1、ANSI INCITS 229-1994 (R1999)(formerly ANSI X3.229-1994 (R1999)for Information Systems Fibre Distributed Data Interface(FDDI) Station Management (SMT)ANSI x3.229-1 994 American National Standard for Information Systems - Fibre Distributed Data Interface (FDDI) - Station Management (SMT) Secretariat C
2、omputer and Business Equipment Manufacturers Association Approved May 12, 1994 American National Standards Institute, Inc. AmericanNationalStandardApproval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for approval havebe
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10、ducted by the developer or publisher inrespect to any standard it processes. No representation is made or implied that licenses are not required to avoidinfringement in the use of this standard.Published byAmerican National Standards Institute11 West 42nd Street, New York, New York 10036Copyright 19
11、94 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without prior written permission of ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaCont
12、ents Page 1 Scope . .1 2 Normative references 2 3 Definitions .2 4 Conventions and abbreviations .4 4.1 Conventions .4 4.1.1 State machines 5 4.1.2 Addressing . .5 4.1.3 Default and initial values .8 4.2 Abbreviations . 8 5 General description . 10 5.1 Definition of an FDDI node .10 5.2 Definition o
13、f an FDDI network 12 5.2.1 Physical topology . .13 5.2.2 Logical topology . .13 5.2.3 Physical media topology . .14 5.2.4 FDDI connection rules .14 5.3 Overview of SMT functions . .16 6 Services . .16 6.1 SMT-to-MAC services . .16 6.1 .l SMMAINITIALIZEPROTOCOL.request .17 6.1.2 SMMAINITIALIZEPROTOCO
14、L.confirmation .17 6.1.3 SM-MA-CONTROL.request .18 6.1.4 SM-MA-STATUS.indication .19 6.1.5 SM-MA-UNITDATA.request .19 6.1.6 SM-MA-UNITDATA.indication .21 6.1.7 SM-MA-UNITDATA-STATUS.indication .21 6.1.8 SM-MA-TOKEN.request . .22 6.2 SMT-to-PHY services .23 6.2.1 SM-PH-LINE-STATE.request . .23 6.2.2
15、SM-PH-STATUSindication . .23 6.2.3 SM-PH-CONTROL.request .24 6.3 SMT-to-PMD services . .24 6.3.1 SM-PM-CONTROL.request .25 6.3.2 SM-PM-BYPASS.request . .25 6.3.3 SM-PM-SIGNAL.indication . .25 6.4 SMT services to systems management .26 6.4.1 Overview of SMT management services .26 6.4.2 SMT-Managemen
16、t agent process local service primitives 2 6 6.4.3 Management information base (MIB) structure .27 6.4.4 Integrity of MI6 state . . .28 6.4.5 Management information definitions .29 6.4.5.1 MIB summary .29 6.4.5.2 Managed object class templates . .32 6.4.5.3 Attribute group templates .44 6.4.5.4 Attr
17、ibute templates .47 6.4.5.5 Action templates .65 6.4.5.6 Notification templates .67 6.4.5.7 ASN.l definitions . .69 6.4.5.8 Name binding .81 i Page 7 Facilities . .82 7.1 SMT frame format 82 7.1 .l SMT frame contents . .83 7.1.2 SMT header . 83 7.1.3 SMT InfoField 85 7.1.4 SMT encoding rules . .85 7
18、.1.5 Byte ordering in multibyte fields . .87 7.1.6 Addressing . .87 7.1.7 Frame validity 88 7.2 SMT frames . .88 7.2.1 Neighbour Information Frame (NIF) . .88 7.2.2 Status Information Frames (SIF) . 89 7.2.3 ECHO Frame (ECF). .91 7.2.4 Resource Allocation Frame (RAF) OPTIONAL .92 7.2.5 Request Denie
19、d Frame (RDF) . .93 7.2.6 Extended Service Frame (ESF) OPTIONAL . .94 7.2.7 Status Report Frame (SRF) 94 7.2.8 Parameter Management Frames (PMF) .95 7.3 SMT-Parameters .96 7.3.1 General parameters . .97 8 Frame-based management protocols .105 8.1 Frame processing . 105 8.1 .l Request-response protoc
20、ols .105 8.1.2 Announcement protocols .106 8.1.3 SMT header processing 106 8.2 Neighbour Notification . .107 8.2.1 Neighbour information polling . .107 8.2.2 Facilities . .107 8.2.3 Neighbour Notification transmitter operation .109 8.2.4 Neighbour Notification receiver operation .112 8.3 Status Repo
21、rt protocol .113 8.3.1 Overview .113 8.3.2 Facilities . .114 8.3.3 Status Report transmitter operation . .117 8.4 Parameter Management protocol .120 8.4.1 Overview .120 8.4.2 Operation .121 8.5 Station Status polling .124 85.1 Overview .124 8.5.2 Operation .124 8.6 Echo protocol .124 8.6.1 Overview
22、.124 8.6.2 Operation .124 8.7 Synchronous Bandwidth Allocation . .124 8.7.1 Overview .124 8.7.2 Operation .125 8.7.3 Synchronous bandwidth management process 127 8.8 Extended Service protocol OPTIONAL . .128 9 Connection Management . .129 9.1 Overview . .129 9.2 Organization .129 9.3 Connection Mana
23、gement structure . .129 ii Page 9.4 Facilities . 131 9.4.1 Variables . 131 9.4.2 Signals . 133 9.4.3 Flags . .133 9.4.4 Timers . 136 9.4.5 Line states . 141 9.4.6 Link Confidence Test (LCT) . .141 9.4.7 Link Error Monitor (LEM). . .143 9.4.8 Path Test .144 9.4.9 Trace function . .145 9.5 Entity Coor
24、dination Management (ECM). .145 9.51 ECM functional description . .145 9.5.2 Detailed ECM description . .146 9.6 Physical Connection Management (PCM) .149 9.6.1 PCM functional description . .150 9.6.2 Detailed PCM description . .153 9.6.3 PCM signalling . .156 9.7 Configuration Management (CFM). . .
25、159 9.7.1 CFM functional description . .159 9.7.2 Paths .160 9.7.3 Configuration Control Element (CCE) .169 9.7.4 Station and concentrator structure . .169 9.7.5 Configuration element considerations .169 9.7.6 Detailed Configuration Management (CFM) description for Ports .173 9.7.7 Detailed Configur
26、ation Management (CFM) description for MACs .180 10 Ring Management . .182 10.1 Concepts . .182 10.2 Facilities .183 10.2.1 Flags . .183 10.2.2 Timer .183 10.3 Operation .186 10.3.1 Overview .186 10.3.2 Detailed description .188 Tables 1 Summary of SMT frames . .84 2 Station topology matrix .l 00 Fi
27、gures 1 Example Single Attachment Station (SAS). .l 1 2 Example Dual Attachment Station (DAS) .12 3 Example Dual Attachment Concentrator (DAC) . .13 4 Ring of trees topology . .14 5 SMT management model . .27 6 FDDI naming tree . .82 7 Neighbour Notification transmitter state diagram .l 10 8 Status
28、Report transmitter state diagram . .118 9 Connection Management structure . .130 10 Entity Coordination Management (ECM) state diagram . :. .147 11 Physical Connection Management (PCM) state diagram . .151 12 Configuration Control Element (CCE) interfaces .170 . . . III - -_- - -_ _-.-.:-.- =- .-*L_
29、r (b) A Physical Layer Media Dependent (PMD), which specifies the lower sublayer of the Physical Layer for FDDI, including the power lev- els and characteristics of the optical transmitter and receiver, interface optical signal requirements including jitter, the connector receptacle footprint, the r
30、equirements of conforming FDDI optical fibre cable plants, and the permissible bit error rates; (c) A Physical Layer protocol (PHY), which specifies the upper sublay- er of the Physical Layer for the FDDI. PHY presents the specifications and services provided for conforming FDDI attachment devices a
31、nd specifies the data encode/decode, framing, and clocking requirements. PHY also specifies the elasticity buffer, smoothing, and repeat filter functions. American National Standards for MAC (American National Standard for Information systems - Fiber Distributed Data Interface (FDDI) - Token ring me
32、dia access control (MAC), ANSI X3.139), PHY (American National Stangard for Information systems - Fiber Distributed Data Interface (FDDI) - Token ring physical layer protocol, ANSI X3.148), and PMD (American National Standard for Information systems - Fiber Distributed Data interface (FDDI) - Physic
33、al layer medium dependent, ANSI X3.166) have been approved and published. In addition, FDDI standards are being pro- cessed as International Standards by standards committee ISO/IEC JTCl/SC 25. International Standards for PHY, MAC, and PMD (IS0 9314- 1 :1989, 9314-2:1989 and ISO/IEC 9314-3:1990, res
34、pectively) have also been published. Standards for the enhancement of PHY and MAC, called PHY-2 and MAC- 2, are also in process. These include miscellaneous updates identified by X3T9.5, including the changes that were required in MAC and PHY for extensions to FDDI, such as FDDI-II and MAC bridging.
35、 Two extensions to the basic FDDI have been developed as American National Standards. The first (American National Standard for information systems - Fiber Distributed Data Interface (FDDI) - Sing/e-mode fiber physical layer medium dependent (SMF-PMD), ANSI X3.184), for a single V ,. _ _._. _ . _ -.
36、 _ in ._w .- _.hALL _:_;-r.-i .c.-I a MIC plug and a MIC receptacle. 3.13 MIC plug: The male part of the MIC which terminates a fibre optical cable. 3.14 MIC receptacle: The female part of the MIC which is contained in an FDDI node. 3.15 network (FDDI network): A collection of FDDI nodes interconnec
37、ted to form a trunk, or a tree, or a trunk with multiple trees. This topology is sometimes called a dual ring of trees. 3.16 node: A generic term applying to an active element in an FDDI network (station or concentrator). 3.17 Null Attachment Concentrator (NAC): A concentrator that does not contain
38、an A, B, or S Port. 3.18 Path: A Path represents the segment(s) of a logical ring that pass through a node. 3.19 Physical Connection: The full-duplex physical layer association between adjacent PHY entities (in adjacent nodes) in an FDDI network, i.e. a pair of Physical Links. 3.20 Physical Link: Th
39、e simplex path (via PMD and attached medium) from the transmit function of one PHY entity to the receive function of an adjacent PHY entity (in adjacent nodes) in an FDDI network. 3.21 Port: A PHY entity and a PMD entity in a node, together creating a PHY/PMD pair, that may connect to the fibre medi
40、a and provide one end of a physical connection with another node. 3.22 Primary Path: A Primary Path represents, to the best of a nodes knowledge, the segment(s) of the primary ring that pass through the node. Conditions may exist in parts of the network which may cause the Path to be in a different
41、ring (e.g. Secondary Path instead of Primary Path). 3.23 primitive: An element of the services provided by one entity to another. 3.24 receiver (optical): An opto-electronic circuit that converts an optical signal to an electrical logic signal. 3.25 repeater: A physical-layer relay in an FDDI networ
42、k. A repeater is not further defined in this International Standard. 3.26 ring: A set of nodes wherein information is passed sequentially between nodes, each node in turn examining or copying the information, finally returning it to the originating node. 3.27 rooted node: A node that does not have a
43、ny active A, B, or S Ports in tree mode. 3.28 Secondary Path: A Secondary Path represents, to the best of a nodes knowledge, the segment(s) of the secondary ring that pass through the node. Conditions may exist in parts of the network which may cause the Path to be in a different ring (e.g. Primary
44、Path instead of Secondary Path). 3.29 services: The services provided by one entity to another. Data services are provided to a higher layer entity; management services are provided to a management entity in the same or another layer. -.-.-.-_ .-_- _._- _.- _ _ - _Am -.,- 4Lr_i-r_r ,._ -l.,-,;-_-r.,
45、)i-i ANSI X3.229-l 994 3.30 Single Attachment Concentrator (SAC): A concentrator that offers a single attachment to the FDDI network. 3.31 Single Attachment Station (SAS): A station that offers a single attachment to the FDDI network. 3.32 station: An addressable node on an FDDI network capable of t
46、ransmitting, repeating and receiving information. A station has exactly one SMT, at least one MAC, at least one PHY, and at least one PMD. 3.33 symbol: The smallest signalling element used by the Data Link Layer (DLL). The symbol set consists of 16 data symbols and 8 control symbols. 3.34 transmitte
47、r (optical): An opto-electronic circuit that converts an electrical logic signal to an optical signal. 3.35 trunk: A physical loop topology, either open or closed, employing two optical fibre signal paths, one in each direction (i.e. counter-rotating), forming a sequence of peer connections between
48、FDDI nodes. When the trunk forms a closed loop it is sometimes called a trunk ring. 3.36 tree: A physical topology consisting of a hierarchy of master-slave connections between a concentrator and other FDDI nodes (including subordinate concentrators). 4 Conventions and abbreviations 4.1 Conventions
49、The terms SMT, MAC, LLC, PHY, and PMD when used without modifiers, refer specifically to the local entities. The terms node, station, concentrator and repeater are used as follows in this standard. The term node is used as a generic term to denote any active element in an FDDI network. Station is used to denote a node that has at least one MAC. Concentrator is used to denote any node that has concentrator capability. The terms station and concentrator thus overlap such that some nodes may be referred to by either term. In this case, the te
