实例介绍
【实例简介】
IEEE Std 802 1Q 2011 Media Access Control MAC Bridges and Virtual Bridge Local Area Networks
IEEE Std 802.1QTM-2011 (Revision of IEEE Std 802. 1Q-2005) EEE Standard for Local and metropolitan area networks Media Access Control (MAc) Bridges and Virtual Bridged Local Area Networks Sponsor LANIMAN Standards committee of the IEEE Computer Society Approved 16 May 201 1 IEEE-SA Standards Board Abstract: This standard specifies how the MAC Service is supported by Virtual Bridged Local Area Networks, the principles of operation of those networks, and the operation of VLAN-aware Bridges including management, protocols, and algorithms Keywords: Bridged Local Area Networks, local area networks(LANS), MAc Bridges, metropolitan area networks, Multiple Spanning Tree Protocol(MSTP), Rapid Spanning Tree Protocol(RSTP), Virtual Bridged Local Area Networks(virtual LANs The Institute of Electrical and Electronics Engineers, Inc 3 Park Avenue. New York. ny 10016-5997 USa Copyright o 2011 by the Institute of Electrical and Electronics Engineers, Inc All rights reserved. Published 31 August 2011. Printed in the United States of America IEEE and 802 are registered trademarks in the U.S. Patent Trademark Office, owned by the Institute of Electrical and Electronics Engineers, Incorporated PDF SBN978-0-7381-67084 STD97139 PrInt: SBN978-0-73816709-1 STDPD97139 IEEEprohibitsdiscrimination,harassmentandbullying.Formoreinformation,visithttp:/vww.ieee.org/web/aboutuswhatis/policies/p9-26html No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. IEEE Standards documents are developed within the IEEE Societies and the Standards coordinating Committees of the IEEE Standards Association(IEEE-SA) Standards Board. The iEfe develops its standards through a consensus development process, approved by the American National Standards Institute, which brings together volunteers representing varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of the Institute and serve without compensation. While the IEEE administers the process and establishes rules to promote fairness in thc consensus devclopmcnt proccss, thc ieee docs not independently evaluate, test, or verify thc accuracy of any of the information contained in its standards Use of an IEEE Standard is wholly voluntary. The ieee disclaims liability for any personal injury, property or other damage, of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or reliance upon this, or any other IEEE Standard document The ieee does not warrant or represent the accuracy or content of the material contained herein, and expressly disclaims any express or implied warranty, including any implied warranty of merchantability or fitness for a specific purpose, or that the usc of thc matcrial contained hcrcin is frcc from patent infringement. IEEE Standards documents arc supplied “ASIS.” The existence of an iEEE Standard does not imply that there are no other ways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEE Standard. Furthermore, the viewpoint expressed at the time a standard is approved and issued is subject to change brought about through developments in the state of the art and comments received from users of the standard. Every Ieee Standard is subjected to review at least every five years for revision or reaffirmation or every ten years for stabilization When a document is more than five years old and has not been reaffirmed, or more than ten years old and has not been stabilized, it is reasonable to conclude that its contcnts, although still of somc valuc, do not wholly reflect the prcscnt statc of thc art. Uscrs arc cautioned to check to determine that they have the latest edition of any IEEE Standard In publishing and making this document available, the ieee is not suggesting or rendering professional or other services for, or on behalf of, any person or entity. Nor is the ieee undertaking to perform any duty owed by any other person or entity to another. Any person utilizing this, and any other TEF Standards document, should rely upon his or her independent judgment in the exercise of reasonable care in any given circumstances or, as appropriate, seek the advice of a competent professional in determining the appropriateness of a given IEEE standard Intcrprctations: Occasionally qucstions may arisc regarding the mcaning of portions of standards as thcy rclatc to specific applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiate action to prepare appropriate responses. Since IEEE Standards represent a consensus of concerned interests, it is important to ensure that any interpretation has also received the concurrence of a balance of interests. For this reason, IEEE and the members of its societies and Standards Coordinating Committees are not able to provide an instant response to interpretation requests except in those cases where the matter has previously received formal consideration A statement, written or oral, that is not processed in accordance with the IEee-sa Standards board Operations manual shall not be considered the official position of ieee or any of its committees and shall not be considered to be nor be relied upon as, a formal interpretation of the IEee. At lectures, symposia, seminars, or educational courses, an individual views of that individual rather than the formal position, explanation, or interpretation of the IEEE idcred thc personal presenting information on IEEE standards shall make it clcar that his or hcr vicws should bc ce Comments for revision of IEEE Standards are welcome from any interested party, regardless of membership affiliation with IEEE. Suggestions for changes in documents should be in the form of a proposed change of text, together with appropriate supporting comments. Recommendations to change the status of a stabilized standard should include a rationale as to why a revision or withdrawal is required. Comments on standards and requests for interpretations should ddressed to Secretary, IEEE-SA Standards board 445 Hoes lane Piscataway. NJ 08854-4141 USA Authorization to photocopy portions of any individual standard for internal or personal use is granted by the Institute of Electrical and Electronics Engineers, Inc provided that the appropriate fee is paid to Copyright Clearance Center. To arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 Rosewood Drive Danvers, MA 01923 USA;(978)750-8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center Introduction This introduction is not part of IEEE Std 802.1Q-2011, IEEE Standard for Local and metropolitan area networks Media Access Control(MAC) Bridges and Virtual Bridged Local Area Networks The MAC Bridge standardization activities that resulted in the development of IEEE Std 802. IDTM. 1993 Edition [B9], introduced the concept of Filtering Services in Bridged Local Area Networks, and mechanisms whereby filtering information in such LANs may be acquired and held in a Filtering Database IEEE Std 802. 1D, 1998 Edition, a revision of IEEE Std 802.1D, 1993 Edition, extended this concept of Filtering Services to define additional capabilities aimed at a) The provision of expedited traffic capabilities, to support the transmission of time-criti information in a lan environment b) The use of signaled priority information as the basis for identifying expedited classes of traffic. c) The provision of filtering services that support the dynamic definition and establishment of Groups in a lan environment, and the filtering of frames by Bridges such that frames addressed to a particular Group are forwarded only on those LANs that are required to reach members of that Group. d) The provision of a Generic Altribute Registration Protocol (GARP) that is used to support the mechanism for providing Group filtering capability and is made available for use in other attribute registration applications. This standard, first published as IEF Std 802. 1Q-1998, makes use of the concepts and mechanisms of LAN Bridging that were introduced by IEEE Std 802.1D, and it defines additional mechanisms that allow the implementation of Virtual Bridged Local Area Networks. The following mechanisms are described e) Virtual LAN Services f) The operation of the Forwarding Process that is required g) The structure of the Filtering Database that is required h) The nature of the protocols and procedures that are required to provide Virtual Lan services including the definition of the frame formats used to represent Vlan identification information, and the procedures used to insert and remove vlan identifiers (VIDs) and the headers in which they are carried i The ability to support end-to-end signaling of priority information regardless of the intrinsic ability of the underlying mac protocols to signal priority information The management services and operations that are required to configure and administer networks The 2005 Revision of the standard incorporated three amendments, ieee Std 802. luTM-2001 IEEE Std 802. 1VTM-2001, and IEEE Std 802. 1STM-2002, into the text of IEEE Std 802.1Q-1998. These amendments describe enhancements to the standard to allow k) Dynamic Group and VLAN registration to be restricted, based on the contents of static filtering entries I) vlan classification according to link layer protocol type m) Support for VLANs carried over multiple Spanning Tree instances Numbers in brackets correspond to the number in the bibliography in Annex M Copyright C 2011 EEE. All rights reserved This revision of the standard incorporates amendments IEFF Std 802 1 adTM-2005, IFFE Std 802. lakTM 2007, IEEE Std 802.1agTM-2007, IEEE Std 802.1 ahTM-2008, IEEE Std 802-1Q-2005/ Cor-1-2008 IEEE Std 802.lapTM-2008, IEEE Std 802. 1Qaw TM-2009, IEEE Std 802. 1QayTM-2009, IEEE Std 802.1 ajTM- 2009, IEEE Std 802.1QavTM-2009, IEEE Std 802.1QauTM-2010, and IEee Std 802.1 QatTM-2010 into the text of IEEE Std 802.1Q-2005. These amendments describe enhancements to the standard to allow n) A service provider to use the architecture and protocols defined in this standard to offer the equivalent of separate LANs, Bridged Local Area Networks, or Virtual Bridged Local Area Networks to a number of customers, while requiring no cooperation between the customers, and minimal cooperation between each customer and the service provider The distribution and registration of Vlan membership information using the Multiple VLaN Registration Protocol(MVRP), and the distribution of group membership information using Multiple Mac Registration Protocol (MMRP), replacing the previous protocols, GVRP and gmrP. p) Support of Connectivity Fault Management (CFM)capabilities for detecting, isolating, and reporting connectivity faults Interconnection of multiple Provider Bridged Networks, allowing a Provider to support up to 224 service instances r) Management of Vlan Bridges via SNMP MIB modules Diagnosis of data-dependent connectivity faults L) Support for traffic engineering 1) The use of Bridging technology as a two-port MAC relay Support for the relay of time sensitive data streams w) Support for congestion management of long-lived data flows within network domains of limited bandwidth-delay product. This is achieved by enabling bridges to signal congestion to end stations capable of transmission rate limiting to avoid frame loss x) Network resources to be reserved for specific traffic streams traversing a bridged local area network y) The use of iEEE 802. 17TM and IEEE 802.20TM media in bridged local area networks As part of this revision of the standard, Clause 13 was extensively revised in order to integrate the description of the rapid Spanning tree Protocol (rSTP) into the text of the standard rather than including it by reference to Ieee Std 802.ID This standard contains state-of-the-art material. The area covered by this standard is undergoing evolution Revisions are anticipated within the next few years to clarify existing material, to correct possible errors, and to incorporate new related material. Information on the current revision state of this and other IEeE 802 standards may be obtained from Secretary, IEEE-Sa Standards board 445 Hoes lane Piscataway, NJ08854~4141 USA Notice to users Laws and regulations USers of these documents should consult all applicable laws and regulations. Compliance with the provisions of this standard does not imply compliance to any applicable regulatory requirements Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. ieeE does not, by the publication of its standards, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing So Copyright@ 2011 IEEE. All rights reserved Copyrights This document is copyrighted by the IEEE. It is made available for a wide variety of both public and private uses.These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods. By making this document available for use and adoption by public authorities and private users, the ieee does not waive any rights in copyright to this document Updating of ieEE documents Users of ieee standards should be aware that these documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of amendments corrigenda, or errata. An official ieee document at any point in time consists of the current edition of the document together with any amendments, corrigenda, or errata then in effect. In order to determine whether a given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the ieee Standards association website al http://ieeexplore.ieeeorg/xplstandards.isporcontacttheieeEattheaddresslistedpreviouslyFormore information about the IEEE Standards association or the ieee standards development process, visit the IeeE-sawebsiteathttpstandardsieee.org Errata Errata,ifany,forthisandallotherstandardscanbeaccessedatthefollowingUrl:http:// standards.ieee. org/reading/ieee/updates/errata/index. htmL. Users are encouraged to check this URL for errata periodically Interpretations CurrentinterpretationscanbeaccessedatthefollowingUrl:http://standards.ieeeorg/reading/ieee/interp/ index.html Patents Attention is called to the possibility that implementation 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. The ieee shall not be responsible for identifying patents or patent applications for which a license may be required to implement an ieee standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. a patent holder or patent applicant has filed a statement of assurance that it will grant licenses under these rights without compensation or under reasonable rates and nondiscriminatory, reasonable terms and conditions to applicants desiring to obtain such licenses. The ieee makes no representation as to the reasonableness of rales,terms, and conditions of the license agreements offered by patent holders or patent applicants. Further information may be obtained from the IEEE Standards Department Copyright C 2011 EEE. All rights reserved Participants At the time this standard was submitted to the IEee-Sa Standards board for approval, the ieee 802.1 Working Group had the following membership Anthony Jeffree, Chair and editor Paul Congdon vice chair Stephen Haddock, Chair, Interworking Task group Zehavit alon Anoop ghanwani Donald pannell Yafan An Eric Gray Glenn Parsons Ting Ao Yingjie gu Joseph pelissier Peter Ashwood-Smith Craig gunther Rene r: Christian boiger Hitoshi hayakawa Karen randall Paul bottorff Hal Keen Dan romascanu Rudolf brandner Yongbum kim Jessy router Craig carlson Philippe Klein Panagiotis saltsidis Claudio desanti Oliver Kleinberg Michael seaman Zhemin dins Michael Krause Rakesh sharm Donald eastlake Li li Kevin b. stanton Janos farkas Jeff lynch Robert sultan Donald fedyk Thomas Mack-Crane Michael te Norman finn John Messenger Patricia thaler Ilango ganga John Morris Chait tumuluri Geoffrey garner Eric multanen Maarten Vissers av The following members of the individual balloting committee voted on this standard. balloters may have voted for approval, disapproval, or abstention Thomas Alexander C. Huntley Maximilian riegel Zchavit alon akio iso Robert robinson Danilo antonelli Atsushi ito Jessy rouy Hugh b Rai jai Randall safi obert boatrigh Junghoon Jee Panagiotis Saltsid Tomo bogata Anthony Jeffree Peter saunderson Gennaro Boggia hin kyo kak Bastien sayogo Nancy bravin Piotr karocki Benson schliesser William byrd Stuart J. Kerry Michael seaman Juan Carreon Yongbum Kim Rich Seifert Keith Chow Bruce Kraemer Gil shultz Charles cook John lemon Kapil sood Wael Diab Michael lerer Matthew Squire Russell di Kevin B. stanton Thomas dineen William Lumpkins Thomas starai Souray dutt Walter Struppler Jose dominic espejo Thomas mack-Crane Robert sultan Donald fedyk Elvis maculuba Joseph tardo Prince francis Arthur marris William Taylor Yukihiro Fujimoto Jeffery masters Patricia Thaler Ilango Ganga Jonathon mclendon David Thompson Randall groves Joseph moran Geoffrey Thompson Craig gunthe Michael s. newman Jeffrey Towne C. Guy Nick s. A. Nikjoo Prabodh varshney Stephen Haddock Satoshi obara Ludwig winkel Marck hajduczcnia David olsen Michael wright David hunter Glenn parsons Oren Yuen Copyright@ 2011 IEEE. All rights reserved 【实例截图】
【核心代码】
IEEE Std 802 1Q 2011 Media Access Control MAC Bridges and Virtual Bridge Local Area Networks
IEEE Std 802.1QTM-2011 (Revision of IEEE Std 802. 1Q-2005) EEE Standard for Local and metropolitan area networks Media Access Control (MAc) Bridges and Virtual Bridged Local Area Networks Sponsor LANIMAN Standards committee of the IEEE Computer Society Approved 16 May 201 1 IEEE-SA Standards Board Abstract: This standard specifies how the MAC Service is supported by Virtual Bridged Local Area Networks, the principles of operation of those networks, and the operation of VLAN-aware Bridges including management, protocols, and algorithms Keywords: Bridged Local Area Networks, local area networks(LANS), MAc Bridges, metropolitan area networks, Multiple Spanning Tree Protocol(MSTP), Rapid Spanning Tree Protocol(RSTP), Virtual Bridged Local Area Networks(virtual LANs The Institute of Electrical and Electronics Engineers, Inc 3 Park Avenue. New York. ny 10016-5997 USa Copyright o 2011 by the Institute of Electrical and Electronics Engineers, Inc All rights reserved. Published 31 August 2011. Printed in the United States of America IEEE and 802 are registered trademarks in the U.S. Patent Trademark Office, owned by the Institute of Electrical and Electronics Engineers, Incorporated PDF SBN978-0-7381-67084 STD97139 PrInt: SBN978-0-73816709-1 STDPD97139 IEEEprohibitsdiscrimination,harassmentandbullying.Formoreinformation,visithttp:/vww.ieee.org/web/aboutuswhatis/policies/p9-26html No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. IEEE Standards documents are developed within the IEEE Societies and the Standards coordinating Committees of the IEEE Standards Association(IEEE-SA) Standards Board. The iEfe develops its standards through a consensus development process, approved by the American National Standards Institute, which brings together volunteers representing varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of the Institute and serve without compensation. While the IEEE administers the process and establishes rules to promote fairness in thc consensus devclopmcnt proccss, thc ieee docs not independently evaluate, test, or verify thc accuracy of any of the information contained in its standards Use of an IEEE Standard is wholly voluntary. The ieee disclaims liability for any personal injury, property or other damage, of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or reliance upon this, or any other IEEE Standard document The ieee does not warrant or represent the accuracy or content of the material contained herein, and expressly disclaims any express or implied warranty, including any implied warranty of merchantability or fitness for a specific purpose, or that the usc of thc matcrial contained hcrcin is frcc from patent infringement. IEEE Standards documents arc supplied “ASIS.” The existence of an iEEE Standard does not imply that there are no other ways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEE Standard. Furthermore, the viewpoint expressed at the time a standard is approved and issued is subject to change brought about through developments in the state of the art and comments received from users of the standard. Every Ieee Standard is subjected to review at least every five years for revision or reaffirmation or every ten years for stabilization When a document is more than five years old and has not been reaffirmed, or more than ten years old and has not been stabilized, it is reasonable to conclude that its contcnts, although still of somc valuc, do not wholly reflect the prcscnt statc of thc art. Uscrs arc cautioned to check to determine that they have the latest edition of any IEEE Standard In publishing and making this document available, the ieee is not suggesting or rendering professional or other services for, or on behalf of, any person or entity. Nor is the ieee undertaking to perform any duty owed by any other person or entity to another. Any person utilizing this, and any other TEF Standards document, should rely upon his or her independent judgment in the exercise of reasonable care in any given circumstances or, as appropriate, seek the advice of a competent professional in determining the appropriateness of a given IEEE standard Intcrprctations: Occasionally qucstions may arisc regarding the mcaning of portions of standards as thcy rclatc to specific applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiate action to prepare appropriate responses. Since IEEE Standards represent a consensus of concerned interests, it is important to ensure that any interpretation has also received the concurrence of a balance of interests. For this reason, IEEE and the members of its societies and Standards Coordinating Committees are not able to provide an instant response to interpretation requests except in those cases where the matter has previously received formal consideration A statement, written or oral, that is not processed in accordance with the IEee-sa Standards board Operations manual shall not be considered the official position of ieee or any of its committees and shall not be considered to be nor be relied upon as, a formal interpretation of the IEee. At lectures, symposia, seminars, or educational courses, an individual views of that individual rather than the formal position, explanation, or interpretation of the IEEE idcred thc personal presenting information on IEEE standards shall make it clcar that his or hcr vicws should bc ce Comments for revision of IEEE Standards are welcome from any interested party, regardless of membership affiliation with IEEE. Suggestions for changes in documents should be in the form of a proposed change of text, together with appropriate supporting comments. Recommendations to change the status of a stabilized standard should include a rationale as to why a revision or withdrawal is required. Comments on standards and requests for interpretations should ddressed to Secretary, IEEE-SA Standards board 445 Hoes lane Piscataway. NJ 08854-4141 USA Authorization to photocopy portions of any individual standard for internal or personal use is granted by the Institute of Electrical and Electronics Engineers, Inc provided that the appropriate fee is paid to Copyright Clearance Center. To arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 Rosewood Drive Danvers, MA 01923 USA;(978)750-8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center Introduction This introduction is not part of IEEE Std 802.1Q-2011, IEEE Standard for Local and metropolitan area networks Media Access Control(MAC) Bridges and Virtual Bridged Local Area Networks The MAC Bridge standardization activities that resulted in the development of IEEE Std 802. IDTM. 1993 Edition [B9], introduced the concept of Filtering Services in Bridged Local Area Networks, and mechanisms whereby filtering information in such LANs may be acquired and held in a Filtering Database IEEE Std 802. 1D, 1998 Edition, a revision of IEEE Std 802.1D, 1993 Edition, extended this concept of Filtering Services to define additional capabilities aimed at a) The provision of expedited traffic capabilities, to support the transmission of time-criti information in a lan environment b) The use of signaled priority information as the basis for identifying expedited classes of traffic. c) The provision of filtering services that support the dynamic definition and establishment of Groups in a lan environment, and the filtering of frames by Bridges such that frames addressed to a particular Group are forwarded only on those LANs that are required to reach members of that Group. d) The provision of a Generic Altribute Registration Protocol (GARP) that is used to support the mechanism for providing Group filtering capability and is made available for use in other attribute registration applications. This standard, first published as IEF Std 802. 1Q-1998, makes use of the concepts and mechanisms of LAN Bridging that were introduced by IEEE Std 802.1D, and it defines additional mechanisms that allow the implementation of Virtual Bridged Local Area Networks. The following mechanisms are described e) Virtual LAN Services f) The operation of the Forwarding Process that is required g) The structure of the Filtering Database that is required h) The nature of the protocols and procedures that are required to provide Virtual Lan services including the definition of the frame formats used to represent Vlan identification information, and the procedures used to insert and remove vlan identifiers (VIDs) and the headers in which they are carried i The ability to support end-to-end signaling of priority information regardless of the intrinsic ability of the underlying mac protocols to signal priority information The management services and operations that are required to configure and administer networks The 2005 Revision of the standard incorporated three amendments, ieee Std 802. luTM-2001 IEEE Std 802. 1VTM-2001, and IEEE Std 802. 1STM-2002, into the text of IEEE Std 802.1Q-1998. These amendments describe enhancements to the standard to allow k) Dynamic Group and VLAN registration to be restricted, based on the contents of static filtering entries I) vlan classification according to link layer protocol type m) Support for VLANs carried over multiple Spanning Tree instances Numbers in brackets correspond to the number in the bibliography in Annex M Copyright C 2011 EEE. All rights reserved This revision of the standard incorporates amendments IEFF Std 802 1 adTM-2005, IFFE Std 802. lakTM 2007, IEEE Std 802.1agTM-2007, IEEE Std 802.1 ahTM-2008, IEEE Std 802-1Q-2005/ Cor-1-2008 IEEE Std 802.lapTM-2008, IEEE Std 802. 1Qaw TM-2009, IEEE Std 802. 1QayTM-2009, IEEE Std 802.1 ajTM- 2009, IEEE Std 802.1QavTM-2009, IEEE Std 802.1QauTM-2010, and IEee Std 802.1 QatTM-2010 into the text of IEEE Std 802.1Q-2005. These amendments describe enhancements to the standard to allow n) A service provider to use the architecture and protocols defined in this standard to offer the equivalent of separate LANs, Bridged Local Area Networks, or Virtual Bridged Local Area Networks to a number of customers, while requiring no cooperation between the customers, and minimal cooperation between each customer and the service provider The distribution and registration of Vlan membership information using the Multiple VLaN Registration Protocol(MVRP), and the distribution of group membership information using Multiple Mac Registration Protocol (MMRP), replacing the previous protocols, GVRP and gmrP. p) Support of Connectivity Fault Management (CFM)capabilities for detecting, isolating, and reporting connectivity faults Interconnection of multiple Provider Bridged Networks, allowing a Provider to support up to 224 service instances r) Management of Vlan Bridges via SNMP MIB modules Diagnosis of data-dependent connectivity faults L) Support for traffic engineering 1) The use of Bridging technology as a two-port MAC relay Support for the relay of time sensitive data streams w) Support for congestion management of long-lived data flows within network domains of limited bandwidth-delay product. This is achieved by enabling bridges to signal congestion to end stations capable of transmission rate limiting to avoid frame loss x) Network resources to be reserved for specific traffic streams traversing a bridged local area network y) The use of iEEE 802. 17TM and IEEE 802.20TM media in bridged local area networks As part of this revision of the standard, Clause 13 was extensively revised in order to integrate the description of the rapid Spanning tree Protocol (rSTP) into the text of the standard rather than including it by reference to Ieee Std 802.ID This standard contains state-of-the-art material. The area covered by this standard is undergoing evolution Revisions are anticipated within the next few years to clarify existing material, to correct possible errors, and to incorporate new related material. Information on the current revision state of this and other IEeE 802 standards may be obtained from Secretary, IEEE-Sa Standards board 445 Hoes lane Piscataway, NJ08854~4141 USA Notice to users Laws and regulations USers of these documents should consult all applicable laws and regulations. Compliance with the provisions of this standard does not imply compliance to any applicable regulatory requirements Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. ieeE does not, by the publication of its standards, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing So Copyright@ 2011 IEEE. All rights reserved Copyrights This document is copyrighted by the IEEE. It is made available for a wide variety of both public and private uses.These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods. By making this document available for use and adoption by public authorities and private users, the ieee does not waive any rights in copyright to this document Updating of ieEE documents Users of ieee standards should be aware that these documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of amendments corrigenda, or errata. An official ieee document at any point in time consists of the current edition of the document together with any amendments, corrigenda, or errata then in effect. In order to determine whether a given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the ieee Standards association website al http://ieeexplore.ieeeorg/xplstandards.isporcontacttheieeEattheaddresslistedpreviouslyFormore information about the IEEE Standards association or the ieee standards development process, visit the IeeE-sawebsiteathttpstandardsieee.org Errata Errata,ifany,forthisandallotherstandardscanbeaccessedatthefollowingUrl:http:// standards.ieee. org/reading/ieee/updates/errata/index. htmL. Users are encouraged to check this URL for errata periodically Interpretations CurrentinterpretationscanbeaccessedatthefollowingUrl:http://standards.ieeeorg/reading/ieee/interp/ index.html Patents Attention is called to the possibility that implementation 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. The ieee shall not be responsible for identifying patents or patent applications for which a license may be required to implement an ieee standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. a patent holder or patent applicant has filed a statement of assurance that it will grant licenses under these rights without compensation or under reasonable rates and nondiscriminatory, reasonable terms and conditions to applicants desiring to obtain such licenses. The ieee makes no representation as to the reasonableness of rales,terms, and conditions of the license agreements offered by patent holders or patent applicants. Further information may be obtained from the IEEE Standards Department Copyright C 2011 EEE. All rights reserved Participants At the time this standard was submitted to the IEee-Sa Standards board for approval, the ieee 802.1 Working Group had the following membership Anthony Jeffree, Chair and editor Paul Congdon vice chair Stephen Haddock, Chair, Interworking Task group Zehavit alon Anoop ghanwani Donald pannell Yafan An Eric Gray Glenn Parsons Ting Ao Yingjie gu Joseph pelissier Peter Ashwood-Smith Craig gunther Rene r: Christian boiger Hitoshi hayakawa Karen randall Paul bottorff Hal Keen Dan romascanu Rudolf brandner Yongbum kim Jessy router Craig carlson Philippe Klein Panagiotis saltsidis Claudio desanti Oliver Kleinberg Michael seaman Zhemin dins Michael Krause Rakesh sharm Donald eastlake Li li Kevin b. stanton Janos farkas Jeff lynch Robert sultan Donald fedyk Thomas Mack-Crane Michael te Norman finn John Messenger Patricia thaler Ilango ganga John Morris Chait tumuluri Geoffrey garner Eric multanen Maarten Vissers av The following members of the individual balloting committee voted on this standard. balloters may have voted for approval, disapproval, or abstention Thomas Alexander C. Huntley Maximilian riegel Zchavit alon akio iso Robert robinson Danilo antonelli Atsushi ito Jessy rouy Hugh b Rai jai Randall safi obert boatrigh Junghoon Jee Panagiotis Saltsid Tomo bogata Anthony Jeffree Peter saunderson Gennaro Boggia hin kyo kak Bastien sayogo Nancy bravin Piotr karocki Benson schliesser William byrd Stuart J. Kerry Michael seaman Juan Carreon Yongbum Kim Rich Seifert Keith Chow Bruce Kraemer Gil shultz Charles cook John lemon Kapil sood Wael Diab Michael lerer Matthew Squire Russell di Kevin B. stanton Thomas dineen William Lumpkins Thomas starai Souray dutt Walter Struppler Jose dominic espejo Thomas mack-Crane Robert sultan Donald fedyk Elvis maculuba Joseph tardo Prince francis Arthur marris William Taylor Yukihiro Fujimoto Jeffery masters Patricia Thaler Ilango Ganga Jonathon mclendon David Thompson Randall groves Joseph moran Geoffrey Thompson Craig gunthe Michael s. newman Jeffrey Towne C. Guy Nick s. A. Nikjoo Prabodh varshney Stephen Haddock Satoshi obara Ludwig winkel Marck hajduczcnia David olsen Michael wright David hunter Glenn parsons Oren Yuen Copyright@ 2011 IEEE. All rights reserved 【实例截图】
【核心代码】
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