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1、INTERNATIONAL STANDARDIZED PROFILE ISO/IEC ISP 10608-12 First edition 1996-07-01 Information technology - International Standardized Profile TAnnnn - Connection-mode Transport Service over Connectionless-mode Network Service - Part 12: MAC sublayer and requirements for a subnetwork physical layer de
2、pendent CSMA/CD LAN Technologies de /information - Profil normali - European Workshop for Open Systems (EWOS); - Open Systems Environment Implementors Workshop (OIW). lSO/lEC ISP 10608 consists of several parts, under the general title Information technology - International Standardized Profile TAnn
3、nn - Connection-mode Transport Service over Connectionless-mode Network Service: -Part 1: General overview and subnetwork-type independent requirements - Part 2: TASl projle including subnetwork-type dependent requirements for CSMAKD Local Area Networks (LANs) . . . 111 Copyright International Organ
4、ization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 10608-12:1996(E) 0 ISOREC - Part 4: Dejnition of proJile TA53, o
5、peration over a Token Ring LAN suhnehvork - Part 5: TAI 11 l/TAl I21 profiles including subnetwork-dependent requirements for X.25 packet-switched data networks using virtual calls - Part 6: DeJnition of pro/ile TA54, operation over an FDDI LAN subnetwork - Part 12: MAC sublayer and ph.vsical lclyer
6、 dependent requirements for a CSMlKD LAN subnetwork - Part 13: htl C subla-ver and physical layer dependent requirements for a Token Ring L/1 N subnetwork - Part 14: MAC, PHY and PAID sublayer dependent and Station Management requirements over an FDDI LAN subnet- work Annexes A and B form an integra
7、l part of this part of ISO/IEC ISP 10608. Annex C is for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted wit
8、hout license from IHS -,-,- 0 ISO/IEC ISO/IEC ISP 10608-12: 1996(E) Introduction ISO/IEC ISP 10608 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 act
9、ivities, covering base standards, profiles, and registration 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 de
10、velopment of uniform, internationally recognized system tests. 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 organi
11、zations other than IS0 and IEC) of internationally recognized test methods. The development and widespread acceptance of tests based on this and other ISPs is crucial to the successful realization of this goal. ISO/IEC ISP 10608 consists of several parts, of which this is part 12. ISO/IEC ISP 10608-
12、l specifies the profile requirements which are independent of 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 10608 which identities the specific requiremen
13、ts of that profile, making reference to appropriate material from part 1 and from the subnetwork-dependent Parts. V Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo
14、 reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDIZED PROFILE 0 ISO/IEC ISO/IEC ISP 10608-12: 1996(E) Information technology - International Standardized Profile TAnnnn - Connection-mode Transport Service over Connectionless-mode Network Service - Part 12: M
15、AC sublayer and physical layer dependent requirements for a CSMA/CD LAN subnetwork 1 Scope 1.1 General This part of ISO/IEC ISP 10608 is applicable to end systems and relay systems operating over CSMACD LAN subnetworks in the Open Systems Interconnection (0%) environment. This part of ISO/IEC ISP 10
16、608 specifies the subnetwork-type dependent requirements for the MAC sublayer and physical layer when the end system or relay system is attached to a CSMAKD LAN subnetwork. 1.2 Position within the taxonomy This part of ISO/IEC ISP 10608 relates to any of the transport (TX, Ux) or relay (Rx) profiles
17、 defmed in ISO/IEC TR 10000-2, Principles and Taxonomy for OS1 Profiles, where such profile uses subnetwork type 51 (CSMACD Local Area Network). Specifically, this part of ISO/IEC ISP 10608 provides a common set of CSMA/CD subnetwork requirements whenever subnetwork identifier 5 1 is associated with
18、 a transport group or relay type. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this part of ISO/IEC ISP 10608. At the time of publication, the editions indicated were valid. All documents are subject to revision, an
19、d parties to agreements based on this part of ISO/IEC ISP 10608 are warned against automatically applying 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
20、 maintain registers of currently valid International Standards and ISPs, and ITU maintains published editions of its current Recommenda- tions. ISOIIEC 8802-3:1993, Information technology - Local and metropolitan area networks - Part 3: Carrier sense multiple access with collision detection (CSIWKD)
21、 access method andphysical layer specations. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted without license from IHS -,-,-
22、ISO/IEC ISP 1060%12:1996(E) 0 ISO/IEC ISOIIEC 9646-7: 1995, Information technology - Open Systems Interconnection - Conformance testing methodology andfiamework - Part 7: Implementation Conformance Statements. ISO/IEC TR 10000-l: 1995, Information technology - Framework and taxonomy of International
23、 Standardized Profiles - Part I: General principles and documentationamework. ISO/IEC TR lOOOO-2:1995, Information technology - Framework and taxonomy of International Standardized Profiles - Part 2: Principles and Taxonomy for OSIprojles. 3 Definitions All the terms used in this part of ISO/IEC ISP
24、 10608 are defined in the documents that are referenced in clause 2. 4 Abbreviations All abbreviations, including acronyms, are used in this part of ISO/IEC ISP 10608 as defmed in the documents that are referenced in clause 2. 5 Conformance 5.1 Static conformance requirements 5.1.1 General requireme
25、nts An implementation conforming to this part of ISO/IEC ISP 10608 shall meet the requirements for ISO/IEC 8802-3 below. It shall implement all the features identified as requirements for ISO/IEC 8802-3 in the ISPICS requirements list in annex A. The implementation shall: a meet the requirements for
26、 lOBASE specified in 5.1.2 below, and/or the requirements for lOBASE specified in 5.1.3 below, and/or the requirements for 1 OBASE-T specified in 5.1.4 below; b) support the functions of the Media Access Control protocol defined in ISO/IEC 8802-3; cl meet the Physical layer requirements defined in I
27、SO/IEC 8802-3, clause 7: Physical Signalling (PLS) and Attachment Unit Interface (AUI) Specifications; 4 if an AU1 cable is supplied, meet the requirements specified in ISO/IEC 8802-3, clause 7; 5.1.2 Requirements for lOBASE The implementation shall: a if an MAU is supplied, meet the requirements sp
28、ecified in ISO/IEC 8802-3, subclauses 8.1, 8.2, 8.3, 8.5 and 8.7; Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted without lice
29、nse from IHS -,-,- 0 ISO/IEC ISO/IEC ISP 10608-12: 1996(E) if an MAU is not supplied, then provide an externally accessible AUI; b) if components of the media are supplied, meet the requirements specified in ISO/IEC 8802-3, subclauses 8.4, 8.5, 8.6, and 8.7. 5.1.3 Requirements for lOBASE The impleme
30、ntation shall: 4 if an h4AU is supplied, meet the requirements specified in ISO/IEC 8802-3, subclauses 10.1, 10.3, 10.4, 10.6 and 10.8; if an h4AU is not supplied, then provide an externally accessible AUI; b) if components of the media are supplied, meet the requirements specified in ISO/IEC 8802-3
31、, subclauses 10.5, 10.6, 10.7 and 10.8. 5.1.4 Requirements for lOBASE-T The implementation shall: a) if an MAU is supplied, meet the requirements specified in ISO/IEC 8802-3, subclauses 14.1, 14.2, 14.3, 14.5 and 14.7; if an MAU is not supplied, then provide an externally accessible AUI; b) if compo
32、nents of the media are supplied, meet the requirements specified in ISO/IEC 8802-3, subclauses 14.4, 14.5, 14.6 and 14.7. 5.2 Dynamic conformance requirements An implementation conforming to this part of ISO/IEC ISP 10608 shall carry out the supported ISO/IEC 8802-3 functions in accordance with the
33、procedures specified in ISO/IEC 8802-3. It shall behave in accordance with the requirements of the ISPICS requirements list in annex A. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21
34、/2007 09:38:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 10608-12:1996(E) 0 ISO/IEC Annex A (normative) Profile Requirements List A.1 Introduction ISO/IEC 9646-7 requires that a Profile Requirements List is provided for each profile and captures: a the gen
35、eral options of the profile as a whole; b) a list of specifications selected and combined in the profile; and references to the related ICS proforma; C for each of these referenced base specifications, a section of the profile RL expressing the restrictions upon allowed support answers in the corres
36、ponding PICS proforma and information object ICS proforma. This section of the profile RL is derived from the ICS proformas of the relevant base specifications, indicating the changes of status values necessary to express the profile requirements. The first two items relate to the profile as a whole
37、, and so are included only in those parts of ISO/IEC ISP 10608 which are specific to individual profiles. But each part of ISO/IEC ISP 10608 contains the identification of those PICS proforma constraints which are within its scope. ISO/IEC 9646-7 indicates that a profile RL may consist either of a s
38、imple list of constraints or of amended copies of the base PICS proforma. In this part of ISOAEC ISP 10608 the former method is used. A.2 Notation and conventions A.2.1 Introduction In many cases the constraints imposed by the profile RL are expressed in the form of symbols indicating the status in
39、the context of this part of ISO/IEC ISP 10608 of those base standard PICS proforma items to which the constraints apply. The symbols used are defined in the following two subclauses. A.2.2 Notation The following symbols are used to identify constraints on the capabilities to be supported by a confor
40、ming implementation: 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 ISO/IEC ISO/IEC ISP 10
41、608-12: 1996(E) 4 Symbols directly specifying status: Symbol Meaning m 0 mandatory optional not applicable b) Other associated notation: Symbol Meaning : o.-QO conditional (see below) mutually exclusive or selectable option (see below) logical negation Symbols of the form : are used as an abbreviate
42、d way of expressing a condition wherein the status is as identified if the specified item is supported, and otherwise the status is not applicable. So, for example, “ABC:m” would be equivalent to a conditional status “if ABC then m else -I. Symbols of the form o. are used when one or more of a set o
43、f options may be selected. In this case, is a number which groups the set of selectable options together and it also refers to a definition at the end of the subclause in which it is used. The definition specifies whether the options are mutually exclusive and any other conditions which apply. A.2.3
44、 Identification of PICS proforma items PICS proforma items are identified by using the subclause number followed by a solidus followed by the item reference of the relevant PICS proforma line. When identifying an item within the same subclause, the subclause number and solidus are not necessarily pr
45、esent. A.3 Profile RL for ISO/IEC 8802-3 Since the base standard does not itself have a stable PICS profotma, interim base standard PICS profotma information is provided in annex B. This part of ISO/IEC ISP 10608 imposes the following constraints: 5 Copyright International Organization for Standardi
46、zation Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 10608-12:1996(E) Functions and interfaces Base item B.2.400BASE5 1 OBASES B.2.4/1OBAS
47、E2 1 OBASE2 B.2.4/1 OBASE-T 1 OBASE-T B.2.4iMAUs Is an MAU supplied? B.2.4/AUIa Description Is an AU1 externally accessible? Constraint o. 1 selectable option - at least one shall be selected (at least one of the media options shall be selected) 0.1 0.1 0.1 AUIa:o -AUIa:m MAus:o -MAUs:m Definition o
48、f selectable or mutually exclusive options: 0 ISO/IEC 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 09:38:38 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 ISO/IEC ISO/IEC ISP 1060%12:1996(E) Annex B (normative) Assumed base standard PICS proforma B.l Introduction This annex contains the PICS proforma information assumed for those base stan