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1、INTERNATIONAL STANDARDIZED PROFILE ISOJIEC ISP 10612-3 First edition 1995-06-I 5 Information technology - International Standardized Profile RD - Relaying the MAC service using transparent bridging - Part 3: Token Ring LAN subnetwork-dependent, media-dependent requirements Technologies de /informati
2、on - Profil normal; - European Workshop for Open Systems (EWOS); - Open Systems Environment Implementors Workshop (OIW). ISO/IEC ISP 10612 consists of several parts, under the general title Information technology - International Standardized Profile RD -Relaying the MAC service using transparent bri
3、dging: - Part I : Subnetwork-independent requirements - Part 2: CSMAKD LAN subnetwork-dependent, media-dependent requirements - Part 3: Token Ring LAN subnetwork-dependent, media-dependent requirements - Part 4: Projle RD51.51 (CSMA/CD LAN - CSMAKD UN) 111 Copyright International Organization for St
4、andardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 10612-3:1995(E) 0 ISO/IEC - Part 5: Profile RD51.54 (CSMA/CD LAN - FDDI LAN) -
5、 Part 6: Profile RD54.54 (FDDI LAN - FDDI LAN) - Part 7: Profile RD51.53 (CSMAKD LAN - Token Ring LAN) - Part 8: ProJle RD53.53 (Token Ring LAN - Token Ring MN) - Part 9: Projile RD53.54 (Token Ring LAN - FDDI LAN) Annex A forms an integral part of this part of ISO/IEC ISP 106 12. Annex B is for inf
6、ormation only. iv Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 ISO/IEC ISO/IEC ISP 10612-3
7、:1995(E) Introduction ISO/IEC ISP 10612 is defined in accordance with the principles specified by ISO/IEC TR 10000. The context of Functional Standardization is one area in the overall field of Information Technology (IT) standardization activities, covering base standards, profiles, and registratio
8、n mechanisms. A profile defines a combination of base standards that collectively perform a specific well-defined IT function. Profiles standardize the use of options and other variations in the base standards, and provide a basis for the development of uniform, internationally recognized system tes
9、ts. ISPs are produced not simply to legitimize a particular choice of base standards and options, but to promote real system interoperability. One of the most important roles for an ISP is to serve as the basis for the development (by organizations other than IS0 and IEC) of internationally recogniz
10、ed test methods. The development and widespread acceptance of tests based on this and other ISPs is crucial to the successful realization of this goal. ISOLEC ISP 10612 consists of several parts, of which this is part 3. ISO/IEC ISP 10612-I specifies the profile requirements which are independent of
11、 the subnetwork and media. There are further parts which specify subnetwork-dependent and media-dependent requirements. In addition, for each individual profile, there is a part of ISO/IEC ISP 10612 which identifies the specific requirements of that profile, making reference to appropriate material
12、from part 1 and from the subnetwork-dependent pans. V Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS
13、 -,-,- ISO/IEC ISP 10612-3:1995(E) This page is intentionally left blank 0 ISOAEC Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permit
14、ted without license from IHS -,-,- INTERNATIONAL STANDARDIZED PROFILE OISO/IEC ISO/IEC ISP 10612-3:1995(E) Information technology - International Standardized Profile RD - Relaying the MAC service using transparent bridging - Part 3: Token Ring LAN subnetwork-dependent, media-dependent requirements
15、1 Scope ISO/IEC ISP 10612 is applicable to interworking units concerned with operating in the Open Systems Interconnection (OSI) Local Area Network environment. It specifies a combination of OS1 standards that collectively provide a MAC relay function. This part of ISO/IEC ISP 10612 specifies requir
16、ements that are dependent on the type of subnetwork. It is applicable to an interworking unit which is attached to an ISO/IEC 8802-5 Token Ring LAN subnetwork and is relaying to another LAN subnetwork, not necessarily of the same type. 2 Normative references The following documents contain provision
17、s which, through reference in this text, constitute provisions of this part of ISO/IEC ISP 10612. At the time of publication, the editions indicated were valid. All documents are subject to revision and parties to agreements based on this part of ISO/IEC ISP 10612 are warned against automatically ap
18、plying any more recent editions of the documents listed below, since the nature of references made by ISPs to such documents is that they may be specific to a particular edition. Members of IEC and IS0 maintain registers of currently valid International Standards and ISPs, and ITU-T maintains publis
19、hed editions of its current Recommendations. ISO/IEC 8802-5:1992, Iformation technology - Local and metropolitan area networks - Part 5: Token ring access method and physical layer specifications. ISO/IEC TR 1 OOOO- 1: 1992, Information technology - Framework and taxonomy of International Standardiz
20、ed Profiles - Part 1: Framework ISO/IEC TR 10000-2: 1994, Injnmation technology - Framework and taxonomy of International Standardized Profiles - Part 2: Principles and Taxonomy for OSI Profiles. ISO/IEC 10038: 1993, Information technology - Telecommunications and infirmation exchange between system
21、s - Local area networks - Media access control (MAC) bridges. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without licens
22、e from IHS -,-,- ISO/IEC ISP 10612-3:1995(E) 0 ISO/IEC ISO/IEC ISP 10608-13: 1994, Information technology - International Standardized Profile TAnnnn - Connection- mode Transport Service over Connectionless-mode Network Service - Part 13: MAC sublayer and physical layer dependent requirements for a
23、Token Ring LAN subnetwork ISO/IEC ISP 106 12- 1: 1995, Information technology - International Standardized Profile RD - Relaying the MAC service using transparent bridging - Part I: Subnetwork-independent requirements. ISO/IEC TU 10735: 1993, Information technology - Telecommunications and informati
24、on exchange between systems - Standard Group MAC Addresses. 3 Definitions All the terms used in this part of ISO/IEC ISP 10612 are defined in the documents that are referenced in clause 2. 4 Abbreviations Abbreviations, including acronyms, are used in this part of ISO/IEC ISP 10612 as defined in the
25、 documents that are referenced in clause 2. In addition, the following abbreviations are used: FA: GA: Token Ring LAN Functional Address Group MAC Address 5 Requirements 5.1 General requirements An implementation conforming to this part of ISO/IEC ISP 10612 shall meet all static and dynamic requirem
26、ents for Token Ring LAN subnetworks which are specified in ISO/IEC ISP 10608-13. The destination MAC address to be used for BPDUs shall be as defined in ISO/IEC 10038, table 3-5. 5.2 Requirements for MAC address mapping In addition to the general requirements that are stated in 5.1 above, an impleme
27、ntation conforming to this part of ISOAEC ISP 10612 shall contain a GA-FA address mapping hmction as illustrated architecturally by figure 1. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resal
28、e, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 ISOAEC ISO/IEC ISP 10612-3:1995(E) 10038 Transparent MAC Bridging GA-FA Address Mapping LAN p MAC standard 8802-S Token Ring MAC LAN p PHY standard 8802-5 Token Ring PHY LAN p Token Ring LAN Note - LAN
29、 p denotes an CSMAKD, Token Bus, Token Ring, or FDDI LAN Figure 1 - Model of multicast MAC address mapping in an RD5p.53 MAC bridge The GA-FA address mapping function shall convert between Functional Addresses (FAs) used as multicast MAC destination addresses on Token Ring LANs and the corresponding
30、 Group MAC Addresses (GAS) defined in ISO/IEC TR 10735. The GA-FA address mapping shall be applied only for the MAC addresses shown in table 1 and only in conjunction with the LLC DSAP value shown in table 1. All other destination MAC addresses are passed unchanged. Also, the MAC addresses below sha
31、ll be passed unchanged when they appear in conjunction with DSAP values other than those listed in the table. Table 1 - GA-FA address mapping Group MAC Address Functional Address (GA) (FM 09-00-28-00-00-04 03-00-00-00-02-00 09-00-28-00-00-05 03-00-00-00-0 l-00 0 I-80-C2-OO-OO- 11 03-00-00-0040-00 0
32、1-80-c2-00-00- 12 03-00-00-00-20-00 0 1-80-C2-OO-OO- 16 03-oo-oo-oo- 1 o-00 0 1-80-C2-OO-OO- 17 03-00-00-00-08-00 0 1 -SO-C2-OO-OO- 18 03-00-00-00-04-00 0 1-80-C2-OO-OO- 1 A 03-00-00-40-00-00 DSAP FE FE 02 02 FE FE 02 02 Use IS0 9542 All ESs IS0 9542 All ISs ISO/IEC 158024 Load Server ISOAEC 15802-4
33、 Loadable Device ISO/IEC 10030 All CONS ES ISO/IEC 10030 All CONS SNARES ISO/IEC 15802-2 Manager Stations ISO/IEC 15802-2 Agent Stations When a frame is received by the MAC relay from a Token Ring LAN, and the destination MAC address and DSAP value is one of above FA-DSAP pairs, the GA-FA mapping fu
34、nction shall change the FA to the corresponding GA before the frame is passed to the bridge tin list of base standards selected by the profile; constraints on the allowable answers in the PICS proforma of each base standard. The first two items relate to the profile as a whole and so arc included on
35、ly in those parts of ISO/IEC ISP 10612 which are specific to individual profiles. Each part of ISO/IEC ISP 10612 contains the identification of those PICS proforma constraints which are within its scope. ISO/IEC TR 10000-l indicates that an IPRL may consist either of a simple list of constraints or
36、of amended copies of the base standard PICS proforma. In this part of ISO/IEC ISP 10612 the former method is used. Additional questions have also been included in this IPRL as permitted by ISOiIEC TR IOOOO- 1. A.2 Notation and conventions The notation and conventions used in this IPRL are the same a
37、s those defined for the IPRL in annex A of ISO/IEC ISP 10612-l. A.3 IPRL, for ISO/IEC 10038 The following additional constraints apply to the operation of ISO/IEC 10038 when used in conjunction with a Token Ring MAC bridge port: 5 Copyright International Organization for Standardization Provided by
38、IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 10612-3:1995(E) 0 ISOIIEC Profile item Cl Base item Description Is configuration for selecting either th
39、e Outbound Access Priority or the user-priority for the access_priority possible? Base Constraint reference 3.7.4 0 c2 2120 Is the access_priority set to Outbound 3.7.4 C1:mo.l Access Priority? -c1:0.2 c3 2l2p Is the access_priotity set to 3.7.4 C1:mo.l user_priority? %1:0.2 Definition of selectable
40、 or mutually exclusive options: o.Cn mutually exclusive option: one and only one instance with the same numeral en shall be selected. A.4 IPRL for ISO/IEC 8802-5 Item Description Clause reference Constraint MAP Is the GA-FA address mapping 5.2 m function implemented? DIS Can the GA-FA address mappin
41、g 5.2 m function be disabled? 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 ISOAEC ISO/IE
42、C ISP 10612-3:1995(E) Annex B (informative) Additional references B.1 Introduction Informative reference is made to the International and Standards listed below. The Group MAC Addresses needed for operation of the protocols described in the standards listed below may need special consideration. The
43、necessary address mapping function is described in subclause 5.2 of this part of ISO/IEC ISP 10612. However, the use of the actual protocols using these addresses is not constrained by this ISP. B.2 Informative references IS0 9542: 1988, Information processing systems - Telecommunications and inform
44、ation exchange between systems - End system to intermediate system routeing exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service SO 8473). ISO/IEC 10030: 1995, Information technology - Telecommunications and information exchange between sys
45、tems - End System Routeing Information Exchange Protocol for use in conjunction with ISO/IEC 8878. ISO/IEC 15802-2: 1995, Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Common specifications - Part 2: LAN/MAN management.
46、ISO/IEC 15802-4:1994, Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Common specifications - Part 4: System load protocol. 7 Copyright International Organization for Standardization Provided by IHS under license with ISO
47、Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOilEC ISP 10612-3:1995(E) 8 ISO/IEC ICS 35.100 Descriptors: data processing, information interchange, network interconnection, open systems i
48、nterconnection, local area networks, data transmission, communication procedure, medium access control. Price based on 7 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:49:54 MDTNo reproduction or networking permitted without license from IHS -,-,-