Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 10: Maintenance #14: Isolation

Télécommunications et échange entre systèmes informatiques — Exigences pour les réseaux locaux et métropolitains — Partie 3: Norme pour Ethernet — Amendement 10: Maintenance n° 14 : Isolation

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ISO/IEC/IEEE 8802-3:2021/Amd 10:2022 - Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 10: Maintenance #14: Isolation Released:8. 07. 2022
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Third edition
Telecommunications and exchange
between information technology
systems — Requirements for local and
metropolitan area networks —
Part 3:
Standard for Ethernet
AMENDMENT 10: Maintenance #14:
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
AMENDEMENT 10: Maintenance n° 14 : Isolation
Reference number
ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
© IEEE 2021
---------------------- Page: 1 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
© IEEE 2021

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ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)

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ISO/IEC/IEEE 8802-3:2021/Amd 10 was prepared by the LAN/MAN of the IEEE Computer Society

(as IEEE 802.3cr -2021) 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, Subcommittee SC 6, Telecommunications and information exchange between systems.

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ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
IEEE Std 802.3cr™-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,
and IEEE Std 802.3ca™-2020)
IEEE Standard for Ethernet
Amendment 10:
Maintenance #14: Isolation
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 9 February 2021
IEEE SA Standards Board
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 4 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)

Abstract: This amendment to IEEE Std 802.3-2018 replaces references to the IEC 60950 series

of standards with appropriate references to the IEC 62368 series and makes appropriate changes

to the standard corresponding to the new references.

Keywords: Ethernet, IEC 60950, IEC 62368, IEEE 802.3™, IEEE 802.3cr™, isolation, safety

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PDF: ISBN 978-1-5044-7381-1 STD24601
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ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)

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

the IEEE P802.3cr 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
Jon Lewis, IEEE P802.3cr Maintenance #14: Isolation Task Force Chair and Editor
David Abramson Marek Hajduczenia Mick McCarthy
Howard Heck
Pete Anslow Brett McClellan
Brian Holden Larry McMillan
Michikazu Aono
Nobuyasu Araki Bernd Horrmeyer Richard Mellitz
Tim Baggett Yasuhiro Hyakutake Shimon Muller
Jonathan Ingham
Thananya Baldwin James Nadolny
Kazuhiko Ishibe Edward Nakamoto
Steven Baumgartner
Denis Beaudoin Hideki Isono Paul Neveux
Gitesh Bhagwat Tom Issenhuth Gary Nicholl
Hiroaki Ito Shawn Nicholl
Rich Boyer
David Brandt Kenneth Jackson Kevin Noll
Ralf-Peter Braun Andrew Jimenez Mark Nowell
Theodore Brillhart John Johnson David Ofelt
Chad Jones Ryo Okabe
Paul Brooks
Matthew Brown Peter Jones Tom Palkert
Jairo Bustos Heredia Lokesh Kabra Carlos Pardo
Adrian Butter Haysam Kadry Earl Parsons
Manabu Kagami Gerald Pepper
Clark Carty
David Chalupsky Upen Kareti David Piehler
Jacky Chang Athanasios Kasapi Fabio Pittala
Xin Chang Yong Kim Christopher Pohl
Mark Kimber William Powell
Chan Chen
Golam Choudhury Michael Klempa Rick Rabinovich
Keng Hua Chuang Curtis Knittle Parthasarathy Raju
John D'Ambrosia Elizabeth Kochuparambil Adee Ran
Sam Kocsis Alon Regev
Piers Dawe
Fred Dawson Wojciech Koczwara Duane Remein
Gerrit den Besten Paul Kolesar Victor Renteria
Claudio DeSanti Taiji Kondo Thomas Rettig
Curtis Donahue Daniel Koppermueller Hamid Salehi
Liang Du Glen Kramer Sam Sambasivan
Kathryn Dube Taketo Kumada Edward Sayre
Hans Lackner Matthew Schmitt
Frank Effenberger
David Estes Frank Lambrecht Hossein Sedarat
John Ewen Mark Laubach Masood Shariff
Vincent Ferretti Greg Le Cheminant Masato Shiino
Jon Lewis Ramin Shirani
Brian Franchuk
Matthias Fritsche Mike-Peng Li Kapil Shrikhande
Takashi Fukuoka Alex Lin Jeff Slavick
Ali Ghiasi Hai-Feng Liu Scott Sommers
William Lo Edward Sprague
Joel Goergen
Steven Gorshe Kent Lusted Peter Stassar
Hideki Goto Jeffery Maki Heath Stewart
Steffen Graber David Malicoat Junqing Sun
Eric Maniloff Steve Swanson
Olaf Grau
Robert Grow Flavio Marques Tomoo Takahara
Martin Gubow Arthur Marris Satoshi Takahashi
Mark Gustlin Takeo Masuda Tadashi Takahashi
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 9 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)
Kazuya Takayama Ed Ulrichs Peter Wu
Dayin Xu
Michael Takefman Alexander Umnov
Yu Xu
Masaru Terada Edward Walter
Lennart Yseboodt
Geoffrey Thompson Roy Wang
Conrad Zerna
Pirooz Tooyserkani Xuehuan Wang
Xingxin Zhang
Nathan Tracy Dong Wei
Chunhui Zhu
David Tremblay Matthias Wendt
Yan Zhuang
Stephen Trowbridge Natalie Wienckowski
Martin Zielinski
Mike Tu Dance Wu
George Zimmerman

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

voted for approval, disapproval, or abstention.
Peter Jones
Robert Aiello R. K. Rannow
Robert Robinson
Thomas Alexander Lokesh Kabra
Toshiaki Sakai
Rich Boyer Piotr Karocki
Frank Schewe
Ralf-Peter Braun Stuart Kerry
Heath Stewart
Theodore Brillhart Yong Kim
Mitsutoshi Sugawara
Jairo Bustos Heredia Taiji Kondo
Geoffrey Thompson
William Byrd Mark Laubach
Michael Thompson
David J. Law
Steven B. Carlson
David Tremblay
Juan Carreon Hyeong Ho Lee
Mark-Rene Uchida
Clark Carty Jon Lewis
George Vlantis
Pin Chang Michael Lynch
Lisa Ward
Chan Chen Valerie Maguire
Keith Waters
Avraham Freedman Jeffery Maki
James Weaver
Matthias Fritsche Michael Maytum
Karl Weber
Robert Grow Brett McClellan
Matthias Wendt
Stephen Haddock Jonathon Mclendon
Natalie Wienckowski
Marek Hajduczenia Richard Mellitz
Scott Willy
Adam Healey Tremont Miao
Chun Yu Charles Wong
Marco Hernandez Nick S.A. Nikjoo
Peter Wu
David Hess Paul Nikolich
James Young
Werner Hoelzl Satoshi Obara
Yu Yuan
Gergely Huszak Bansi Patel
Oren Yuen
Yasuhiro Hyakutake Adee Ran George Zimmerman

When the IEEE SA Standards Board approved this standard on 9 February 2021, it had the following

Gary Hoffman, Chair
Vacant Position, Vice Chair
John D. Kulick, Past Chair
Konstantinos Karachalios, Secretary
Edward A. Addy Daozhuang Lin Dorothy Stanley
Kevin Lu Mehmet Ulema
Doug Edwards
Daleep C. Mohla Lei Wang
Ramy Ahmed Fathy
Chenhui Niu
J. Travis Griffith F. Keith Waters
Damir Novosel Karl Weber
Joseph L. Koepfinger*
Annette Reilly Sha Wei
Thomas Koshy
Jon Walter Rosdahl Howard Wolfman
David J. Law
Daidi Zhong
Howard Li
*Member Emeritus
Copyright © 2021 IEEE. All rights reserved.
---------------------- Page: 10 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(E)

This introduction is not part of IEEE Std 802.3cr-2021, IEEE Standard for Ethernet. Amendment 10:

Maintenance #14: Isolation.

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 802.3cr-2021 publication, 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 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


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


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: 11 ----------------------
ISO/IEC/IEEE 8802-3:2021/Amd.10:2022(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 am

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