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1、IEEE Std 802.3ap-2007 (Amendment to IEEE Std 802.3-2005) IEEE Standard for Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Met
2、hod and Physical Layer Specifications Amendment 4: Ethernet Operation over Electrical Backplanes I E E E 3 Park Avenue New York, NY 10016-5997, USA 22 May 2007 IEEE Computer Society Sponsored by the LAN/MAN Standards Committee -,-,- IEEE Std 802.3ap-2007 (Amendment to IEEE Std 802.3-2005) IEEE Stand
3、ard for Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications Amendment 4: Ethernet Operati
4、on over Electrical Backplanes LAN/MAN Standards Committee of the IEEE Computer Society Approved 22 March 2007 IEEE-SA Standards Board -,-,- The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2007 by the Institute of Electrical and Electr
5、onics Engineers, Inc. All rights reserved. Published 22 May 2007. Printed in the United States of America. IEEE and 802 are registered trademarks in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through
6、 the Copyright Clearance Center. -,-,- ivCopyright 2007 IEEE. All rights reserved. Introduction 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. E
7、ach IEEE 802.3 project/amendment is identified with a suffix (e.g., IEEE Std 802.3ap-2007). A historical listing of projects that have added to or modified IEEE Std 802.3 is included in IEEE Std 802.3-2005. The media access control (MAC) protocol specified in IEEE Std 802.3 is Carrier Sense Multiple
8、 Access with Collision Detection (CSMA/CD). This MAC protocol was included in the experimental Ethernet developed at Xerox Palo Alto Research Center. While the experimental Ethernet had a 2.94 Mb/s data rate, IEEE Std 802.3-1985 specified operation at 10 Mb/s. Since 1985 new media options, new speed
9、s of operation, and new protocol capabilities have been added to IEEE Std 802.3. 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 802.3
10、u added 100 Mb/s operation (also called Fast Ethernet), IEEE Std 802.3x specified full duplex operation and a flow control protocol, 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) and IEEE Std 802.3
11、ah specified access network Ethernet (also called Ethernet in the First Mile). These major additions are all now included in IEEE Std 802.3-2005 and are not maintained as separate documents. At the date of IEEE Std 802.3ap-2007 publication, IEEE Std 802.3 is comprised of the following documents: Sec
12、tion OneIncludes Clause 1 through Clause 20 and Annex A through Annex H and Annex 4A. Section One includes specifications for 10 Mb/s operation and the MAC, frame formats and service interfaces used for all speeds of operation. Section TwoIncludes Clause 21 through Clause 33 and Annex 22A through An
13、nex 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 Physic
14、al Layer specifications. Section ThreeIncludes 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. It also includes specification of IEEE 802.3 link aggregation.
15、 Section FourIncludes Clause 44 through Clause 54 and Annex 44A through Annex 50A. Section Four includes general information on 10 Gb/s operation as well as most of the 10 Gb/s Physical Layer specifications. Section FiveIncludes Clause 56 through Clause 74 and Annex 58A through Annex 74A. Section Fi
16、ve includes subscriber access Physical Layers and sublayers for operation from 512 kb/s to 1000 Mb/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. This introduction is not part of IEEE Std 802.3ap
17、-2007, IEEE Standard for Information technology Telecommunications and information exchange between systemsLocal and metropolitan area networks Specific requirements CSMA/CD Access Method and Physical Layer Specifications, Amendment 4: Ether- net Operation over Electrical Backplanes. Copyright 2007
18、IEEE. All rights reserved.v IEEE Std 802.3-2005/Cor 1-2006 This corrigendum clarifies and corrects isolation text for twisted pair Ethernet physical interfaces, including harmonization for both powered and unpowered Medium Dependent interfaces. IEEE Std 802.3an-2006 This amendment includes changes t
19、o IEEE Std 802.3-2005 and adds Clause 55 and Annex 55A and Annex 55B. This amendment adds a new Physical Layer for 10 Gb/s operation over balanced twisted- pair structured cabling systems. IEEE Std 802.3aq-2006 This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 68. This amendment
20、 adds a new Physical Layer for 10 Gb/s operation over installed multimode fiber. IEEE Std 802.3as-2006 This amendment includes changes to IEEE Std 802.3-2005. It extends the size of the IEEE 802.3 frame format with an envelope frame. IEEE Std 802.3ap-2007 This amendment includes changes to IEEE Std
21、802.3-2005 and adds Clause 69 through Clause 74 and Annex 69A, Annex 69B, Annex 73A and Annex 74A. This amendment adds new Physical Layers that support the exchange of IEEE Std 802.3 format frames over electrical backplanes at 1 Gb/s and 10 Gb/s. IEEE Std 802.3 will continue to evolve. New Ethernet
22、capabilities are anticipated to be added within the next few years as amendments to this standard. Conformance test methodology An additional standard, IEEE Std 1802.3-2001, provides conformance test information for 10BASE-T. Notice to users Errata Errata, if any, for this and all other standards ca
23、n be accessed at the following URL: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/interp/index.html.
24、-,-,- viCopyright 2007 IEEE. All rights reserved. Downloads Portions of this standard can be downloaded from the Internet. Material include PICS tables, data tables, and code. URLs are listed in the text in the appropriate sections. Patents Attention is called to the possibility that implementation
25、of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. A patent holder or patent applicant has filed a statement of assurance that it wi
26、ll grant licenses under these rights without compensation or under reasonable rates, with reasonable terms and conditions that are demonstrably free of any unfair discrimination to applicants desiring to obtain such licenses. Other Essential Patent Claims may exist for which a statement of assurance
27、 has not been received. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims, or determining whether any licensing terms or conditions are reasonable or non-discriminatory.
28、 Further information may be obtained from the IEEE Standards Association. Participants The following individuals were members of the IEEE 802.3 working group at the beginning of the IEEE P802.3ap working group ballot. Individuals may have not voted, voted for approval, disapproval or abstained on th
29、is amendment. Robert M. Grow, Working Group Chair David J. Law, Working Group Vice-Chair Wael W. Diab, Working Group Secretary Steven B. Carlson, Working Group Executive Secretary Bradley Booth, Working Group Treasurer Adam Healey, IEEE P802.3ap Task Force Chair John DAmbrosia, IEEE P802.3ap Task Fo
30、rce Secretary Schelto vanDoorn, IEEE P802.3ap Task Force Editor-in-Chief Phase 1 Ilango S. Ganga, IEEE P802.3ap Task Force Editor-in-Chief Phase 2 IEEE P802.3ap Task Force Editors Schelto vanDoorn, Clauses 1-44, 70,71 and Annex A, Annex 30B Arthur Marris, Clause 45 Adam Healey, Clause 69, Annex 69A,
31、 Annex 69B Charles Moore, Clause 69, Annex 69A, Annex 69B Tom Palkert, Clause 72 Pat Thaler, Clause 73, Annex 73A Ilango S. Ganga, Clause 74, Annex 74A, Clauses 1-49, 70,71, Annex A, Annex 30B -,-,- Copyright 2007 IEEE. All rights reserved.vii Ali Abaye John Abbott Joe Abler Luc Adriaennsens Puneet
32、Agarwal Jan Alexander Arne Alping Michael Altman Stephen D. Anderson Lewis Aronson Joseph N. Babanezhad Chet Babla Hugh Barrass Howard Baumer Denis Beaudoin Michal Beck Alexei Beliaev Mike Bennett Ernest E. Bergmann Sudeep Bhoja Harmeet Bhugra Peter Bradshaw Al Braga Richard Brand Ralf-Peter Braun R
33、obert D. Brink Benjamin Brown Kevin Brown Brian Brunn Robert Brunner Robert Busse Jeff Cain Luke Chang Kok-Wui Cheong Jae hun Cho Rahul Chopra George Claseman Terry Cobb Larry Cohen Edward Cornejo George Cravens David Cunningham Dariush Dabiri Kevin Daines John Dallesasse Yair Darshan Piers Dawe Chr
34、is Di Minico Thomas Dineen Thuyen Dinh Dan Dove John Dring Mike Dudek Joseph E. Dupuis Herman Eiliya George Eisler Brian S. Ensign John F. Ewen Siavash Fallahi Daniel Feldman Alan Flatman Yukihiro Fujimoto Justin Gaither Xiao Ming Gao Geoffrey M Garner John George Floyd Gerhardt Ali Ghiasi Joel Goer
35、gen Glenn Golden Rich Graham Sandeep Gupta Tanmay Gupta Russ Gyurek Bernie Hammond Asif Hazarika Gopal Hegde Tricia Hill Sammy Hindi Chuck Hudson Walter K. Hurwitz John Jaeger David V. James Andrew C. Jimenez Cristopher Jolly Chad Jones William W. Jones Seong-Soon Joo Thomas K. Jrgensen Juan Jover S
36、anjay Kasturia Yong Kim Jonathan King Paul Kish David J. Koenen Paul Kolesar Tetsu Koyama Subi Krishnamurthy Aniruddha Kundu Alan Kwentus Hans Lackner Daun Langston Jeff Lapak Michael Lawton Michael Lerer Seyoun Lim Tom Lindsay Martin Lobel Dennis Lou Jeffrey Lynch Eric R. Lynskey David W. Martin Th
37、omas Mathey Frank McCarthy Brett McClellan Mike McConnell Michael S. McCormack Richard Y. Mei Richard Mellitz Amir Mezer Tremont Miao Wayne A. Mueller Shimon Muller Jim Muth Hari Naidu Shinji Nishimura Bob Noseworthy Satoshi Obara John Oberstar Mike Oltmanns Bill Panos Glenn Parsons Martin Patoka Ja
38、n P. Peeters Weem Petar Pepeljugoski William R. Peters Abhijit Phanse David Piede Rick Pimpinella Timothy R. Plunkett Petre Popescu Scott R. Powell Haoli Qian Rick Rabinovich Sailesh K. Rao Dan Rausch Pedro Reviriego Albrecht Rommel Valerie Rybinski Hyunsurk (Eric) Ryu Olindo Savi T. Shannon Sawyer
39、Brian Seemann Katsutoshi Seki Lee Sendelbach Abhijit Shanbhag Grant Smith Fulvio Spagna Bryan Sparrowhawk Matthew B. Squire David Srodzinski Clay Stanford Steve Swanson Norman Swenson Andre Szczepanek Vivek Telang Jose Tellado Geoffrey Thompson Lars E. Thon Peter Tomaszewski Hidehiro Toyoda Matt Tra
40、verso Bor-long Twu Sterling A. Vaden Magesh Valliappan Nicholas Van Bavel Andre VanSchyndel Albert Vareljian Brian Von Herzen Manoj Wadekar Nick Weiner Kevin Witt Bill Woodruff Ariel Yagil George Zimmerman Pavel Zivny Bob Zona -,-,- viiiCopyright 2007 IEEE. All rights reserved. The following members
41、 of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. Joseph M. Abler Butch Anton Jacob Ben Ary Hugh Barrass Howard A. Baumer Brad J. Booth P. D. Bradshaw Ralf-Peter Braun Matthew Brown Matthew K. Burnburg William A. Byrd Ed
42、ward J. Carley, Jr. James T. Carlo Juan C. Carreon Luke Chang Keith Chow Tommy P. Cooper Piers J. G. Dawe Russell S. Dietz Thomas J. Dineen Michael T. Dudek James Dumser Sourav K. Dutta John W. Fendrich Howard M. Frazier, Jr. Yukihiro Fujimoto Ilango S. Ganga Ignacio Marin Garcia Devon L. Gayle Ali
43、Ghiasi Ron K. Greenthaler Randall C. Groves Robert M. Grow Erich W. Gunther C. G. Guy Joseph M. Gwinn Adam B. Healey Dennis Horwitz Atsushi Ito Raj Jain Thomas K. Jrgensen David Johnston William W. Jones Shinkyo Kaku Piotr Karocki Stuart J. Kerry Yongbum Kim David J. Law Shawn M. Leard Yeou Song Lee
44、 Cathy Ye Liu G. L. Luri Eric R. Lynskey Mark B. Maloney Nicolai V. Malykh Arthur Marris Brett A. McClellan Francisco J. Melendez Richard I. Mellitz Steven G. Methley Tremont Miao Gary L. Michel William J. Mitchell Charles E. Moore Jose Morales Michael J. Munroe Michael S. Newman Satoshi Obara Rober
45、t Ohara Chris L. Osterloh Stephen R. Palm Donald M. Parker Glenn W. Parsons Michael S. Peppler Vikram Punj Robert A. Robinson Randall M. Safier T. Shannon Sawyer Bartien Sayogo Stephen C. Schwarm Rich Seifert Fulvio Spagna Thomas E. Starai Andre Szczepanek Michael D. Johas Teener Patricia A. Thaler
46、Lars E. Thon Peter Tomaszewski Mark-Rene Uchida Magesh Valliappan Schelto J. Van Doorn Derek T. Woo Oren Yuen Janusz Zalewski Copyright 2007 IEEE. All rights reserved.ix When the IEEE-SA Standards Board approved this standard on 22 March 2007, it had the following membership: Steve M. Mills, Chair R
47、obert M. Grow, Vice Chair Don Wright, Past Chair Judith Gorman, Secretary *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Alan H. Cookson, NIST Representative Virginia C. Sulzberger, Member/TAB Rep Michelle Turner IE
48、EE Standards Program Manager, Document Development Michael D. Kipness IEEE Standards Program Manager, Technical Program Development Richard DeBlasio Jay Forster* Alex Gelman Bill Goldbach Arnie Greenspan Joanna N. Guenin Ken Hanus William B. Hopf Rich Hulett Hermann Koch Joseph L. Koepfinger* John Kulick David J. Law Glenn Parsons Ronald C. Petersen Tom Prevost Narayanan Ramachandran Greg Ratta Robby Robson Anne-Marie Sahazizian Malcolm V. Thaden Richard L. Townsend Howard Wolfman -,-,- List of special symbols For the benefit of