1、 IEEE Standard for Local and metropolitan area networks Bridges and Bridged Networks Amendment 26: Frame Preemption Sponsored by the LAN/MAN Standards Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Computer Society IEEE Std 802.1Qbu-2016(Amendment toIEEE Std 802.1Q-2014) IEEE Std 802.
2、1Qbu-2016(Amendment to IEEE Std 802.1Q-2014)IEEE Standard for Local and metropolitan area networksBridges and Bridged NetworksAmendment 26: Frame PreemptionSponsorLAN/MAN Standards Committee of the IEEE Computer SocietyApproved 30 June 2016IEEE-SA Standards BoardThe Institute of Electrical and Elect
3、ronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2016 by the Institute of Electrical and Electronics Engineers, Inc.All rights reserved. Published 30 August 2016. Printed in the United States of America.IEEE and 802 are registered trademarks in the U.S. Patent fitness for a
4、 particular purpose; non-infringement; and quality, accuracy, effectiveness, currency, or completeness of material. In addition, IEEE disclaims any and all conditions relating to: results; and workmanlike effort. IEEE standards documents are supplied “AS IS” and “WITH ALL FAULTS.”Use of an IEEE stan
5、dard is wholly voluntary. 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
6、and issued is subject to change brought about through developments in the state of the art and comments received from users of the standard. In publishing and making its standards available, IEEE is not suggesting or rendering professional or other services for, or on behalf of, any person or entity
7、 nor is IEEE undertaking to perform any duty owed by any other person or entity to another. Any person utilizing any IEEE Standards document, should rely upon his or her own independent judgment in the exercise of reasonable care in any given circumstances or, as appropriate, seek the advice of a co
8、mpetent professional in determining the appropriateness of a given IEEE standard.IN NO EVENT SHALL IEEE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO: PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROF
9、ITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE PUBLICATION, USE OF, OR RELIANCE UPON ANY STANDARD, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE AND REG
10、ARDLESS OF WHETHER SUCH DAMAGE WAS FORESEEABLE.IEEE Std 802.1Qbu-2016IEEE Standard for Local and Metropolitan Area NetworksBridges and Bridged NetworksAmendment 26: Frame Preemption4Copyright 2016 IEEE. All rights reserved.Translations The IEEE consensus development process involves the review of do
11、cuments in English only. In the event that an IEEE standard is translated, only the English version published by IEEE should be considered the approved IEEE standard.Official statements A statement, written or oral, that is not processed in accordance with the IEEE-SA Standards Board Operations Manu
12、al shall not be considered or inferred to be the official position of IEEE or any of its committees and shall not be considered to be, or be relied upon as, a formal position of IEEE. At lectures, symposia, seminars, or educational courses, an individual presenting information on IEEE standards shal
13、l make it clear that his or her views should be considered the personal views of that individual rather than the formal position of IEEE. Comments on standardsComments for revision of IEEE Standards documents are welcome from any interested party, regardless of membership affiliation with IEEE. Howe
14、ver, IEEE does not provide consulting information or advice pertaining to IEEE Standards documents. Suggestions for changes in documents should be in the form of a proposed change of text, together with appropriate supporting comments. Since IEEE standards represent a consensus of concerned interest
15、s, it is important that any responses to comments and questions also receive 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 comments or questions except in those ca
16、ses where the matter has previously been addressed. For the same reason, IEEE does not respond to interpretation requests. Any person who would like to participate in revisions to an IEEE standard is welcome to join the relevant IEEE working group.Comments on standards should be submitted to the fol
17、lowing address:Secretary, IEEE-SA Standards Board 445 Hoes Lane Piscataway, NJ 08854 USALaws and regulations Users of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the provisions of any IEEE Standards document does not imply compliance to any applicable
18、 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 constr
19、ued as doing so.CopyrightsIEEE draft and approved standards are copyrighted by IEEE under U.S. and international copyright laws. They are made available by IEEE and are adopted for a wide variety of both public and private uses. These include both use, by reference, in laws and regulations, and use
20、in private self-regulation, standardization, and the promotion of engineering practices and methods. By making these documents available for use and adoption by public authorities and private users, IEEE does not waive any rights in copyright to the documents.IEEE Std 802.1Qbu-2016IEEE Standard for
21、Local and Metropolitan Area NetworksBridges and Bridged NetworksAmendment 26: Frame Preemption5Copyright 2016 IEEE. All rights reserved.Photocopies Subject to payment of the appropriate fee, IEEE will grant users a limited, non-exclusive license to photocopy portions of any individual standard for c
22、ompany or organizational internal use or individual, non-commercial use only. To arrange for payment of licensing fees, please contact Copyright Clearance Center, Customer Service, 222 Rosewood Drive, Danvers, MA 01923 USA; +1 978 750 8400. Permission to photocopy portions of any individual standard
23、 for educational classroom use can also be obtained through the Copyright Clearance Center.Updating of IEEE Standards documents Users of IEEE Standards documents 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 thr
24、ough 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. Every IEEE standard is subjected to review at least every ten years. When a docum
25、ent is more than ten years old and has not undergone a revision process, it is reasonable to conclude that its contents, although still of some value, do not wholly reflect the present state of the art. Users are cautioned to check to determine that they have the latest edition of any IEEE standard.
26、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-SA Website at http:/ieeexplore.ieee.org/browse/standards/collection/ieee or contact IEEE at the address listed previously. F
27、or more information about the IEEE SA or IEEEs standards development process, visit the IEEE-SA Website at http:/standards.ieee.org.Errata Errata, if any, for all IEEE standards can be accessed on the IEEE-SA Website at the following URL: http:/standards.ieee.org/findstds/errata/index.html. Users ar
28、e encouraged to check this URL for errata periodically.PatentsAttention 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 by the IEEE with respect to the existence or val
29、idity of any patent rights in connection therewith. If a patent holder or patent applicant has filed a statement of assurance via an Accepted Letter of Assurance, then the statement is listed on the IEEE-SA Website at http:/standards.ieee.org/about/sasb/patcom/patents.html. Letters of Assurance may
30、indicate whether the Submitter is willing or unwilling to grant licenses under patent 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.Essential Patent Cl
31、aims may exist for which a Letter of Assurance 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 co
32、nditions provided in connection with submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is
33、 entirely their own responsibility. Further information may be obtained from the IEEE Standards Association.IEEE Std 802.1Qbu-2016IEEE Standard for Local and Metropolitan Area NetworksBridges and Bridged NetworksAmendment 26: Frame Preemption6Copyright 2016 IEEE. All rights reserved.ParticipantsAt t
34、he time this standard was completed, the IEEE 802.1 working group had the following membership:Glenn Parsons, ChairJohn Messenger, Vice-ChairMichael Johas Teener, Chair, Time Sensitive Networking Task GroupTony Jeffree, EditorThe following members of the individual balloting committee voted on this
35、standard. Balloters may have voted for approval, disapproval, or abstention. Christian Boiger Paul Bottorff David Chen Feng Chen Weiying Cheng Rodney CummingsJanos FarkasNorman FinnGeoffrey GarnerEric GrayCraig GuntherStephen Haddock Mark HantelMarc HolnessHal KeenStephan KehrerMarcel Kiessling Phil
36、ippe KleinJouni KorhonenYizhou Li Christophe Mangin Tom McBeathJames McIntoshHiroki Nakano Bob NoseworthyDonald R. Pannell Walter Pienciak Karen Randall Maximilian RiegelDan RomascanuJessy Rouyer Panagiotis Saltsidis Michael Seaman Daniel Sexton Johannes Specht Wilfried Steiner Patricia Thaler David
37、 Thornburg Jeremy Touve Paul Unbehagen Karl Weber Brian Weis Jordon Woods Helge Zinner Juan Carlos Zuniga Thomas AlexanderButch AntonLee ArmstrongStefan AustChristian BoigerNancy BravinWilliam ByrdJuan CarreonRodney CummingsJanos FarkasYukihiro FujimotoDavid GregsonRandall GrovesStephen HaddockMarek
38、 HajduczeniaJerome HenryMarco HernandezGuido HiertzWerner HoelzlC. HuntleyNoriyuki IkeuchiAtsushi ItoTony JeffreeMichael Johas TeenerAdri JovinShinkyo KakuPiotr KarockiStuart KerryYongbum KimRobert LandmanMark LaubachDavid LewisArthur H. LightWilliam LumpkinsMichael LynchElvis MaculubaArthur MarrisJ
39、onathon MclendonRichard MellitzCharles MoorwoodMichael NewmanNick S.A. NikjooSatoshi ObaraAlon RegevRobert RobinsonBenjamin RolfeDan RomascanuJessy RouyerLarry SambergBartien SayogoMichael SeamanDavid SolomonKevin StantonThomas StaraiEugene StoudenmireWalter StrupplerMichael SwearingenPatricia Thale
40、rMark-Rene UchidaLorenzo VangelistaDmitri VarsanofievGeorge VlantisKhurram WaheedStephen WebbKarl WeberHung-Yu WeiNatalie WienckowskiOren YuenZhen ZhouIEEE Std 802.1Qbu-2016IEEE Standard for Local and Metropolitan Area NetworksBridges and Bridged NetworksAmendment 26: Frame Preemption7Copyright 2016
41、 IEEE. All rights reserved.When the IEEE-SA Standards Board approved this standard on 30 June 2016, it had the following membership:Jean-Philippe Faure, ChairTed Burse, Vice-ChairJohn D. Kulick, Past ChairKonstantinos Karachalios, Secretary*Member EmeritusChuck AdamsMasayuki AriyoshiStephen DukesJia
42、nbin FanJ. Travis GriffithGary HoffmanRonald W. HotchkissMichael Janezic Joseph L. Koepfinger*Hung LingKevin LuAnnette D. ReillyGary RobinsonMehmet UlemaYingli WenHoward WolfmanDon WrightYu YuanDaidi ZhongIEEE Std 802.1Qbu-2016IEEE Standard for Local and Metropolitan Area NetworksBridges and Bridged
43、 NetworksAmendment 26: Frame Preemption8Copyright 2016 IEEE. All rights reserved.IntroductionThis amendment to IEEE Std 802.1Q-2014 provides enhancements to the forwarding process that support frame preemption.This standard contains state-of-the-art material. The area covered by this standard is und
44、ergoing 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 fromSecretary, IEEE-SA Standards Bo
45、ard445 Hoes LanePiscataway, NJ 08854USAThis introduction is not part of IEEE Std 802.1Qbu-2016, IEEE Standard for Local and metropolitan area networksMedia Access Control (MAC) Bridges and Virtual Bridged Local Area NetworksAmendment 26: Frame Preemption.IEEE Std 802.1Qbu-2016IEEE Standard for Local
46、 and Metropolitan Area NetworksBridges and Bridged NetworksAmendment 26: Frame Preemption9Copyright 2016 IEEE. All rights reserved.Contents2. Normative references. 133. Definitions . 144. Abbreviations. 155. Conformance 165.4 VLAN Bridge component requirements 165.13 MAC Bridge component requirement
47、s 165.26 End station requirementsenhancements for frame preemption 166. Support of the MAC Service . 176.7 Support of the Internal Sublayer Service by specific MAC procedures 178. Principles of bridge operation 188.6 The Forwarding Process 1812. Bridge management . 2012.30 Managed objects for frame
48、preemption . 2017. Management Information Base (MIB) 2217.2 Structure of the MIB 2217.3 Relationship to other MIBs 2217.4 Security considerations 2317.7 MIB modules . 23Annex A (normative) PICS proformaBridge implementations . 43A.5 Major capabilities 43A.14 Bridge management . 43A.24 Management Inf
49、ormation Base (MIB) 43A.44 Frame preemption 44Annex B (normative) PICS proformaEnd station implementations 45B.5 Major capabilities 45B.15 Scheduled traffic 45Annex Q (informative) Preemption and IEEE Std 802.1AE MAC Security. 46Annex R (informative) Preemption and scheduled traffic. 48R.1 Scheduling used in isolation 48R.2 Preemption used in isolation 48R.3 Scheduling and preemption used in combination, no HOLD/RELEASE . 49R.4 Scheduling and preemption used in combination, with HOLD/RELEASE 49R.5 Bandwidth allocation and express traffic. 50Annex S (
