba
Theodore Brillhart David Hess Valerie Maguire
Matt Brown Yasuo Hidaka Jeffery Maki
Demetrio Bucaneg Werner Hoelzl Arthur Marris
Gary Burrell Rita Horner Michael Maytum
Jairo Bustos Heredia Noriyuki Ikeuchi Mick McCarthy
William Byrd Sergiu Iordanescu Brett McClellan
John Calvin Osamu Ishida Thomas McDermott
Steven B. Carlson Atsushi Ito Richard Mellitz
Juan Carreon Raj Jain Tremont Miao
Clark Carty SangKwon Jeong Charles Moorwood
Chan Chen Peter Jones Rick Murphy
Keith Chow Manabu Kagami Michael Newman
Keng Hua Chuang Piotr Karocki Charles Ngethe
Charles Cook Stuart Kerry Gary Nicholl
Piers J. G. Dawe Yongbum Kim Nick S. A. Nikjoo
Stephen Didde Jonathan King Mark Nowell
Michael Dudek Paul Kolesar Satoshi Obara
Sourav Dutta Mark Laubach Thomas Palkert
Jason Ellison David J. Law Bansi Patel
Copyright © 2019 IEEE. All rights reserved.

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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
Arumugam Paventhan Peter Stassar Dmitri Varsanofiev
Michael Peters Robert Stone George Vlantis
David Piehler Walter Struppler Khurram Waheed
Rick Pimpinella Mitsutoshi Sugawara Lisa Ward
Adee Ran Junqing Sun Keith Waters
R. K. Rannow Patrik Sundstrom Oded Wertheim
Alon Regev Andre Szczepanek Andreas Wolf
Maximilian Riegel Kohichi Tamura Chun Yu Charles Wong
Robert Robinson David Thompson Peter Wu
Alexander Rysin Geoffrey Thompson Xin Wu
Toshiaki Sakai Michael Thompson Jun Xu
Kapil Shrikhande David Tremblay Adrian Young
Jason Shriver Stephen Trowbridge Oren Yuen
Jeff Slavick Mark-Rene Uchida Andrew Zambell
Daniel Smith Alexander Umnov Zhen Zhou
Thomas Starai Paul Vanderlaan Pavel Zivny
When the IEEE-SA Standards Board approved this amendment on 5 December 2018, it had the following
Jean-Philippe Faure, Chair
Gary Hoffman, Vice Chair
John D. Kulick, Past Chair
Konstantinos Karachalios, Secretary
Ted Burse
Xiaohui Liu Robby Robson
Guido R. Hiertz Dorothy Stanley
Kevin Lu
Christel Hunter Daleep Mohla Mehmet Ulema
Phil Wennblom
Joseph L. Koepfinger* Andrew Myles
Thomas Koshy Paul Nikolich Philip Winston
Howard Wolfman
Hung Ling Ronald C. Petersen
Annette D. Reilly Jingyi Zhou
Dong Liu
*Member Emeritus
Copyright © 2019 IEEE. All rights reserved.

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ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
This introduction is not part of IEEE Std 802.3cd-2018, IEEE Standard for Ethernet. Amendment 3: Media Access
Control Parameters for 50 Gb/s and Physical Layers and Management Parameters for 50 Gb/s, 100 Gb/s, and
200 Gb/s Operation.
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 o f
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 publication for IEEE Std 802.3cd-2018, IEEE Std 802.3 was composed of the following
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 servic e
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
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
Section Three—Includes Clause 34 through Clause 43 and Annex 36A through Annex 43C. Sectio n
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. Sectio n
Four includes general information on 10 Gb/s operation as well as most of the 10 Gb/s Physical Layer
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
Copyright © 2019 IEEE. All rights reserved.

---------------------- Page: 12 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.3:2021(E)
access and other Physical Layers and sublayers for operation from 512 kb/s to 10 Gb/s, and defines
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 as 40 Gb/s and 100 Gb/s Physical Layer specifications. Clause 90 specifies Ethernet
support for

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