ISO/IEC/IEEE 8802-3:2021/Amd 14:2022

Telecommunications and exchange between information technology systems - Requirements for local and metropolitan area networks - Part 3: Standard for Ethernet - Amendment 14: Bidirectional 10 Gb/s, 25 Gb/s, and 50 Gb/s optical access PHYs

Télécommunications et échange entre systèmes informatiques — Exigences pour les réseaux locaux et métropolitains — Partie 3: Norme pour Ethernet — Amendement 14: Liaisons physiques (PHY) d'accès optique 10 Gb/s, 25 Gb/s et 50 Gb/s bidirectionnelles

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

Overview

ISO/IEC/IEEE 8802-3:2021/Amd 14:2022 is Amendment 14 to the Ethernet standard (ISO/IEC/IEEE 8802-3). Published as IEEE 802.3cp-2021 and adopted in the joint ISO/IEC/IEEE series, this amendment adds Physical Layer (PHY) specifications and management parameters for bidirectional optical Ethernet interfaces at 10 Gb/s, 25 Gb/s, and 50 Gb/s. It defines operation over a single strand of single‑mode fiber (SMF) with defined reaches of at least 10 km, 20 km, and 40 km, enabling BiDi (bidirectional) optical access solutions for local and metropolitan area networks.

Key Topics

• Bidirectional optical PHYs (BiDi): Specifications for sending and receiving signals on a single fiber strand to reduce fiber counts and simplify deployment.
• Rates covered: 10 Gb/s, 25 Gb/s, and 50 Gb/s Ethernet optical PHYs - denoted in the amendment and associated keywords (e.g., 10GBASE-BR10, 25GBASE-BR20, 50GBASE-BR40).
• Reach classes: Mandated support for minimum reaches of 10 km, 20 km, and 40 km over single‑mode fiber.
• Physical sublayers defined: Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA), and Physical Medium Dependent (PMD) sublayers are addressed where applicable.
• Management parameters and FEC: Management attributes and forward error correction (FEC) considerations relevant to optical access PHY operation.
• Standards consolidation: Amendment to IEEE Std 802.3 family and incorporated into the ISO/IEC/IEEE 8802-3 series.

Applications and Who Uses It

Practical applications focus on optical access and metro Ethernet where fiber economy and reach are important:

• Service providers and carriers deploying fiber access or metro links that require long reaches with minimal fiber pairs.
• Network equipment vendors developing transceivers, BiDi optics, and PHY silicon compliant with Ethernet PMD/PMA/PCS layers.
• System integrators and operators upgrading access networks to multi‑gigabit Ethernet without major fiber re‑cabling.
• Test laboratories and certification bodies validating compliance, interoperability, and management functions.
• Use cases include fiber access aggregation, last‑mile upgrades, and any scenario requiring bidirectional single‑fiber Ethernet links at multi‑gigabit speeds.

Related Standards

• ISO/IEC/IEEE 8802-3:2021 (base Ethernet Standard)
• IEEE Std 802.3 and related amendments (e.g., IEEE 802.3cp-2021 designation for this amendment)
• Other IEEE 802.3 PHY amendments referenced in the standard family (for broader context)

This amendment is essential reading for anyone specifying, developing, or deploying BiDi Ethernet optics, 10G/25G/50G optical access PHYs, and single‑strand SMF solutions in local and metropolitan networks.

Standards Content (Sample)

INTERNATIONAL ISO/
STANDARD IEC/IEEE
8802-3
Third edition
2021-02
AMENDMENT 14
2022-10
Telecommunications and exchange
between information technology
systems — Requirements for local and
metropolitan area networks —
Part 3:
Standard for Ethernet
AMENDMENT 14: Bidirectional 10 Gb/s,
25 Gb/s, and 50 Gb/s optical access PHYs
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
AMENDEMENT 14: Liaisons physiques (PHY) d'accès optique 10 Gb/s,
25 Gb/s et 50 Gb/s bidirectionnelles
Reference number
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
© IEEE 2021
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
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ii
© IEEE 2021 – All rights reserved

ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
Foreword
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ISO/IEC/IEEE 8802-3:2021/Amd.14 was prepared by the LAN/MAN of the IEEE Computer Society (as
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track procedure” defined in the Partner Standards Development Organization cooperation agreement
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© IEEE 2021 – All rights reserved iii

IEEE Std 802.3cp™-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,
IEEE Std 802.3cu™-2021,
IEEE Std 802.3cv™-2021,
and IEEE Std 802.3ct™-2021)
IEEE Standard for Ethernet
Amendment 14:
Bidirectional 10 Gb/s, 25 Gb/s, and 50 Gb/s
Optical Access PHYs
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 16 June 2021
IEEE SA Standards Board
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
Abstract: This amendment to IEEE Std 802.3-2018 adds Physical Layer specifications and
management parameters for 10 Gb/s, 25 Gb/s, and 50 Gb/s Ethernet optical interfaces for
bidirectional operation over a single strand of single-mode fiber with reaches of at least 10 km,
20 km, and 40 km.
Keywords: 10GBASE-BR10, 10GBASE-BR20, 10GBASE-BR40, 25GBASE-BR10, 25GBASE-BR20,
25GBASE-BR40, 50GBASE-BR10, 50GBASE-BR20, 50GBASE-BR40, bidirectional (BiDi), Ethernet,
forward error correction (FEC), IEEE 802.3™, IEEE 802.3cp™, multi-gigabit Ethernet bidirectional
Physical Layers, Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA) sublayer,
Physical Medium Dependent (PMD) sublayer
The Institute of Electrical and Electronics Engineers, Inc.
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PDF: ISBN 978-1-5044-7692-8 STD24791
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ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
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ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
Participants
The following individuals were officers and members of the IEEE 802.3 Working Group at the beginning of
the IEEE P802.3cp 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
Frank Effenberger, IEEE P802.3cp Bidirectional 10 Gb/s, 25 Gb/s, and 50 Gb/s Optical Access PHYs
Task Force Chair
Duane Remein, IEEE P802.3cp Bidirectional 10 Gb/s, 25 Gb/s, and 50 Gb/s Optical Access PHYs
Task Force Editor-in-Chief, Phase 1
Yuanqiu Luo, IEEE P802.3cp Bidirectional 10 Gb/s, 25 Gb/s, and 50 Gb/s Optical Access PHYs Task Force
Editor-in-Chief, Phase 2
David Abramson Ali Ghiasi Taketo Kumada
Pete Anslow Joel Goergen Hans Lackner
Michikazu Aono Steven Gorshe Frank Lambrecht
Hideki Goto
Nobuyasu Araki Mark Laubach
Steffen Graber
Tim Baggett Greg Le Cheminant
Olaf Grau
Thananya Baldwin David Lewis
Robert Grow
Steven Baumgartner Mike-Peng Li
Denis Beaudoin Martin Gubow
Alex Lin
Gitesh Bhagwat Mark Gustlin
Robert Lingle
Rich Boyer Marek Hajduczenia
Hai-Feng Liu
David Brandt Howard Heck
Williiam Lo
Ralf-Peter Braun David Hess Kent Lusted
Theodore Brillhart Brian Holden Jeffery Maki
Paul Brooks Bernd Horrmeyer David Malicoat
Matthew Brown Yasuhiro Hyakutake Eric Maniloff
Leon Bruckman Jonathan Ingham Flavio Marques
Jairo Bustos Heredia Kazuhiko Ishibe Arthur Marris
Adrian Butter Hideki Isono Takeo Masuda
John Calvin Tom Issenhuth Mick McCarthy
Clark Carty Hiroaki Ito Brett McClellan
David Chalupsky Kenneth Jackson Larry McMillan
Jacky Chang Andrew Jimenez Greg McSorley
Xin Chang John Johnson Richard Mellitz
Chan Chen Chad Jones Shimon Muller
Golam Choudhury Peter Jones Sean Murphy
Keng Hua Chuang Lokesh Kabra James Nadolny
John D'Ambrosia Haysam Kadry Edward Nakamoto
Piers J. G. Dawe Manabu Kagami Raymond Nering
Fred Dawson Upen Kareti Paul Neveux
Gerrit den Besten
Athanasios Kasapi Gary Nicholl
Claudio DeSanti Yong Kim
Shawn Nicholl
Curtis Donahue Mark Kimber
Kevin Noll
Liang Du Michael Klempa
Mark Nowell
Kathryn Dube Curtis Knittle David Ofelt
Mike Dudek Elizabeth Kochuparambil Ryo Okabe
David Estes Sam Kocsis Tom Palkert
John Ewen Wojciech Koczwara Carlos Pardo
Vincent Ferretti Paul Kolesar Earl Parsons
Brian Franchuk Taiji Kondo Gerald Pepper
Matthias Fritsche Daniel Koppermueller Rubén Perez DeAranda Alonso
Takashi Fukuoka Glen Kramer David Piehler
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
Fabio Pittala Massimo Sorbara Prasad Venugopal
Christopher Pohl Edward Sprague Edward Walter
Roy Wang
William Powell Peter Stassar
Xuehuan Wang
Rick Rabinovich Heath Stewart
James Weaver
Junqing Sun
Parthasarathy Raju
Dong Wei
Adee Ran Steve Swanson
Brian Welch
Alon Regev Tomoo Takahara
Matthias Wendt
Victor Renteria Satoshi Takahashi
Natalie Wienckowski
Thomas Rettig Tadashi Takahashi
Dance Wu
Toshiaki Sakai Kazuya Takayama
Peter Wu
Hamid Salehi Michael Takefman
Dayin Xu
Masaru Terada
Sam Sambasivan
Yu Xu
Edward Sayre Geoffrey Thompson
James Young
Matthew Schmitt Pirooz Tooyserkani
Lennart Yseboodt
Hossein Sedarat Nathan Tracy
Conrad Zerna
Masood Shariff Viet Tran
Xingxin Zhang
Masato Shiino David Tremblay
Chunhui Zhu
Ramin Shirani Stephen Trowbridge
Yan Zhuang
Kapil Shrikhande Mike Tu
Martin Zielinski
Jeff Slavick Ed Ulrichs
George Zimmerman
Scott Sommers Alexander Umnov
Pavel Zivny
The following members of the individual balloting committee voted on this standard. Balloters may have
voted for approval, disapproval, or abstention.
Rob Aekins Yasuhiro Hyakutake Arumugam Paventhan
Osamu Ishida
Robert Aiello Michael Peters
Thomas Alexander Hideki Isono David Piehler
Philip E. Beecher Tom Issenhuth Rick Pimpinella
Rich Boyer Raj Jain Fabio Pittala
Ralf-Peter Braun Jack Jewell Adee Ran
Peter Jones
Jairo Bustos Heredia R. K. Rannow
William Byrd Lokesh Kabra Maximilian Riegel
Steven B. Carlson Stuart Kerry Benjamin Rolfe
Juan Carreon Yong Kim Olindo Savi
Clark Carty Glen Kramer Scott Sommers
Aniruddha Chandra Frank Lambrecht Peter Stassar
Pin Chang Mark Laubach Walter Struppler
Chan Chen David J. Law David Tepen
David Chen Pi-Cheng Law James Theodoras
Charles Cook Han Hyub Lee Nathan Tracy
Piers J. G. Dawe Hyeong Ho Lee David Tremblay
John Deandrea David Lewis Mark-Rene Uchida
Christopher Diminico Jon Lewis Alexander Umnov
Frank Effenberger Yuanqiu Luo Dmitri Varsanofiev
Avraham Freedman Valerie Maguire Ruoxu Wang
Matthias Fritsche Jeffery Maki James Weaver
Limin Geng Scott Mansfield Stephen Webb
Marek Hajduczenia Brett McClellan Karl Weber
Xiang He Jonathon McLendon Matthias Wendt
Adam Healey Richard Mellitz Andreas Wolf
Marco Hernandez Raymond Nering Peter Wu
David Hess Satoshi Obara James Young
Werner Hoelzl Carlos Pardo Yu Yuan
Gergely Huszak Bansi Patel Oren Yuen
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
When the IEEE SA Standards Board approved this standard on 16 June 2021, it had the following
membership:
Gary Hoffman, Chair
Jon Walter Rosdahl, Vice Chair
John D. Kulick, Past Chair
Konstantinos Karachalios, Secretary
Edward A. Addy Howard Li Mehmet Ulema
Doug Edwards Daozhuang Lin Lei Wang
Ramy Ahmed Fathy Kevin Lu F. Keith Waters
J. Travis Griffith Daleep C. Mohla Karl Weber
Thomas Koshy Chenhui Niu Sha Wei
Joseph L. Koepfinger* Damir Novosel Howard Wolfman
David J. Law Annette Reilly Daidi Zhong
Dorothy Stanley
*Member Emeritus
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
Introduction
This introduction is not part of IEEE Std 802.3cp-2021, IEEE Standard for Ethernet—Amendment 14: Bidirectional
10 Gb/s, 25 Gb/s, and 50 Gb/s Optical Access PHYs.
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 Std 802.3-2018 and are not maintained as separate documents.
At the date of IEEE Std 802.3cp-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. 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
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
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(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 through
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 to
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 131
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 Std 802.3cn™-2019
Amendment 4—This amendment includes changes to IEEE Std 802.3-2018 and adds 50 Gb/s,
200 Gb/s, and 400 Gb/s Physical Layer specifications and management parameters for operation over
single-mode fiber with reaches of at least 40 km.
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
IEEE Std 802.3cg™-2019
Amendment 5—This amendment includes changes to IEEE Std 802.3-2018 and its amendments and
adds Clause 146 through Clause 148 and Annex 146A and Annex 146B. This amendment adds
10 Mb/s Physical Layer specifications and management parameters for operation on a single balanced
pair of conductors.
IEEE Std 802.3cq™-2020
Amendment 6—This amendment includes editorial and technical corrections, refinements, and
clarifications to Clause 33 and related portions of the standard.
IEEE Std 802.3cm™-2020
Amendment 7—This amendment includes changes to IEEE Std 802.3-2018 and 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.
IEEE Std 802.3ch™-2020
Amendment 8—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 149,
Annex 149A, Annex 149B, and Annex 149C. This amendment adds physical layer specifications and
management parameters for operation at 2.5 Gb/s, 5 Gb/s, and 10 Gb/s over a single balanced pair of
conductors.
IEEE Std 802.3ca™-2020
Amendment 9—This amendment to IEEE Std 802.3-2018 extends the operation of Ethernet passive
optical networks (EPONs) to multiple channels of 25 Gb/s providing both symmetric and asymmetric
operation for the following data rates (downstream/upstream): 25/10 Gb/s, 25/25 Gb/s, 50/10 Gb/s,
50/25 Gb/s, and 50/50 Gb/s. This amendment specifies the 25 Gb/s EPON Multi-Channel
Reconciliation Sublayer (MCRS), Nx25G-EPON Physical Coding Sublayers (PCSs), Physical Media
Attachment (PMA) sublayers, and Physical Medium Dependent (PMD) sublayers that support both
symmetric and asymmetric data rates while maintaining backward compatibility with already deployed
10 Gb/s EPON equipment. The EPON operation is defined for distances of at least 20 km, and for a
split ratio of at least 1:32.
IEEE Std 802.3cr™-2021
Amendment 10—This amendment includes changes to IEEE Std 802.3-2018 and adds Annex J. This
amendment replaces references to the IEC 60950 series of standards (including IEC 60950-1
“Information technology equipment—Safety—Part 1: General requirements”) with appropriate
references to the IEC 62368 “Audio/video, information and communication technology equipment”
series and makes appropriate changes to the standard corresponding to the new references.
IEEE Std 802.3cu™-2021
Amendment 11—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 151.
This amendment adds Physical Layer (PHY) specifications and management parameters for 100 Gb/s
and 400 Gb/s operation over single-mode fiber, based on 100 Gb/s per wavelength optical signaling.
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
IEEE Std 802.3cv™-2021
Amendment 12—This amendment includes editorial and technical corrections, refinements, and
clarifications to Clause 145, Power over Ethernet, and related portions of the standard.
IEEE Std 802.3ct™-2021
Amendment 13—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 152
through Clause 154 and Annex 154A. This amendment adds 100 Gb/s Physical Layer specifications
and management parameters for operation over DWDM systems with reaches of at least 80 km.
IEEE Std 802.3cp™-2021
Amendment 14—This amendment includes changes to IEEE Std 802.3-2018 and adds Clause 157,
Clause 158, Clause 159, and Clause 160. This amendment adds Physical Layer specifications and
management parameters for 10 Gb/s, 25 Gb/s, and 50 Gb/s Ethernet optical interfaces for bidirectional
operation over a single strand of single-mode fiber.
Two companion documents exist, IEEE Std 802.3.1 and IEEE Std 802.3.2. IEEE Std 802.3.1 describes
Ethernet management information base (MIB) modules for use with the Simple Network Management
Protocol (SNMP). IEEE Std 802.3.2 describes YANG data models for Ethernet. IEEE Std 802.3.1 and
IEEE Std 802.3.2 are updated to add management capability for enhancements to IEEE Std 802.3 after
approval of those enhancements.
IEEE Std 802.3 will continue to evolve. New Ethernet capabilities are anticipated to be added within the
next few years as amendments to this standard.
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
Contents
1. Introduction. 22
1.4 Definitions . 22
1.5 Abbreviations. 23
30. Management. 24
30.5 Layer management for medium attachment units (MAUs). 24
30.5.1 MAU managed object class. 24
30.5.1.1 MAU attributes . 24
30.5.1.1.2 aMAUType . 24
30.5.1.1.16 aFECmode. 25
44. Introduction to 10 Gb/s baseband network . 26
44.3 Delay constraints. 26
45. Management Data Input/Output (MDIO) Interface. 27
45.2 MDIO Interface Registers. 27
45.2.1 PMA/PMD registers. 27
45.2.1.6 PMA/PMD control 2 register (Register 1.7) . 28
45.2.1.7 PMA/PMD status 2 register (Register 1.8). 29
45.2.1.7.1 Transmit fault (1.8.11) . 29
45.2.1.7.2 Receive fault (1.8.10). 30
45.2.1.8 PMD transmit disable register (Register 1.9) . 31
45.2.1.8.1 PMD transmit disable 14 (1.9.15). 31
45.2.1.27a BiDi PMA/PMD extended ability 1 (Register 1.34) . 32
45.2.1.27a.1 25GBASE-BR40-U ability (1.34.11). 32
45.2.1.27a.2 25GBASE-BR40-D ability (1.34.10). 33
45.2.1.27a.3 25GBASE-BR20-U ability (1.34.9). 33
45.2.1.27a.4 25GBASE-BR20-D ability (1.34.8). 33
45.2.1.27a.5 25GBASE-BR10-U ability (1.34.7). 33
45.2.1.27a.6 25GBASE-BR10-D ability (1.34.6). 33
45.2.1.27a.7 10GBASE-BR40-U ability (1.34.5). 33
45.2.1.27a.8 10GBASE-BR40-D ability (1.34.4). 33
45.2.1.27a.9 10GBASE-BR20-U ability (1.34.3). 33
45.2.1.27a.10 10GBASE-BR20-D ability (1.34.2). 33
45.2.1.27a.11 10GBASE-BR10-U ability (1.34.1). 34
45.2.1.27a.12 10GBASE-BR10-D ability (1.34.0). 34
45.2.1.27b BiDi PMA/PMD extended ability 2 (Register 1.35) . 34
45.2.1.27b.1 50GBASE-BR40-U ability (1.35.5). 34
45.2.1.27b.2 50GBASE-BR40-D ability (1.35.4). 34
45.2.1.27b.3 50GBASE-BR20-U ability (1.35.3). 35
45.2.1.27b.4 50GBASE-BR20-D ability (1.35.2). 35
45.2.1.27b.5 50GBASE-BR10-U ability (1.35.1). 35
45.2.1.27b.6 50GBASE-BR10-D ability (1.35.0). 35
45.2.1.110 RS-FEC control register (Register 1.200) . 35
45.2.1.110.1 25G RS-FEC enable (1.200.2) . 35
49. Physical Coding Sublayer (PCS) for 64B/66B, type 10GBASE-R. 36
ISO/IEC/IEEE 8802-3:2021/Amd.14:2022(E)
49.2 Physical Coding Sublayer (PCS) . 36
49.2.2 Functions within the PCS. 36
56. Introduction to Ethernet for subscriber access networks. 37
56.1 Overview. 37
56.1.1 Summary of P2P sublayers . 38
56.1.1.1 P2P fiber media . 38
56.1.1.2 P2P copper media . 38
56.1.2 Summary of P2MP sublayers. 38
56.1.2.1 Multipoint MAC Control Protocol (MPCP). 38
56.1.2.2 Reconciliation Sublayer (RS) and media independent interfaces . 38
56.1.3 Physical Layer signaling systems. 39
78. Energy-Efficient Ethernet (EEE) . 42
78.1.4 PHY types optionally supporting EEE. 42
105. Introduction to 25 Gb/s networks . 43
105.5 Delay constraints. 43
108. Reed-Solomon Forward Error Correction (RS-FEC) sublayer for 10GBASE-R and 25GBASE-R
PHYs. 44
108.1 Overview. 44
108.1.1 Scope . 44
108.1.2 Position of RS-FEC in the 10GBASE-R and 25GBASE-R PHY sublayers. 44
108.1.3 Inter-sublayer interfaces. 45
108.1.3.1 Functional Block Diagram for 10GBASE-R PHYs . 46
108.1.3.2 Functional block diagram for 25GBASE-R PHYs. 47
108.2 FEC service interface. 47
108.2.1 10GBASE-R service primitives . 49
108.2.1.1 FEC_UNITDATA.request. 49
108.2.1.1.1 Semantics of the service primitive. 49
108.2.1.1.2 When generated. 49
108.2.1.1.3 Effect of receipt. 49
108.2.1.2 FEC_UNITDATA.indication . 49
108.2.1.2.1 Semantics of the service primitive. 49
108.2.1.2.2 When generated. 50
108.2.1.2.3 Effect of receipt. 50
108.2.1.3 FEC_SIGNAL.indication . 50
108.2.1.3.1 Semantics of the servi
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