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14、3#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#
15、23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23g68g77g55g48IEEE Std 802.1aj-2009(Amendment to IEEE Std 802.1Q-2005)IEEE Standard for Local and metropo
16、litan area networksVirtual Bridged Local Area NetworksAmendment 11: Two-Port Media Access Control (MAC) RelaySponsorLAN/MAN Standards Committeeof theIEEE Computer SocietyApproved 9 December 2009IEEE-SA Standards BoardAbstract: This amendment to IEEE Std 802.1Q specifies the function of a MAC Relay w
17、ith twoMACs, and the protocols and procedures to support its operation. A MAC Relay is transparent toall frame-based media independent protocols except those explicitly addressed to this device. It isremotely manageable through at least one of its external MACs, and signals a failure of eitherMACs L
18、AN through the other MAC.Keywords: MAC Relay, network interface device, Provider Bridged Networks, Virtual BridgedLocal Area Networks, Virtual LANs, VLANsThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2009 by the Institute of Electrica
19、l and Electronics Engineers, Inc.All rights reserved. Published 30 December 2009. 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 educationalclassroom use can also be ob
20、tained through the Copyright Clearance Center.iv Copyright 2009 IEEE. All rights reserved.IntroductionNotice to usersLaws and regulationsUsers of these documents should consult all applicable laws and regulations. Compliance with theprovisions of this standard does not imply compliance to any applic
21、able regulatory requirements.Implementers of the standard are responsible for observing or referring to the applicable regulatoryrequirements. IEEE does not, by the publication of its standards, intend to urge action that is not incompliance with applicable laws, and these documents may not be const
22、rued as doing so. CopyrightsThis document is copyrighted by the IEEE. It is made available for a wide variety of both public and privateuses. These include both use, by reference, in laws and regulations, and use in private self-regulation,standardization, and the promotion of engineering practices
23、and methods. By making this documentavailable for use and adoption by public authorities and private users, the IEEE does not waive any rights incopyright to this document.Updating of IEEE documentsUsers of IEEE standards should be aware that these documents may be superseded at any time by theissua
24、nce 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 thedocument together with any amendments, corrigenda, or errata then in effect. In order to determine wh
25、ethera given document is the current edition and whether it has been amended through the issuance ofamendments, corrigenda, or errata, visit the IEEE Standards Association website at http:/ieeexplore.ieee.org/xpl/standards.jsp, or contact the IEEE at the address listed previously.For more informatio
26、n about the IEEE Standards Association or the IEEE standards development process,visit the IEEE-SA website at http:/standards.ieee.org.ErrataErrata, if any, for this and all other standards can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users a
27、re encouraged to check this URL forerrata periodically.InterpretationsCurrent interpretations can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/interp/index.html.This introduction is not part of IEEE Std 802.1aj-2009, IEEE Standard for Local and Metropolitan AreaNetworksVir
28、tual Bridged Local Area NetworksAmendment 11: Two-Port Media Access Control (MAC) Relay.Copyright 2009 IEEE. All rights reserved. vPatentsAttention is called to the possibility that implementation of this amendment may require use of subjectmatter covered by patent rights. By publication of this ame
29、ndment, no position is taken with respect to theexistence or validity of any patent rights in connection therewith. The IEEE is not responsible for identifyingEssential Patent Claims for which a license may be required, for conducting inquiries into the legal validityor scope of Patents Claims or de
30、termining whether any licensing terms or conditions provided in connectionwith submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this amendment are expressly advised that determination of the validity of anypatent rights, and t
31、he risk of infringement of such rights, is entirely their own responsibility. Furtherinformation may be obtained from the IEEE Standards Association.vi Copyright 2009 IEEE. All rights reserved.ParticipantsAt the time this amendment was submitted to the IEEE-SA for approval, the IEEE 802.1 Working Gr
32、ouphad the following membership: Tony Jeffree, ChairPaul Congdon, Vice ChairStephen Haddock, Chair, Interworking Task GroupJohn Messenger, EditorBrian Hassink, MIB EditorZehavit AlonSiamack Ayandeh Jan BialkowskiRob BoatrightJean-Michel BonnamyPaul BottorffRudolf Brandner Craig W. CarlsonWeiying Che
33、ngRao Cherukuri Jin-Seek ChoiDiego CrupnicoffClaudio DesantiZhemin DingLinda Dunbar Hesham M. ElbakouryDavid Elie-Dit-CosaqueJanos FarkasDonald FedykNorman FinnRobert FrazierJohn FullerGeoffrey GarnerAnoop GhanwaniFranz GoetzYannick Le GoffEric GrayKaranvir GrewalCraig Gunther Mitch GusatAsif Hazari
34、kaCharles HudsonRomain InslerAbhay KarandikarPrakash KashyapHal Keen Keti KilcreaseDoyeon KimYongbum KimPhilippe KleinMike KoVinod KumarBruce Kwan Kari LaihonenAshvin LakshmikanthaMichael LererMarina LipshteynGael MaceBen Mack-CraneDavid MartinAlan McGuireJames McIntosh Menucher MenucheryGabriel Mon
35、tenegroMatthew MoraJohn MorrisEric MultanenKevin NolishDon OConnorDavid Olsen Donald PannellGlenn ParsonsJoseph PelissierDavid PetersonHayim PoratMax PritikinKaren RandallJosef RoeseDerek J. RohdeDan Romascanu Jessy V. RouyerJonathan SadlerAli SajassiPanagiotis SaltsidisJoseph Salowey Satish SatheJo
36、hn Sauer Michael SeamanKoichiro Seto Himanshu Shah Nurit Sprecher Kevin B. Stanton Robert A. Sultan Muneyoshi SuzukiMichael Johas TeenerPatricia ThalerOliver ThorpManoj WadekarYuehua WeiBrian WeisMartin WhiteBert WijnenMichael D. WrightChien-Hsien WuKen YoungGlen ZornCopyright 2009 IEEE. All rights
37、reserved. viiThe following members of the individual balloting committee voted on this standard. Balloters may havevoted for approval, disapproval, or abstention. When the IEEE-SA Standards Board approved this standard on 9 December 2009, it had the followingmembership:Robert M. Grow, ChairThomas Pr
38、evost, Vice ChairSteve M. Mills, Past ChairJudith Gorman, Secretary*Member EmeritusAlso included are the following nonvoting IEEE-SA Standards Board liaisons:Howard L. Wolfman, TAB RepresentativeMichael Janezic, NIST RepresentativeSatish Aggarwal, NRC RepresentativeMichelle TurnerIEEE Standards Prog
39、ram Manager, Document DevelopmentKathryn CushIEEE Standards Program Manager, Technical Program DevelopmentButch Anton Khin Mi Mi Aung Juan Carreon Keith Chow Thomas Dineen Linda Dunbar Sourav Dutta Donald Fedyk C. FitzgeraldYukihiro Fujimoto Michael Geipel James Gilb Randall Groves C. GuyStephen Had
40、dock John Hawkins Atsushi Ito Raj Jain Tony Jeffree Shinkyo Kaku Piotr Karocki Stuart J. Kerry Chad Kiger Yongbum Kim John Lemon Michael Lerer Li LiWilliam Lumpkins Thomas Mack-Crane Arthur Marris David Martin Marco Mascitto Alan Mcguire Jonathon Mclendon John Messenger Gary Michel Jose Morales Mich
41、ael S. Newman Satoshi Obara Maximilian Riegel Robert Robinson Benjamin Rolfe Jessy V. Rouyer Randall Safier John Sauer Bartien Sayogo Michael Seaman Kapil Sood Thomas Starai Rene StruikWalter Struppler Robert Sultan Joseph Tardo William Taylor Patricia Thaler Geoffrey ThompsonPrabodh Varshney Oren Y
42、uen John BarrKaren BartlesonVictor BermanTed BurseRichard DeBlasioAndy DrozdMark EpsteinAlexander GelmanJim HughesRichard H. HulettYoung Kyun KimJoseph L. Koepfinger*John KulickDavid J. LawTed OlsenGlenn ParsonsRonald C. PetersenNarayanan RamachandranJon Walter RosdahlSam Sciacca Copyright 2009 IEEE
43、. All rights reserved. ixContents1. Overview 21.1 Scope 22. References 33. Definitions . 54. Abbreviations. 75. Conformance 95.2 Conformant components and equipment . 95.11 Backbone Edge Bridge conformance 95.14 VLAN-unaware Bridge component requirements. 105.15 TPMR component conformance 105.16 TPM
44、R conformance. 115.17 T-component conformance 116. Support of the MAC Service in VLANs 136.5 Quality of service maintenance 136.10 Support of the ISS/EISS by Provider Instance Ports . 136.20 Support of the ISS with signaled priority 148. Principles of bridge operation 178.5 Bridge Port Transmit and
45、Receive. 178.6 The Forwarding Process 198.13 Addressing . 2212. VLAN Bridge Management. 2312.19 TPMR managed objects. 2317. Management Information Base 3323. MAC status propagation 5123.1 Model of operation. 5323.2 MAC status protocol (MSP) overview 5423.3 MAC status protocol state machines . 5823.4
46、 State machine timers 6023.5 MSP performance parameters 6023.6 State machine variables . 6123.7 State machine procedures 6323.8 Status Transition state machine .6323.9 Status Notification state machine 6323.10 Receive Process . 6323.11 Transmit Process 6423.12 Management of MSP . 6423.13 MSPDU trans
47、mission, addressing, and protocol identification. 6523.14 Representation and encoding of octets 6623.15 MSPDU structure. 6623.16 Validation of received MSPDUs . 67x Copyright 2009 IEEE. All rights reserved.23.17 Other MSP participants 6725. Support of the MAC Service by Provider Backbone Bridged Net
48、works 6925.2 Customer service interface. 7125.11 Transparent service interface . 71Annex A (normative)PICS proforma. 75A.5 Major capabilities 75A.5 Major capabilities 75A.5 Major capabilities 75A.7 Relay and filtering of frames . 77A.8 Basic Filtering Services . 77A.14 Bridge management . 78A.24 Man
49、agement Information Base (MIB) 79A.25 TPMR. 79A.26 MSP . 80Annex K (informative) TPMR use cases. 81K.1 Use case 1TPMR as User to Network Interface (UNI) demarcation device . 81K.2 Use case 2TPMRs with aggregated links 82K.3 Use case 3Multiple TPMRs . 82K.4 Special cases 83Copyright 2009 IEEE. All rights reserved. xiFiguresFigure 6-4 Provider Instance Ports 14Figure 6-12 Supporting the ISS with signaled priority 15Figure 8-8 Bridge Port Transmit and Receive . 17Figure 8-9 TPMR Port Transmit and Receive . 18Figure 23-1 TPMR connecting two Bridge Ports 51Figure 23-
