1、ANSI INCITS 259-1997 (R2002)(formerly ANSI X3.259-1997)for Information Technology Fibre Distributed Data Interface (FDDI) Station Management -2 Packet Services (SMT-2-PS)American National Standardfor Information TechnologyFibre Distributed Data Interface (FDDI) Station Management-2 Packet Services (
2、SMT-2-PS)ANSIX3.259-1997SecretariatInformation Technology Industry CouncilApproved September 30, 1997American National Standards Institute, Inc.AbstractThe described Station Management-2 Packet Services (SMT-2-PS) protocol is intended for use in a high-performance multi-station network. This protoco
3、l is designed to be effective at 100 megabits per secondusing a Token ring architecture and optical fibre or copper twisted pair as the transmission medium overdistances of several kilometers in extent.Approval of an American National Standard requires review by ANSI that therequirements for due pro
4、cess, consensus, and other criteria for approvalhave been met by the standards developer.Consensus is established when, in the judgement of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Substantial agreement means much more th
5、ana simple majority, but not necessarily unanimity. Consensus requires that allviews and objections be considered, and that a concerted effort be madetowards their resolution.The use of American National Standards is completely voluntary; theirexistence does not in any respect preclude anyone, wheth
6、er he has approvedthe standards or not, from manufacturing, marketing, purchasing, or usingproducts, processes, or procedures not conforming to the standards.The American National Standards Institute does not develop standards andwill in no circumstances give interpretation on any American NationalS
7、tandard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Standard in the name of the AmericanNational Standards Institute. Requests for interpretations should beaddressed to the secretariat or sponsor whose name appears on the titlepage of this
8、 standard.CAUTION NOTICE:This American National Standard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require that action be taken periodically to reaffirm, revise, orwithdraw this standard. Purchasers of American National Standards mayreceive cu
9、rrent information on all standards by calling or writing the AmericanNational Standards Institute.American National StandardPublished byAmerican National Standards Institute, Inc.11 West 42nd Street, New York, NY 10036Copyright 1997 by Information Technology Industry Council (ITI)All rights reserved
10、.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without prior written permission of the publisher.Printed in the United States of AmericaCAUTION:The developers of this standard have requested that holders of patents that may be re-quired for
11、the implementation of the standard disclose such patents to the publisher. However, nei-ther the developers nor the publisher have undertaken a patent search in order to identify which, ifany, patents may apply to this standard.As of the date of publication of this standard and following calls for t
12、he identification of patents thatmay be required for the implementation of the standard, no such claims have been made. No fur-ther patent search is conducted by the developer or publisher in respect to any standard it process-es. No representation is made or implied that licenses are not required t
13、o avoid infringement in theuse of this standard. iContentsPageForewordv1Scope . 12Normative references. 33Definitions 44Conventions and abbreviations 54.1 Conventions . 54.1.1 State machines 64.1.2 Addressing . 74.1.3 Default and initial values 94.2 Abbreviations . 105General description 115.1 Overv
14、iew of SMT functions 116Services . 116.1 SMT-2-PS to MAC services . 126.1.1 SM_MA_INITIALIZE_PROTOCOL.request . 126.1.2 SM_MA_CONTROL.request 136.1.3 SM_MA_STATUS.indication 156.1.4 SM_MA_UNITDATA.request . 166.1.5 SM_MA_UNITDATA.indication 186.1.6 SM_MA_UNITDATA_STATUS.indication 196.1.7 SM_MA_TOKE
15、N.request . 206.2 SMT-2-PS to SMT-2-IS services 206.2.1 IS_PS_UNITDATA.request 206.2.2 IS_PS_UNITDATA.indication. 216.3 SMT-2-PS to SMT-2-CS services 226.3.1 PS_CS_CONTROL.request. 236.3.2 PS_CS_STATUS.indication . 236.4 SMT-to-Systems Management services 247Management Information Base (MIB) 267.1 M
16、anagement Information Base (MIB) structure . 267.2 Integrity of MIB state 267.3 Management information definitions 267.3.1 MIB summary . 267.3.2 Managed object class templates 287.3.3 Attribute group templates . 357.3.4 Attribute templates . 367.3.5 Action templates. 457.3.6 Notification templates.
17、457.3.7 ASN.1 definitions 467.3.8 Name binding . 508Facilities . 508.1 Variables 508.2 Flags 528.3 Timers 53iiPage8.3.1 Timer functions. 538.3.2 Timer expiration . 578.4 Signals . 608.5 SMT frame format 618.5.1 SMT frame contents. 618.5.2 SMT header . 638.5.3 SMT InfoField. 638.5.4 SMT Encoding Rule
18、s . 658.5.5 Byte ordering in multibyte fields. 668.5.6 Addressing . 668.5.7 Frame validity. 668.6 SMT frames 668.6.1 Neighbor Information Frames (NIF) . 668.6.2 Status Information Frames (SIF) 688.6.3 ECHO Frames (ECF). 708.6.4 Resource Allocation Frames (RAF) OPTIONAL 708.6.5 Request Denied Frame (
19、RDF) . 728.6.6 Extended Service Frame (ESF) OPTIONAL 738.6.7 Status Report Frame (SRF) . 738.6.8 Parameter Management Frames (PMF) 748.6.9 Monitor Rank Frame (MRF) . 768.7 SMT frame parameters 768.7.1 Upstream Neighbor Address (UNA). 768.7.2 Station descriptor . 768.7.3 Station state . 778.7.4 Messa
20、ge time stamp 778.7.5 Station policies. 788.7.6 Path latency contribution/per ring OPTIONAL . 788.7.7 MAC neighbors 788.7.8 Path descriptor. 798.7.9 MAC status. 818.7.10 PORT Link Error Rate monitoring (LER) status . 818.7.11 MAC frame counters 828.7.12 MAC frame not copied count OPTIONAL 828.7.13 M
21、AC priority values OPTIONAL. 828.7.14 PORT EB (Elasticity Buffer) status OPTIONAL . 828.7.15 Manufacturer field OPTIONAL . 838.7.16 User field 838.7.17 ECHO data. 838.7.18 Reason code 838.7.19 Rejected frame beginning 848.7.20 SMT supported versions 848.7.21 Resource type OPTIONAL. 848.7.22 SBA comm
22、and OPTIONAL 848.7.23 SBA payload request OPTIONAL 858.7.24 SBA overhead request OPTIONAL 858.7.25 SBA allocation address OPTIONAL. 858.7.26 SBA category OPTIONAL 858.7.27 Maximum T_Neg OPTIONAL. 858.7.28 Minimum SBA segment size OPTIONAL. 868.7.29 SBA allocatable OPTIONAL. 868.7.30 Authorization OP
23、TIONAL. 86iiiPage8.7.31 Rank information OPTIONAL. 868.7.32 ESF ID 869Operations 879.1 Overview 879.2 Ring Management 879.2.1 Concepts 879.2.2 Operation . 879.3 Frame processing 939.3.1 Request Response protocols 939.3.2 Announcement protocols . 939.3.3 SMT header processing . 939.4 Neighbor Notific
24、ation 949.4.1 Neighbor Information polling 959.4.2 Neighbor Notification transmitter operation 959.4.3 Neighbor Notification receiver operation 979.5 Status report protocol. 989.5.1 Overview 989.5.2 Status Report transmitter operation . 1009.6 Parameter management protocol. 1049.6.1 Overview 1049.6.
25、2 Operation . 1049.7 Station Status polling . 1079.7.1 Overview 1079.7.2 Operation . 1079.8 Echo protocol . 1079.8.1 Overview 1079.8.2 Operation . 1089.9 Synchronous bandwidth allocation. 1089.9.1 Overview 1089.9.2 Operation . 1089.9.3 Synchronous bandwidth management process . 1119.10 Extended Serv
26、ice Protocol OPTIONAL 1129.11 Monitor Ranking Protocol OPTIONAL 1129.11.1 Overview 1129.11.2 Detailed MRP description. 113Tables1Summary of SMT Frames 622Station Topology Matrix . 80Figures1SMT-2 Document Structure . 22SMT Management Model. 253Ring Management (RMT) state diagram 914Neighbor Notifica
27、tion Transmitter state diagram 955Status Report Transmitter state diagram . 1026Monitor Ranking Protocol (MRP) state diagram. 115ivPageAnnex ASynchronous bandwidth management. 118A.1 Allocation and deallocation 118A.2 Synchronous service database 119A.2.1 Station records. 119A.2.2 Station activity 1
28、19A.3 Monitoring 120A.3.1 NIF monitoring 120A.3.2 Polling 120A.3.3 Ring monitoring 121A.4 Recommended allocator conventions 121vForeword(This foreword is not part of American National Standard X3.259-1997.)The Fibre Distributed Data Interface (FDDI) is intended for use in a high-performance,general-
29、purpose, multi-node network and is designed for efficient operation with apeak data rate of 100 Mbit/s. It uses a Token Ring architecture with optical fibre as thetransmission medium. FDDI provides for hundreds of nodes operating over an extentof tens of kilometers.Station Management (SMT) specifies
30、 the local portion of the system managementapplication process for FDDI, including the control required for proper operation of astation in an FDDI ring. SMT provides services such as connection management,station insertion and removal, station initialization, configuration management, faultisolatio
31、n and recovery, communications protocol for external authority, schedulingpolicies, and collection of statistics.The set of basic FDDI standards also includes the following standards:a) A Media Access Control (MAC), which specifies the lower sublayer of the DataLink Layer for FDDI, including the acc
32、ess to the medium, addressing, datachecking, and data framing;b) A Physical Layer Media Dependent (PMD), which specifies the lower sublayerof the Physical Layer for FDDI, including the power levels and characteristics of theoptical transmitter and receiver, interface optical signal requirements incl
33、udingjitter, the connector receptacle footprint, the requirements of conforming FDDIoptical fibre cable plants, and the permissible bit error rates;c) A Physical Layer Protocol (PHY), which specifies the upper sublayer of thePhysical Layer for the FDDI. PHY presents the specifications and services p
34、rovidedfor conforming FDDI attachment devices and specifies the data encode/decode,framing, and clocking requirements. PHY also specifies the elasticity buffer,smoothing, and repeat filter functions. American National Standards for PHY (ANSI X3.148-1988), MAC (ANSI X3.139-1987), and PMD (ANSI X3.166
35、-1990) have been approved and published. In addition,FDDI standards are being processed as International Standards by standardscommittee ISO/IEC JTC1/SC 25. International Standards for PHY, MAC, and PMD(ISO 9314-1: 1989, 9314-2: 1989, and ISO/IEC 9314-3: 1990, respectively) have alsobeen published.S
36、MT is a sophisticated document specifying many critical aspects of interoperabilityin a multi-vendor FDDI network. It has proved to be by far the most difficult of the setof basic FDDI standards to complete with the work on SMT requiring a high degree ofcooperation between competing manufacturers of
37、 FDDI equipment.An American National Standard for SMT (ANSI X3.229-1994), representing the finalstandard in the set of basic FDDI standards was approved by X3T9 technical letterballot and forwarded to X3 for approval as an American National Standard by the June1992 X3T9 meeting. The standard propose
38、d herein is part of an effort to enhance thisbasic SMT standard.Two extensions to the basic FDDI have been approved as American NationalStandards and are in print. The first (ANSI X3.186-1992), for Hybrid Ring Control(HRC), commonly known as FDDI-II, extends the capability of FDDI to handleisochrono
39、us data streams at a multiplicity of data rates. The second (ANSI X3.184-1993), for a single mode optical fibre version of PMD (SMF-PMD), permits optical linksof up to 60 km. HRC has been published as an International Standard and isdesignated as ISO 9314-5: 1995. SMF-PMD is being processed as an In
40、ternationalStandard by ISO/IEC JTC1/SC25 under the designation of ISO 9314-4.viThe FDDI-II enhancement (HRC, ANSI X3.186-1992) referred to above, requiresenhancements to the basic PHY, MAC and SMT standards for FDDI. Theseenhancement standards are known as PHY-2, MAC-2 and SMT-2, respectively The en
41、hanced standards, PHY-2, MAC-2, and SMT-2 are each required to beinteroperable with the corresponding basic FDDI standard when the FDDI network isoperating in the basic mode, and furthermore, it is intended that PHY, MAC, and SMTshall remain supported standards.Standards for PHY-2 (ANSI X3.231-1994)
42、 and MAC-2 (ANSI X3.239-1994), arecomplete. Each document has been approved by X3 and forwarded to theInternational Standards Organisation (ISO) for approval as a Draft InternationalStandard.Work on SMT-2, the enhanced version of SMT necessary for FDDI-II, has beendivided into three separate project
43、s as follows:a) SMT-2 Common Services (SMT-2-CS) is based on the common servicesportion of the basic SMT (ANSI X3.257-1997).b) SMT-2 Isochronous Services (SMT-2-IS) is new work required to support theisochronous data streams offered by FDDI-II (ANSI X3.258-1997).c) SMT-2 Packet Services (SMT-2-PS) i
44、s based on the packet services portion ofthe basic SMT (ANSI X3.259-1997).This standard has one annex, which is informative and is not part of the standard.Requests for interpretation, suggestions for improvement, or addenda, or defectreports are welcome. They should be sent to the National Committe
45、e for InformationTechnology Standards (NCITS), ITI, 1250 Eye Street, NW, Suite 200, Washington,DC 20005.This standard was processed and approved for submittal to ANSI by NCITS.Committee approval of this standard does not necessarily imply that all committeemembers voted for its approval. At the time
46、 it approved this standard, NCITS had thefollowing members.James D. Converse, ChairKaren Higginbottom, Vice-ChairMonica Vago, SecretaryOrganization Represented Name of RepresentativeAMP, Inc. John HillCharles Brill (Alt.)Apple Computer, Inc. David K. MichaelJerry Kellenbenz (Alt.)AT management servi
47、ces are provided to a management entity in the same or another layer.3.19 single attachment concentrator: Concentrator that offers a single attachment to the FDDInetwork.3.20 single attachment station: Station that offers a single attachment to the FDDI network.ANSI X3.259-199763.21 station: Address
48、able node on an FDDI network capable of transmitting, repeating and receivinginformation. A station has exactly one SMT, at least one MAC, at least one PHY, and at least one PMD.3.22 trunk: Physical loop topology, either open or closed, employing two optical fibre signal paths, onein each direction
49、(i.e., counter-rotating), forming a sequence of peer connections between FDDI nodes.When the trunk forms a closed loop it is sometimes called a trunk ring.3.23 tree: Physical topology consisting of a hierarchy of master-slave connections between aconcentrator and other FDDI nodes (including subordinate concentrators).4 Conventions and abbreviations4.1 ConventionsThe terms “SMT”, “MAC”, “LLC”, “H-MUX”, “I-MAC”, “PHY”, and “PMD” when used without modifiers,refer specifically to the local entities.For the purposes of this standard (SMT-2-PS), the term “MAC” is used to denote the packet
