1、ANSI INCITS 257-1997 (R2002)(formerly ANSI X3.257-1997)for Information Technology Fibre Distributed Data Interface (FDDI) Station Management-2Common Services (SMT-2-CS)American National Standardfor Information TechnologyFibre Distributed Data Interface (FDDI) Station Management-2Common Services (SMT
2、-2-CS)ANSIX3.257-1997SecretariatInformation Industry Technology CouncilApproved September 30, 1997American National Standards Institute, Inc.AbstractThe described Station Management-2 Common Services (SMT-2-CS) protocol is intended for use in ahigh-performance multi-station network. This protocol is
3、 designed to be effective at 100 megabits per sec-ond using a token ring architecture and fibre optics 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 proces
4、s, 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 thana
5、 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, whether
6、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 NationalStan
7、dard. 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 st
8、andard.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 curre
9、nt 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 1998 by Information Technology Industry Council (ITI)All rights reserved.No
10、 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 required for the
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13、id infringement in the use of this standard. iContentsPageForeword.iv1Scope. 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 104.2 Abbreviations . 105General description 115.1 Definitio
14、n of an FDDI node. 125.2 Definition of an FDDI network 155.2.1 Physical topology. 165.2.2 Logical topology. 165.2.3 Physical media topology 175.2.4 FDDI connection rules . 175.3 Overview of SMT functions 196Services . 196.1 SMT to PHY services. 196.1.1 SM_PH_LINE_STATE.request 206.1.2 SM_PH_STATUS.i
15、ndication 206.1.3 SM_PH_CONTROL.request 216.2 SMT to PMD services 226.2.1 SM_PM_CONTROL.request 236.2.2 SM_PM_BYPASS.request. 236.2.3 SM_PM_SIGNAL.indication. 236.3 SMT to H-MUX services 246.3.1 SM_HM_INITIALIZE_PROTOCOL.request. 246.3.2 SM_HM_CONTROL.request . 256.3.3 SM_HM_STATUS.indication 266.3.
16、4 SM_HM_SAP.request 276.3.5 SM_HM_WBC.request. 276.3.6 SM_HM_WBC.confirm. 286.3.7 SM_HM_CYCLE_SYNC.request. 286.4 SMT-2-PS to SMT-2-CS services 296.4.1 PS_CS_CONTROL.request. 296.4.2 PS_CS_STATUS.indication. 306.5 SMT-2-IS to SMT-2-CS services . 316.5.1 IS_CS_CONTROL.request 316.5.2 IS_CS_STATUS.ind
17、ication 316.6 SMT to systems management services. 327Management information base (CS-MIB) 347.1 Management information base (MIB) structure 347.2 Integrity of MIB state 35iiPage7.3 Management information definitions 367.3.1 MIB summary. 367.3.2 Managed object class templates . 407.3.3 Attribute grou
18、p templates. 537.3.4 Attribute templates. 567.3.5 Action templates 777.3.6 Notification templates 797.3.7 ASN.1 definitions . 827.3.8 Name binding. 958Facilities. 988.1 Variables 988.2 Signals . 1008.3 Flags 1018.3.1 Operational flags 1018.3.2 Capability flags 1038.3.3 Error indicator flags 1038.4 T
19、imers 1048.4.1 Timer functions 1048.4.2 Timer expiration values 1048.5 Line states . 1109Operation . 1119.1 Overview 1119.2 Structure 1119.3 Link confidence test . 1139.3.1 Link confidence test policies 1139.3.2 Link confidence test actions. 1139.4 Link error monitor. 1149.4.1 Link error monitor obj
20、ectives 1149.4.2 Link error event detector 1149.4.3 Link error event accumulation 1149.4.4 Link error rate threshold test 1149.4.5 Link error monitor estimator. 1159.5 Entity Coordination Management (ECM) . 1159.5.1 ECM functional description 1159.5.2 Detailed ECM description 1159.6 Physical Connect
21、ion Management (PCM). 1209.6.1 PCM functional description 1209.6.2 Detailed PCM description 1259.6.3 PCM signaling 1289.7 Path test. 1319.8 Trace function 1329.8.1 Trace initiation . 1329.8.2 Trace propagation 1329.8.3 Trace termination. 1329.8.4 Trace acknowledgement 1339.9 Configuration Management
22、 (CFM) 1339.9.1 CFM functional description 1339.9.2 Paths 1339.9.3 Configuration control element (CCE). 1479.9.4 Station and concentrator structure. 147iiiPage9.9.5 Configuration element considerations 1499.9.6 Detailed configuration management (CFM) description for ports 1529.9.7 Detailed configura
23、tion management (CFM) description for MACs. 1609.9.8 Detailed configuration management (CFM) description for I-MACs 1639.9.9 Detailed configuration management (CFM) description for H-MUXs. 1669.10 H-MUX Management (HMT) 1689.10.1 General H-MUX management . 1699.10.2 H-MUX monitor management (HMM) 17
24、0Figures1SMT-2 document structure 22Example single attachment basic mode station. 133Example single attachment hybrid station . 144Example dual attachment hybrid station 145Example dual attachment hybrid concentrator. 156Ring of trees topology 177SMT management model. 338FDDI naming tree. 979Common
25、services structure . 11210Entity Coordination Management (ECM) state diagram 11711Physical Connection Management (PCM) state diagram 12212Configuration control element (CCE) interfaces 14813DAS configuration examples 15014Port configuration management (CFM) 15515MAC configuration management (CFM) 16
26、116I-MAC configuration management (CFM) 16417H-MUX configuration management (CFM) 16718H-MUX monitor management (HMM) state diagram . 171ivForeword(This foreword is not part of American National Standard X3.257-1997.)The Fibre Distributed Data Interface (FDDI) is intended for use in a high-performan
27、cegeneral 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 asthe transmission medium. FDDI provides for hundreds of nodes operating over anextent of tens of kilometers.Station Management (SMT)
28、specifies 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, faul
29、tisolation 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 theData Link Layer for FDDI, includi
30、ng the access 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 ofthe optical transmitter and receiver, interface optical signal requir
31、ements includingjitter, the connector receptacle footprint, the requirements of conforming FDDI op-tical 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
32、and services provid-ed for conforming FDDI attachment devices and specifies the data encode/de-code, 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
33、 PMD (ANSI X3.166-1990) have been approved and published. In addi-tion, 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 al
34、sobeen published.SMT 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 competin
35、g manufacturers of 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 ANS by the June 1992 X3T9 meeting.The standard proposed her
36、ein is part of an effort to enhance this basic SMT standard.Two extensions to the basic FDDI have been approved as American National Stan-dards 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 handle isochronou
37、sdata streams at a multiplicity of data rates. The second (ANSI X3.184-1993), for asingle mode optical fibre version of PMD (SMF-PMD), permits optical links of up to 60km. HRC has been published as an International Standards by ISO/IEC JTC1/SC25,under the designation of ISO 9314-4.vThe FDDI-II enhan
38、cement (HRC, ANSI X3.186-1992) referred to above, requires en-hancements to the basic PHY, MAC and SMT standards for FDDI. These enhance-ment standards are known as PHY-2, MAC-2 and SMT-2, respectively.The enhanced standards, PHY-2, MAC-2, and SMT-2 are each required to be in-teroperable with the co
39、rresponding 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 and MAC-2, are in process. PHY-2 (ANSI X3.231-1994) wasapproved by X3T9 technical letter ballot and forwarde
40、d to X3 for approval as an ANSby the June 1992 X3T9 meeting. The MAC-2 document was forwarded to technicalletter ballot by the October 1992 X3T9 meeting.Work on SMT-2, the enhanced version of SMT necessary for FDDI-II, has been divid-ed into three separate projects as follows:(a) SMT-2 Common Servic
41、es (SMT-2-CS) is based on the common services por-tion 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) is based on the packet services
42、portionof the basic SMT. (ANSI X3.259-1997)Requests for interpretation, suggestions for improvement or addenda, or defect re-ports are welcome. They should be sent to the National Committee for InformationTechnology Standards (NCITS), ITI, 1250 Eye Street, NW, Suite 200, Washington,DC 20005.This sta
43、ndard was processed and approved for submittal to ANSI by NCITS. Com-mittee approval of this standard does not necessarily imply that all committee mem-bers voted for its approval. At the time it approved this standard, NCITS had thefollowing members: James D. Converse, ChairKaren Higginbottom, Vice
44、-ChairKate McMillan, SecretaryOrganization Represented Name of RepresentativeAMP, Inc. John HillCharles Brill (Alt.)Apple Computer, Inc. David K. MichaelJerry Kellenbenz (Alt.)AT a MIC plug and a MIC receptacle.3.13 MIC plug: Male part of the MIC, which terminates a fibre optical cable.3.14 MIC rece
45、ptacle: Female part of the MIC, which is contained in an FDDI node.3.15 network (FDDI network): Collection of FDDI nodes interconnected to form a trunk, or a tree, or atrunk with multiple trees. This topology is sometimes called a dual ring of trees.3.16 node: Generic term applying to an active elem
46、ent in an FDDI network (station or concentrator).3.17 null attachment concentrator: Concentrator that does not contain an A, B, or S port.3.18 path: Path represents the segment(s) of a logical ring that pass through a station.3.19 physical connection: Full-duplex physical layer association between a
47、djacent PHY entities (inconcentrators or stations) in an FDDI network, i.e., a pair of physical links.3.20 physical Link: Simplex path (via PMD and attached medium) from the transmit function of onePHY entity to the receive function of an adjacent PHY entity (in concentrators or stations) in an FDDI
48、network.3.21 port: PHY entity and a PMD entity in a node, together creating a PHY/PMD pair, that may connectto the fibre media and provide one end of a physical connection with another node.ANSI X3.257-199753.22 primary path: A primary path represents, to the best of a stations knowledge, the segmen
49、t(s) ofthe primary ring that pass through the station. Conditions may exist in parts of the network which maycause the path to be in a different ring (e.g., secondary instead of primary).3.23 primitive: Element of the services provided by one entity to another.3.24 receiver (optical): Opto-electronic circuit that converts an optical signal to an electrical logicsignal.3.25 repeater: Physical-layer relay in an FDDI network. A repeater is not further defined in thisstandard.3.26 ring: Set of stations wherein information is passed sequentially between stations, each station inturn examinin
