IEEE Std 802.1Qbb-2011.pdf

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IEEE Std 802.1Qbb™-2011, front cover

Title page

Introduction

Notice to users

Laws and regulations

Copyrights

Updating of IEEE documents

Errata

Interpretations

Patents

Participants

Contents

Figures

Tables

Important notice

1. Overview

1.3 Introduction

2. References

3. Definitions

4. Abbreviations

5. Conformance

5.4 VLAN-aware Bridge component requirements

5.4.1 VLAN-aware Bridge component options

5.10 Provider Bridge conformance

5.11 System requirements for Priority-based Flow Control

6. Support of the MAC Service

6.6 Internal Sublayer Service

6.6.4 Stream Reservation Protocol (SRP) Domain status parameters

6.6.5 Control primitives and parameters

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 (CSMA/CD)

8. Principles of bridge operation

8.6 The Forwarding Process

8.6.8 Transmission selection

12. Bridge management

12.22 SRP entities

12.23 Priority-based Flow Control objects

17. Management Information Base (MIB)

17.2 Structure of the MIB

17.2.16 Structure of the MIRP MIB

17.2.17 Structure of the Priority-based Flow Control MIB

17.3 Relationship to other MIB modules

17.3.16 Relationship of the IEEE8021-MIRP-MIB to other MIB modules

17.3.17 Relationship of the Priority-based Flow Control MIB to other MIB modules

17.4 Security considerations

17.4.16 Security considerations of the IEEE8021-MIRP-MIB

17.4.17 Security considerations for the Priority-based Flow Control MIB

17.7 MIB modules

17.7.16 MIRP MIB module

17.7.17 Priority-based Flow Control MIB module

36. Priority-based Flow Control

36.1 Priority-based Flow Control operation

36.1.1 Overview

36.1.2 PFC Primitives

36.1.3 Detailed specification of PFC operation

36.2 PFC aware system queue functions

36.2.1 PFC Initiator

36.2.2 PFC Receiver

Annex A (normative) PICS proforma—Bridge implementations

Annex N (normative) Support for PFC in link layers without MAC Control

Annex O (informative) Buffer requirements for Priority-based Flow Control

IEEE Standard for Local and metropolitan area networks— Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks— Amendment 17: Priority-based Flow Control IEEE Computer Society Sponsored by the LAN/MAN Standards Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 30 September 2011 IEEE Std 802.1Qbb™-2011 (Amendment to IEEE Std 802.1Q™-2011 as amended by IEEE 802.1Qbe™-2011 and IEEE Std 802.1Qbc™-2011) Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

IEEE Std 802.1Qbb™-2011 (Amendment to IEEE Std 802.1Q™-2011 as amended by IEEE Std 802.1Qbe™-2011 and IEEE Std 802.1Qbc™-2011) IEEE Standard for Local and metropolitan area networks— Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks— Amendment 17: Priority-based Flow Control Sponsor LAN/MAN Standards Committee of the IEEE Computer Society Approved 16 June 2011 IEEE-SA Standards Board Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

Abstract: This amendment to IEEE Std 802.1Q-2011 specifies protocols, procedures, and managed objects that enable flow control per traffic class on IEEE 802® point-to-point full duplex links. This is achieved by a mechanism similar to IEEE 802.3 Annex 31B PAUSE, but operating on individual priorities. Keywords: flow control, IEEE 802.1Qbb, LANs, local area networks, MAC Bridges, priority, transparent bridging, VLANs The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright © 2011 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 30 September 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. ISBN 978-0-7381-6657-5 PDF: Print: ISBN 978-0-7381-6658-2 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. STD97113 STDPD97113 Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Association (IEEE-SA) Standards Board. The IEEE 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 the consensus development process, the IEEE does not independently evaluate, test, or verify the 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 use of the material contained herein is free from patent infringement. IEEE Standards documents are supplied “AS IS.” 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. 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Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

Introduction This introduction is not part of IEEE Std 802.1Qbb-2011, IEEE Standard for Local and metropolitan area networks— Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks—Amendment 17: Priority-based Flow Control. This amendment to IEEE Std 802.1Q-2011 provides Priority-based Flow Control capabilities useful to Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks to enable flow control per traffic class on IEEE 802® point-to-point full duplex links. 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, NJ 08854-4141 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. 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 at http://ieeexplore.ieee.org/xpl/standards.jsp, or contact the IEEE at the address listed previously. For more information about the IEEE Standards Association or the IEEE standards development process, visit the IEEE-SA website at http://standards.ieee.org. iv Copyright © 2011 IEEE. All rights reserved Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

Errata Errata, if any, for this and all other standards can be accessed at the following URL: http:// standards.ieee.org/findstds/errata/index.html. Users are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at the following URL: http://standards.ieee.org/findstds/interps/ 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 rates, terms, and conditions of the license agreements offered by patent holders or patent applicants. Further information may be obtained from the IEEE Standards Department. Participants At the time this amendment was submitted to the IEEE-SA Standards Board for approval, the IEEE 802.1 Working Group had the following membership: Anthony Jeffree, Chair Paul Congdon, Vice Chair Claudio DeSanti, Editor Patricia Thaler, Chair, Data Center Bridging Task Group Zehavit Alon Yafan An Ting Ao Peter Ashwood-Smith Christian Boiger Paul Bottorff Rudolf Brandner Craig Carlson Claudio DeSanti Zhemin Ding Donald Eastlake Janos Farkas Donald Fedyk Norman Finn Ilango Ganga Geoffrey Garner Anoop Ghanwani Eric Gray Yingjie Gu Craig Gunther Hitoshi Hayakawa Hal Keen Yongbum Kim Philippe Klein Oliver Kleineberg Michael Krause Li Li Jeff Lynch John Messenger John Morris Eric Multanen David Olsen Donald Pannell Glenn Parsons Joseph Pelissier Rene Raeber Karen Randall Dan Romascanu Jessy Rouyer Panagiotis Saltsidis Michael Seaman Rakesh Sharma Kevin B. Stanton Robert Sultan Michael Teener Patricia Thaler Chait Tumuluri Maarten Vissers Copyright © 2011 IEEE. All rights reserved. v Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

The following members of the individual balloting committee voted on this amendment. Balloters may have voted for approval, disapproval, or abstention. Thomas Alexander Danilo Antonelli Madhusudan Banavara Hugh Barrass Tomo Bogataj Nancy Bravin Edward Carley James Carlo Juan Carreon Keith Chow Charles Cook Claudio DeSanti Wael Diab Thomas Dineen Carlo Donati Sourav Dutta Frank Effenberger Jose Dominic Espejo C. Fitzgerald Yukihiro Fujimoto Ilango Ganga Ignacio Marin Garcia Devon Gayle Anoop Ghanwani Randall Groves C. Guy Marek Hajduczenia John Hawkins Ian Hilliard Ryan Hirth Akio Iso Atsushi Ito Raj Jain Anthony Jeffree Vincent Jones Shinkyo Kaku Piotr Karocki Stuart J. Kerry Max Kicherer Yongbum Kim Bruce Kraemer Glen Kramer Bruce Kwan Juan L. Lazaro Brian L’Ecuyer Li Li Greg Luri Elvis Maculuba Mark Maloney Arthur Marris Peter Martini Sean Maschue Jonathon McLendon Jose Morales Joseph Moran Shimon Muller Michael S. Newman Glenn Parsons Mark Pilip Subburajan Ponnuswamy Maximilian Riegel Robert Robinson Jessy Rouyer Randall Safier Peter Saunderson Bartien Sayogo Rich Seifert Gil Shultz Kapil Sood Manikantan Srinivasan Thomas Starai Walter Struppler Joseph Tardo Michael Johas Teener Patricia Thaler David Thompson Mark-Rene Uchida Prabodh Varshney Peter Yan Oren Yuen Wenhao Zhu When the IEEE-SA Standards Board approved this amendment on 16 June 2011, it had the following membership: Richard H. Hulett, Chair John Kulick, Vice Chair Robert M. Grow, Past President Judith Gorman, Secretary Masayuki Ariyoshi William Bartley Ted Burse Clint Chaplin Wael Diab Jean-Philippe Faure Alexander Gelman Paul Houzé *Member Emeritus Jim Hughes Joseph L. Koepfinger* David J. Law Thomas Lee Hung Ling Oleg Logvinov Ted Olsen Gary Robinson Jon Walter Rosdahl Sam Sciacca Mike Seavey Curtis Siller Phil Winston Howard Wolfman Don Wright Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative IEEE Standards Program Manager, Document Development Michelle Turner IEEE Standards Program Manager, Technical Program Development Kathryn Bennett vi Copyright © 2011 IEEE. All rights reserved Authorized licensed use limited to: DUKE UNIVERSITY. Downloaded on May 04,2012 at 07:18:42 UTC from IEEE Xplore. Restrictions apply.

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