1、 IEEE Standard for Local and metropolitan area networks Bridges and Bridged Networks Amendment 25: Enhancements for Scheduled Traffic Sponsored by the LAN/MAN Standards Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Computer Society IEEE Std 802.1Qbv-2015 (Amendment to IEEE Std 802.1Q
2、2014 as amended by IEEE Std 802.1Qca-2015, IEEE Std 802.1Qcd-2015, and IEEE Std 802.1Q-2014/Cor 1-2015) IEEE Std 802.1Qbv-2015(Amendment toIEEE Std 802.1Q-2014as amended byIEEE Std 802.1Qca-2015,IEEE Std 802.1Qcd-2015, andIEEE Std 802.1Q-2014/Cor 1-2015)IEEE Standard for Local and metropolitan area
3、 networksBridges and Bridged NetworksAmendment 25: Enhancements for Scheduled TrafficSponsorLAN/MAN Standards Committeeof theIEEE Computer SocietyApproved 5 December 2015IEEE SA-Standards BoardThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyr
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33、IEEE. All rights reserved.ParticipantsAt the time this standard was submitted to the IEEE-SA Standards Board for approval, the IEEE 802.1Working Group had the following membership:Glenn Parsons, ChairJohn Messenger, Vice ChairTony Jeffree, EditorMichael Johas Teener, Chair, Time Sensitive Networking
34、 Task GroupJanos Farkas, Vice Chair, Time Sensitive Networking Task GroupChristian BoigerPaul BottorffDavid ChenFeng ChenWeiying ChengRodney CummingsNorman FinnGeoffrey GarnerCraig GuntherStephen HaddockMark HantelMarc HolnessHal KeenStephan KehrerMarcel KiesslingPhilippe KleinJouni KorhonenYizhou L
35、iChristophe ManginTom McBeathJames McIntoshHiroki NakanoBob NoseworthyDonald R. PannellWalter PienciakKaren RandallMaximilian RiegelDan RomascanuJessy RouyerPanagiotis SaltsidisMichael SeamanDaniel SextonJohannes SpechtWilfried SteinerPatricia ThalerDavid ThornburgJeremy TouvePaul UnbehagenKarl Webe
36、rBrian WeisJordon WoodsHelge ZinnerJuan Carlos Zuniga7Copyright 2016 IEEE. All rights reserved.The following members of the individual balloting committee voted on this standard. Balloters may havevoted for approval, disapproval, or abstention. Thomas AlexanderButch AntonLee ArmstrongChristian Boige
37、rAshley ButterworthWilliam ByrdWilliam CarneyJuan CarreonMinho CheongKeith ChowCharles CookRodney CummingsPatrick DiamondYezid DonosoSourav DuttaRichard EdgarLiu FangfangJanos FarkasHans-Joachim FischerMichael FischerYukihiro FujimotoDevon GayleGregory GilloolyEric W. GrayDavid GregsonRandall Groves
38、Craig GuntherStephen HaddockMarco HernandezWerner HoelzlNoriyuki IkeuchiSergiu IordanescuAtsushi ItoTony JeffreeMichael Johas TeenerPeter JonesVincent JonesAdri JovinShinkyo KakuPiotr KarockiStuart KerryYongbum KimJouni KorhonenBruce KraemerArthur H. LightElvis MaculubaArthur MarrisJohn MessengerCha
39、rles MoorwoodMichael NewmanNick S. A. NikjooSatoshi ObaraArumugam PaventhanAlon RegevRobert RobinsonDan RomascanuJessy RouyerBartien SayogoMichael SeamanShusaku ShimadaVeselin SkendzicKevin StantonThomas StaraiEugene StoudenmireRene StruikWalter StrupplerMark-Rene UchidaDmitri VarsanofievPrabodh Var
40、shneyGeorge VlantisKhurram WaheedHung-Yu WeiAndreas WolfChun Yu Charles WongOren Yuen8Copyright 2016 IEEE. All rights reserved.When the IEEE-SA Standards Board approved this standard on 5 December 2015, it had the followingmembership:John D. Kulick, ChairJon Walter Rosdahl, Vice ChairRichard H. Hule
41、tt, Past ChairKonstantinos Karachalios, Secretary*Member EmeritusMasayuki AriyoshiTed BurseStephen DukesJean-Philippe FaureJ. Travis GriffithGary HoffmanMichael Janezic Joseph L. Koepfinger*David J. LawHung LingAndrew MylesT. W. OlsenGlenn ParsonsRonald C. PetersenAnnette D. ReillyStephen J. Shellha
42、mmerAdrian P. StephensYatin TrivediPhillip WinstonDon WrightYu YuanDaidi Zhong9Copyright 2016 IEEE. All rights reserved.IntroductionThis amendment to IEEE Std 802.1Q-2014 provides enhancements to the forwarding process that supportscheduled traffic.This standard contains state-of-the-art material. T
43、he area covered by this standard is undergoing evolution.Revisions are anticipated within the next few years to clarify existing material, to correct possible errors, andto incorporate new related material. Information on the current revision state of this and other IEEE 802standards may be obtained
44、 fromSecretary, IEEE-SA Standards Board445 Hoes LanePiscataway, NJ 08854-4141USAThis introduction is not part of IEEE Std 802.1Qbv-2015, IEEE Standard for Local and metropolitan areanetworksBridges and Bridged NetworksAmendment 25: Enhancements for Scheduled Traffic.10Copyright 2016 IEEE. All rights
45、 reserved.Contents2. Normative references 143. Definitions 154. Abbreviations 165. Conformance . 175.4 VLAN Bridge component requirements 175.13 MAC Bridge component requirements 175.24 EVB station requirements 175.25 End station requirementsenhancements for scheduled traffic . 176. Support of the M
46、AC Service 186.5 Quality of service (QoS) maintenance. 188. Principles of bridge operation . 198.6 The Forwarding Process 1912. Bridge management 3012.29 Managed objects for scheduled traffic. 3017. Management Information Base (MIB) . 3317.2 Structure of the MIB 3317.3 Relationship to other MIBs 341
47、7.4 Security considerations 3517.7 MIB modules . 36Annex A (normative) PICS proformaBridge implementations 49Annex B (normative) PICS proformaEnd station implementations . 51Annex Q (informative) Traffic scheduling . 5211Copyright 2016 IEEE. All rights reserved.FiguresFigure 8-12Transmission selecti
48、on with gates. 20Figure 8-13Scheduled traffic state machinesoverview and relationships 22Figure 8-14Cycle Timer state machine 23Figure 8-15List Execute state machine 24Figure 8-16List Config state machine . 25Figure Q-1Establishing a guard band 53Figure Q-2Using gate operations. 5412Copyright 2016 I
49、EEE. All rights reserved.TablesTable 8-6Gate operations. 21Table 12-28The Gate Parameter Table 30Table 17-28IEEE8021-ST-MIB Structure and relationship to this standard. 3313Copyright 2016 IEEE. All rights reserved.IEEE Standard for Local and metropolitan area networksBridges and Bridged NetworksAmendment 25: Enhancements for Scheduled TrafficIMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, health, orenvironmental protection, or ensure against interference with or from other devices or networks.Implementers of I
