IEEE Std 802.1Qbu-2016.pdf

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IEEE Std 802.1Qbu-2016 Front Cover

Title page

Important Notices and Disclaimers Concerning IEEE Standards Documents

Participants

Introduction

Contents

Tables

Important Notice

2. Normative references

3. Definitions

4. Abbreviations

5. Conformance

5.4 VLAN Bridge component requirements

5.4.1 VLAN Bridge component options

5.13 MAC Bridge component requirements

5.13.1 MAC Bridge component options

5.26 End station requirements—enhancements for frame preemption

6. Support of the MAC Service

6.7 Support of the Internal Sublayer Service by specific MAC procedures

6.7.1 Support of the Internal Sublayer Service by IEEE Std 802.3 (Ethernet)

6.7.2 Frame preemption

8. Principles of bridge operation

8.6 The Forwarding Process

8.6.8 Transmission selection

12. Bridge management

12.30 Managed objects for frame preemption

12.30.1 Frame Preemption Parameter table

17. Management Information Base (MIB)

17.2 Structure of the MIB

17.2.23 Structure of the IEEE8021-Preemption-MIB

17.3 Relationship to other MIBs

17.3.23 Relationship of the IEEE8021-Preemption-MIB to other MIBs

17.4 Security considerations

17.4.23 Security considerations of the IEEE8021-ST-MIB

17.7 MIB modules

17.7.22 Definitions for the IEEE8021-ST-MIB module

17.7.23 Definitions for the IEEE8021-Preemption-MIB module

Annex A (normative) PICS proforma—Bridge implementations

A.5 Major capabilities

A.14 Bridge management

A.24 Management Information Base (MIB)

A.44 Frame preemption

Annex B (normative) PICS proforma—End station implementations

B.5 Major capabilities

B.15 Scheduled traffic

Annex Q (informative) Preemption and IEEE Std 802.1AE MAC Security

Annex R (informative) Preemption and scheduled traffic

R.1 Scheduling used in isolation

R.2 Preemption used in isolation

R.3 Scheduling and preemption used in combination, no HOLD/RELEASE

R.4 Scheduling and preemption used in combination with HOLD/RELEASE

R.5 Bandwidth allocation and express traffic

Annex S (informative) Bibliography

IEEE Standard for Local and metropolitan area networks— Bridges and Bridged Networks— Amendment 26: Frame Preemption IEEE Computer Society LAN/MAN Standards Committee Sponsored by the IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Std 802.1Qbu™-2016 (Amendment to IEEE Std 802.1Q™-2014)

IEEE Std 802.1Qbu™-2016 (Amendment to IEEE Std 802.1Q™-2014) IEEE Standard for Local and metropolitan area networks— Bridges and Bridged Networks— Amendment 26: Frame Preemption Sponsor LAN/MAN Standards Committee of the IEEE Computer Society Approved 30 June 2016 IEEE-SA Standards Board

Abstract: Enhancements to the forwarding process that support frame preemption are provided in this amendment to IEEE Std 802.1Q-2014. Keywords: Bridged Local Area Networks, IEEE 802.1Q™, LANs, local area networks, MAC Bridges, metropolitan area networks, preemption, 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 © 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 & Trademark Office, owned by the Institute of Electrical and Electronics Engineers, Incorporated. ISBN 978-1-5044-2257-4 ISBN 978-1-5044-2258-1 PDF: Print: IEEE prohibits discrimination, harassment, and bullying. For more information, visit http://www.ieee.org/web/aboutus/ whatis/policies/p9-26.html. 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. STD21074 STDPD21074 Copyright © 2016 IEEE. All rights reserved. 2

IEEE Standard for Local and Metropolitan Area Networks—Bridges and Bridged Networks— IEEE Std 802.1Qbu-2016 Amendment 26: Frame Preemption Important Notices and Disclaimers Concerning IEEE Standards Documents IEEE documents are made available for use subject to important notices and legal disclaimers. These notices and disclaimers, or a reference to this page, appear in all standards and may be found under the heading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Standards Documents.” Notice and Disclaimer of Liability Concerning the Use of IEEE Standards Documents IEEE Standards documents (standards, recommended practices, and guides), both full-use and trial-use, are developed within IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Association (“IEEE-SA”) Standards Board. IEEE (“the Institute”) develops its standards through a consensus development process, approved by the American National Standards Institute (“ANSI”), which brings together volunteers representing varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of the Institute and participate without compensation from IEEE. While IEEE administers the process and establishes rules to promote fairness in the consensus development process, IEEE does not independently evaluate, test, or verify the accuracy of any of the information or the soundness of any judgments contained in its standards. IEEE does not warrant or represent the accuracy or content of the material contained in its standards, and expressly disclaims all warranties (express, implied and statutory) not included in this or any other document relating to the standard, including, but not limited to, the warranties of: merchantability; fitness for a 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 standard 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 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 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 competent 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 PROFITS; 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 REGARDLESS OF WHETHER SUCH DAMAGE WAS FORESEEABLE. Copyright © 2016 IEEE. All rights reserved. 3

IEEE Standard for Local and Metropolitan Area Networks—Bridges and Bridged Networks— IEEE Std 802.1Qbu-2016 Amendment 26: Frame Preemption Translations The IEEE consensus development process involves the review of documents 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 Manual 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 shall 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 standards Comments for revision of IEEE Standards documents are welcome from any interested party, regardless of membership affiliation with IEEE. However, 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 interests, 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 cases 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 following address: Secretary, IEEE-SA Standards Board 445 Hoes Lane Piscataway, NJ 08854 USA Laws 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 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. Copyrights IEEE 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 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. Copyright © 2016 IEEE. All rights reserved. 4

IEEE Standard for Local and Metropolitan Area Networks—Bridges and Bridged Networks— IEEE Std 802.1Qbu-2016 Amendment 26: Frame Preemption 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 company 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 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 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. Every IEEE standard is subjected to review at least every ten years. When a document 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. 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. For more information about the IEEE SA or IEEE’s 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 are encouraged to check this URL for errata periodically. 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 by the IEEE with respect to the existence or validity 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 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 Claims 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 conditions 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 entirely their own responsibility. Further information may be obtained from the IEEE Standards Association. Copyright © 2016 IEEE. All rights reserved. 5

IEEE Standard for Local and Metropolitan Area Networks—Bridges and Bridged Networks— IEEE Std 802.1Qbu-2016 Amendment 26: Frame Preemption Participants At the time this standard was completed, the IEEE 802.1 working group had the following membership: Glenn Parsons, Chair John Messenger, Vice-Chair Michael Johas Teener, Chair, Time Sensitive Networking Task Group Christian Boiger Paul Bottorff David Chen Feng Chen Weiying Cheng Rodney Cummings Janos Farkas Norman Finn Geoffrey Garner Eric Gray Craig Gunther Stephen Haddock Mark Hantel Marc Holness Hal Keen Tony Jeffree, Editor Stephan Kehrer Marcel Kiessling Philippe Klein Jouni Korhonen Yizhou Li Christophe Mangin Tom McBeath James McIntosh Hiroki Nakano Bob Noseworthy Donald R. Pannell Walter Pienciak Karen Randall Maximilian Riegel Dan Romascanu Jessy Rouyer Panagiotis Saltsidis Michael Seaman Daniel Sexton Johannes Specht Wilfried Steiner Patricia Thaler David Thornburg Jeremy Touve Paul Unbehagen Karl Weber Brian Weis Jordon Woods Helge Zinner Juan Carlos Zuniga The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. Thomas Alexander Butch Anton Lee Armstrong Stefan Aust Christian Boiger Nancy Bravin William Byrd Juan Carreon Rodney Cummings Janos Farkas Yukihiro Fujimoto David Gregson Randall Groves Stephen Haddock Marek Hajduczenia Jerome Henry Marco Hernandez Guido Hiertz Werner Hoelzl C. Huntley Noriyuki Ikeuchi Atsushi Ito Tony Jeffree Michael Johas Teener Adri Jovin Shinkyo Kaku Piotr Karocki Stuart Kerry Yongbum Kim Robert Landman Mark Laubach David Lewis Arthur H. Light William Lumpkins Michael Lynch Elvis Maculuba Arthur Marris Jonathon Mclendon Richard Mellitz Charles Moorwood Michael Newman Nick S.A. Nikjoo Satoshi Obara Alon Regev Robert Robinson Benjamin Rolfe Dan Romascanu Jessy Rouyer Larry Samberg Bartien Sayogo Michael Seaman David Solomon Kevin Stanton Thomas Starai Eugene Stoudenmire Walter Struppler Michael Swearingen Patricia Thaler Mark-Rene Uchida Lorenzo Vangelista Dmitri Varsanofiev George Vlantis Khurram Waheed Stephen Webb Karl Weber Hung-Yu Wei Natalie Wienckowski Oren Yuen Zhen Zhou Copyright © 2016 IEEE. All rights reserved. 6

IEEE Standard for Local and Metropolitan Area Networks—Bridges and Bridged Networks— IEEE Std 802.1Qbu-2016 Amendment 26: Frame Preemption When the IEEE-SA Standards Board approved this standard on 30 June 2016, it had the following membership: Jean-Philippe Faure, Chair Ted Burse, Vice-Chair John D. Kulick, Past Chair Konstantinos Karachalios, Secretary Chuck Adams Masayuki Ariyoshi Stephen Dukes Jianbin Fan J. Travis Griffith Gary Hoffman *Member Emeritus Ronald W. Hotchkiss Michael Janezic Joseph L. Koepfinger* Hung Ling Kevin Lu Annette D. Reilly Gary Robinson Mehmet Ulema Yingli Wen Howard Wolfman Don Wright Yu Yuan Daidi Zhong Copyright © 2016 IEEE. All rights reserved. 7

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