Physical layer specifications and management parameters for 25 Gb/s and 50 Gb/s passive optical networks
Spécifications de couche physique et paramètres de gestion pour réseaux optiques passifs à 25 Gb/s et 50 Gb/s
Standards Content (sample)
ISO/IEC JTC 1/SC 6
Telecommunications and exchange
between information technology
Voting begins on:
2021-06-30 systems — Requirements for local and
metropolitan area networks —
Voting terminates on:
Standard for Ethernet
AMENDMENT 9: Physical layer
specifications and management
parameters for 25 Gb/s and 50 Gb/s
passive optical networks
Télécommunications et échange entre systèmes informatiques —
Exigences pour les réseaux locaux et métropolitains —
Partie 3: Norme pour Ethernet
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
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/IEC/IEEE 8802-3:2021/FDAM 9:2021(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 9:2021(E)
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ISO/IEC/IEEE 8802-3:2021/FDAM 9:2021(E)
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---------------------- Page: 3 ----------------------
IEEE Std 802.3ca™-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,
IEEE Std 802.3cq™-2020,
IEEE Std 802.3cm™-2020,
and IEEE Std 802.3ch™-2020)
IEEE Standard for Ethernet
Physical Layer Specifications and
Management Parameters for 25 Gb/s and
50 Gb/s Passive Optical Networks
Developed by the
LAN/MAN Standards Committee
IEEE Computer Society
Approved 4 June 2020
IEEE SA Standards Board
---------------------- Page: 4 ----------------------
Abstract: 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 standard 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. Backward compatibility with
deployed 1G-EPON and ITU-T G.984 GPON is maintained with 25GBASE-PQ for the specific
case of 1G-EPON and GPON ONUs using reduced-band (40 nm) lasers. The EPON operation isdefined for distances of at least 20 km, and for a split ratio of at least 1:32.
Keywords: 25 Gb/s Ethernet passive optical networks (25G-EPON), 50 Gb/s Ethernet passive
optical networks (50G-EPON), amendment, forward error correction (FEC), IEEE 802.3™,
IEEE 802.3ca™, Multi-Channel Reconciliation Sublayer (MCRS), Multipoint MAC Control
(MPMC), Physical Coding Sublayer (PCS), Physical Media Attachment (PMA), Physical MediumDependent (PMD), PON, Point-to-Multipoint (P2MP)
The Institute of Electrical and Electronics Engineers, Inc.
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Copyright © 2020 by The Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 3 July 2020. Printed in the United States of America.
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PDF: ISBN 978-1-5044-6768-1 STD24221
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The following individuals were officers and members of the IEEE 802.3 Working Group at the beginning ofthe IEEE P802.3ca 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, Phase 1
Jon Lewis, IEEE 802.3 Working Group Secretary, Phase 2
Steven B. Carlson, IEEE 802.3 Working Group Executive Secretary
Valerie Maguire, IEEE 802.3 Working Group Treasurer
Curtis Knittle, IEEE P802.3ca Nx25G-EPON Task Force Chair
Glen Kramer, IEEE P802.3ca Nx25G-EPON Task Force Vice-Chair
Marek Hajduczenia, IEEE P802.3ca Nx25G-EPON Task Force Editor-in-Chief
John Abbott Liang Du Yasuaki Kawatsu
David Abramson Yong Kim
Andrea Agnes Mark Kimber
Marc Dupuis Jonathan King
Hongming An Frank Effenberger Michael Klempa
Jes Asmussen David Estes Elizabeth Kochuparambil
Richard Baca John Ewen Wojciech Koczwara
Borhan Fathi Moghadam
Tim Baggett Paul Kolesar
Vincent Ferretti Taiji Kondo
Thananya Baldwin Brian Franchuk Olaf Krieger
Steven Baumgartner Matthias Fritsche Hans Lackner
Denis Beaudoin Richard Frosch Jeffrey Lapak
Liav Ben-Artsi Shiyong Fu Mark Laubach
Mike Gardner Han Hyub Lee
Vipul Bhatt Claude Gauthier June Hee Lee
Gao Bo Ali Ghiasi Alex Levin
Martin Bouda Joel Goergen Jon Lewis
David Brandt Zhigang Gong David Li
Ralf-Peter Braun Mike-Peng Li
Jens Gottron Jane Lim
Alan Brown Steffen Graber Alex Lin
Matthew Brown Olaf Grau Dekun Liu
Michal Brychta Robert Grow Hai-Feng Liu
Gary Burrell Mark Gustlin Karen Liu
Hayden Haynes Zhenyu Liu
Jairo Bustos Heredia
Adrian Butter Xiang He William Lo
John Calvin Howard Heck Yuchun Lu
Clark Carty Brian Holden Miklos Lukacs
Craig Chabot Rita Horner Kent Lusted
Bernd Horrmeyer Ilya Lyubomirsky
Frank Chang Gergely Huszak Jeffery Maki
Xin Chang Yasuhiro Hyakutake David Malicoat
Golam Choudhury Jonathan Ingham Flavio Marques
Keng Hua Chuang Kazuhiko Ishibe Arthur Marris
Kamal Dalmia Hideki Isono Chris Mash
Tom Issenhuth Takeo Masuda
Piers Dawe Kenneth Jackson Kirsten Matheus
Fred Dawson Andrew Jimenez Erdem Matoglu
John Deandrea John Johnson Marco Mazzini
Gerrit den Besten Chad Jones Mick McCarthy
Claudio DeSanti Peter Jones
Chris Diminico Lokesh Kabra Larry McMillan
Hormoz Djahanshahi Manabu Kagami Greg McSorley
Curtis Donahue Upen Kareti Richard Mellitz
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 9 ----------------------
Martin Miller Ricky Vernickel
Toshiyuki Moritake Edward Sayre
Thomas Mueller James Schuessler
Edward Nakamoto Steve Sekel
Paul Neveux Masood Shariff
Gary Nicholl Mizuki Shirao
Shawn Nicholl Jialong Shuai
John Nolan Jeff Slavick
Kevin Noll Daniel Smith
Mark Nowell Scott Sommers
David Ofelt Tom Souvignier
Josef Ohni Bryan Sparrowhawk
Tom Palkert Edward Sprague
Sujan Pandey Peter Stassar
Carlos Pardo Heath Stewart
Earl Parsons David Stover
Gerald Pepper Junqing Sun
Phong Pham Liyang Sun
David Piehler Steve Swanson
Rick Pimpinella Bharat Tailor
Christopher Pohl Tomoo Takahara
William Powell Kohichi Tamura
Dino Pozzebon Mehmet Tazebay
Rick Rabinovich Ronald Tellas
Zvi Rechtman Geoffrey Thompson
Alon Regev Pirooz Tooyserkani
Richard (Yujia) Zhou
Duane Remein Nathan Tracy
Victor Renteria David Tremblay
Salvatore Rotolo Stephen Trowbridge
Alexander Rysin Ta Chin Tseng
Toshiaki Sakai Ed Ulrichs
Hamid Salehi Alexander Umnov Harald Zweck
The following members of the individual balloting committee voted on this standard. Balloters may havevoted for approval, disapproval, or abstention.
Thomas Alexander Werner Hoelzl Satoshi Obara
Nancy Bravin Yasuhiro Hyakutake Thomas Palkert
Matthew Brown Raj Jain
Demetrio Bucaneg, Jr. SangKwon Jeong
Jairo Bustos Heredia Lokesh Kabra
William Byrd Stuart Kerry
Steven B. Carlson Yongbum Kim
Juan Carreon Curtis Knittle
R. K. Rannow
Clark Carty Glen Kramer
Pin Chang Mark Laubach
Xin Chang David J. Law
Chan Chen Pi-Cheng Law
Joseph Coffey Han Hyub Lee
Charles Cook Hyeong Ho Lee
John Deandrea David Lewis
Claudio DeSanti Jon Lewis
Vincent Ferretti Karen Liu
Avraham Freedman Javier Luiso
Matthias Fritsche Valerie Maguire
Joel Goergen Jeffery Maki
Martin Gubow Richard Mellitz
Marek Hajduczenia Tremont Miao
Adam Healey Raymond Nering
Marco Hernandez Paul Neveux
David Hess Paul Nikolich
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 10 ----------------------
When the IEEE SA Standards Board approved this standard on 4 June 2020, it had the followingmembership:
Gary Hoffman, Chair
Jon Walter Rosdahl, Vice Chair
Jean-Philippe Faure, Past Chair
Konstantinos Karachalios, Secretary
Ted Burse David J. Law Mehmet Ulema
J. Travis Griffith Howard Li Lei Wang
Grace Gu Dong Liu Sha Wei
Guido R. Hiertz Kevin Lu Philip B. Winston
Joseph L. Koepfinger* Paul Nikolich Daidi Zhong
John D. Kulick Jingyi Zhou
Copyright © 2020 IEEE. All rights reserved.
---------------------- Page: 11 ----------------------
This introduction is not part of IEEE Std 802.3ca-2020, IEEE Standard for Ethernet. Amendment 9: Physical Layer
Specifications and Management Parameters for 25 Gb/s and 50 Gb/s Passive Optical Networks.
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 addedin 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 Std802.3-2018 and are not maintained as separate documents.
At the date of IEEE Std 802.3ca-2020 publication, IEEE Std 802.3 was composed of the followingdocuments:
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 serviceinterfaces 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 Layerspecifications.
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 PhysicalLayer 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 Layerspecifications.
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 definesCopyright © 2020 IEEE. All rights reserved.
---------------------- Page: 12 ----------------------
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 electricalbackplanes 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 80thr