802.1ah-2008.pdf

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IEEE Std 802.1ah-2008 Front Cover

Abstract/Keyword

Introduction

Notice to users

Laws and regulations

Copyrights

Updating of IEEE documents

Errata

Interpretations

Patents

Participants

CONTENTS

Figures

Tables

Important Notice

1. Overview

1.1 Scope

2. Normative references

3. Definitions

4. Abbreviations

5. Conformance

5.2 Conformant components and equipment

5.3 Protocol Implementation Conformance Statement (PICS)

5.7 I-component conformance

5.7.1 I-component options

5.8 B-component conformance

5.8.1 B-component options

5.11 Backbone Edge Bridge conformance

6. Support of the MAC Service in VLANs

6.1.4 Service access points, interface stacks, and ports

6.6 Internal Sublayer Service

6.6.1 Service primitives and parameters

6.8 Enhanced Internal Sublayer Service

6.8.1 Service primitives

6.9 Support of the EISS

6.9.1 Data indications

6.9.2 Data requests

6.10 Support of the EISS by Provider Instance Ports

6.10.1 Data indications

6.10.2 Data requests

6.10.3 Priority Code Point encoding

6.11 Support of the EISS by Customer Backbone Ports

6.11.1 Data indications

6.11.2 Data requests

6.11.3 Priority Code Point decoding

6.11.4 Regenerating priority

6.18 Backbone Service Instance Multiplex Entity

6.18.1 Demultiplexing direction

6.18.2 Multiplexing direction

6.18.3 Priority Code Point encoding

6.18.4 Status parameters

7. Principles of network operation

7.4 Locating end stations

8. Principles of bridge operation

8.8 The Filtering Database

8.8.3 Dynamic Filtering Entries

8.8.8 Querying the Filtering Database

8.8.11 Connection_Identifier

9. Tagged frame format

9.5 Tag Protocol Identification

9.8 Backbone Service Instance Tag Control Information

12. Bridge management

12.2 Managed objectsVLAN-aware bridge objects

12.3 Data types

12.7 Filtering Database

12.7.7 General Filtering Database operations

12.8 Bridge Protocol Entity

12.14 CFM entities

12.15 Backbone Core Bridge management

12.16 Backbone Edge Bridge management

12.16.1 BEB configuration managed object

12.16.2 BEB/PB/VLAN Bridge Port configuration managed object

12.16.3 VIP configuration managed object

12.16.4 PIP configuration managed object

12.16.5 CBP Configuration managed object

13. The Multiple Spanning Tree Protocol (MSTP)

13.12 Port Role assignments

13.19 Multiple Spanning Tree state machines

13.21 State machine timers

13.21.1 pseudoInfoHelloWhen

13.25 State machine conditions and parameters

13.25.18 enableBPDUrx

13.25.19 enableBPDUtx

13.25.20 pseudoRootId

13.25.21 isL2gp

13.26 State machine procedures

13.26.6 checkBPDUConsistency()

13.26.7 preparePseudoInfo()

13.27 The Port Timers state machine

13.28 Port Receive state machine

13.31 Port Transmit state machine

13.32 Port Information state machine

13.37 Port Receive Pseudo Information state machine

13.40 Virtual Instance Port Spanning Tree operation

18. Principles of Connectivity Fault Management operation

19. CFM Entity operation

19.4 Maintenance Point addressing

20. Connectivity Fault Management protocols

20.26.1 ProcessLBM()

20.42.1 ProcessLTM()

25. Support of the MAC Service by Provider Backbone Bridged Networks

25.1 Service transparency

25.2 Customer service interface

25.3 Port-based service interface

25.4 S-tagged service interface

25.5 I-tagged service interface

25.6 Service instance segregation

25.7 Service instance selection and identification

25.8 Service priority and drop eligibility selection

25.9 Service access protection

25.9.1 Class II redundant LANs access protection

25.9.2 Class III simple redundant LANs and nodes access protection

26. Principles of Provider Backbone Bridged Network operation

26.1 Provider Backbone Bridged Network overview

26.2 Provider Backbone Bridged Network example

26.3 Backbone VLAN connectivity

26.4 Backbone addressing

26.4.1 Learning individual backbone addresses at a PIP

26.4.2 Translating backbone destination addresses at a CBP

26.4.3 Backbone addressing considerations for CFM Maintenance Points

26.5 Detection of connectivity loops through attached networks

26.6 Scaling of Provider Backbone Bridges

26.6.1 Hierarchal PBBNs

26.6.2 Peer PBBNs

26.7 Network Management

26.8 Connectivity Fault Management in Provider Backbone Bridges

26.8.1 CFM over Port-based and S-tagged Service Interfaces

26.8.2 Connectivity Fault Management over I-tagged Service Interfaces

26.8.3 Connectivity Fault Management over hierarchal E-NNI

26.8.4 Connectivity Fault Management over peer E-NNI

Annex A (normative) PICS proforma

Annex B (informative) Shared and independent VLAN learning

IEEE Standard for Local and metropolitan area networks— Virtual Bridged Local Area Networks Amendment 7: Provider Backbone Bridges IEEE Computer Society Sponsored by the LAN/MAN Standards Committee M T h a 1 2 0 8 . IEEE 3 Park Avenue New York, NY 10016-5997, USA 14 August 2008 IEEE Std 802.1ah™-2008 (Amendment to IEEE Std 802.1Q™-2005)

IEEE Std 802.1ah™-2008 (Amendment to IEEE Std 802.1Q™-2005) IEEE Standard for Local and metropolitan area networks— Virtual Bridged Local Area Networks Amendment 7: Provider Backbone Bridges Sponsor LAN/MAN Standards Committee of the IEEE Computer Society Approved 12 June 2008 IEEE-SA Standards Board

Abstract: This amendment defines an architecture and bridge protocols for interconnection of multiple Provider Bridged Networks, allowing a Provider to support up to 224 service instances. Keywords: Bridged Local Area Networks, LANs, local area networks, MAC Bridges, MANs, metropolitan area networks, MRP, MSTP, Multiple Registration Protocol, Multiple Spanning Tree Protocol, Multiple VLAN Registration Protocol, MVRP, Provider Bridged Local Area Networks, 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 © 2008 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 14 August 2008. 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. PDF: Print: ISBN 973-07381-5762-7 STD95803 ISBN 973-07381-5763-4 STDPD95803 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.

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 or the soundness of any judgments 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. 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. Every IEEE Standard is subjected to review at least every five years for revision or reaffirmation. When a document is more than five years old and has not been reaffirmed, 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 publishing and making this document available, the IEEE is not suggesting or rendering professional or other services for, or on behalf of, any person or entity. Nor is the IEEE undertaking to perform any duty owed by any other person or entity to another. Any person utilizing this, and any other IEEE Standards document, should rely upon his or her independent judgement 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. Interpretations: Occasionally questions may arise regarding the meaning of portions of standards as they relate to specific applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiate action to prepare appropriate responses. Since IEEE Standards represent a consensus of concerned interests, it is important to ensure that any interpretation has also received 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 interpretation requests except in those cases where the matter has previously received formal consideration. A statement, written or oral, that is not processed in accordance with the IEEE-SA Standards Board Operations Manual shall not be considered the official position of IEEE or any of its committees and shall not be considered to be, nor be relied upon as, a formal interpretation of the 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, explanation, or interpretation of the IEEE. Comments for revision of IEEE Standards are welcome from any interested party, regardless of membership affiliation with IEEE. 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Introduction This introduction is not part of IEEE Std 802.1ah-2008, IEEE Standards for Local and Metropolitan Area Net- works—Virtual Bridged Local Area Networks—Amendment 7: Provider Backbone Bridges. 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. Errata Errata, 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 are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at the following URL: http://standards.ieee.org/reading/ieee/interp/ index.html. iv Copyright © 2008 IEEE. All rights reserved.

Patents Attention is called to the possibility that implementation of this amendment may require use of subject matter covered by patent rights. By publication of this amendment, no position is taken with respect to the existence or validity of any patent rights in connection therewith. 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 amendment 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. Participants At the time this amendment was submitted, the IEEE 802.1 Working Group had the following membership: Tony Jeffree, Chair Paul Congdon, Vice Chair Stephen Haddock, Chair, Interworking Task Group Paul Bottorff, Stephen Haddock, and Muneyoshi Suzuki, Editors Osama Aboul-Magd Zehavit Alon Caitlin Bestler Jan Bialkowski Rob Boatright Jean-Michel Bonnamy Rudolf Brandner Craig W. Carlson Frank Chao Rao Cherukuri Taesik Cheung Alex Conta Diego Crupnicoff Claudio Desanti Linda Dunbar Hesham Elbakoury David Elie-Dit-Cosaque Janos Farkas Don Fedyk Felix Feifei Feng Norm Finn Bob Frazier John Fuller Geoffrey Garner Anoop Ghanwani Franz Goetz Eric Gray Ken Grewal Craig Gunther Mitch Gusat Brian Hassink Brian Hausauer Asif Hazarika Romain Insler Paul Hongkyu Jeong Michael Johas Teener Prakash Kashyap Hal Keen Keti Kilcrease Yongbum Kim Philippe Klein Mike Ko Raghu Kondapalli Bruce Kwan Kari Laihonen Yannick Le Goff Gael Mace Ben Mack-Crane David Martin Riccardo Martinotti Marco Mascitto Alan McGuire Menucher Menuchery John Messenger Dinesh Mohan Kevin Nolish Hiroshi Ohta David Olsen Shlomo Ovadia Don Pannell Glenn Parsons Ken Patton Joe Pelissier Hayim Porat Max Pritikin Ananda Rajagopal Karen Randall Robert Roden Guenter Roeck Josef Roese Dan Romascanu Moran Roth Jessy V. Rouyer Ali Sajassi Joseph Salowey Panagiotis Saltsidis Satish Sathe John Sauer Mick Seaman Koichiro Seto Himanshu Shah Ravi Shenoy Nurit Sprecher Kevin B. Stanton Bob Sultan George Swallow Attila Takacs Francois Tallet John Terry Pat Thaler Oliver Thorp Fred Tuck Maarten Vissers Manoj Wadekar Yan Wang Brian Weis Bert Wijnen Ludwig Winkel Michael D. Wright Chien-Hsien Wu Ken Young Copyright © 2008 IEEE. All rights reserved. v

The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. Osama Aboul-Magd Toru Aihara Butch Anton Danilo Antonelli Hugh Barrass Parag Bhatt Tomo Bogataj Paul Bottorff Michael Bouchet James Carlo Juan Carreon Keith Chow Charles Cook Arjan De Heer Russell Dietz Sourav Dutta Don Fedyk Prince Francis Yukihiro Fujimoto Devon Gayle Sergiu Goma C. Guy Stephen Haddock John Hawkins Atsushi Ito Raj Jain Tony Jeffree Piotr Karocki Stuart J. Kerry Yongbum Kim Thomas Kurihara John Lemon William Lumpkins Thomas Mack-Crane David Martin Jonathon Mclendon John Messenger Gary Michel Dinesh Mohan Jose Morales Michael S. Newman Nick S. A. Nikjoo Glenn Parsons Haim Porat Venkatesha Prasad Maximilian Riegel Jessy V. Rouyer Randall Safier John Sargent John Sauer Veselin Skendzic Kapil Sood Amjad Soomro Nurit Sprecher Manikantan Srinivasan Thomas Starai Marian Stasney Alourdes Sully Bob Sultan Michael Johas Teener Pat Thaler Oliver Thorp Thomas Tullia Mark-Rene Uchida Ludwig Winkel Derek Woo Ken Young Oren Yuen When the IEEE-SA Standards Board approved this standard on 12 June 2008, it had the following membership: Robert M. Grow, Chair Thomas Prevost, Vice Chair Steve M. Mills, Past Chair Judith Gorman, Secretary Jim Hughes Richard H. Hulett Young Kyun Kim Joseph L. Koepfinger* John Kulick David J. Law Glenn Parsons Ronald C. Petersen Chuck Powers Narayanan Ramachandran Jon Walter Rosdahl Robby Robson Anne-Marie Sahazizia Malcolm V. Thaden Howard L. Wolfman Don Wright Victor Berman Richard DeBlasio Andy Drozd Mark Epstein Alexander Gelman William R. Goldbach Arnold M. Greenspan Kenneth S. Hanus *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Michael H. Kelly, NIST Representative IEEE Standards Program Manager, Document Development Don Messina IEEE Standards Program Manager, Technical Program Development Michael D. Kipness vi Copyright © 2008 IEEE. All rights reserved.

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