1、INTERNATIONAL TELECOMMUNICATION UN ION ITU-T TELECOMMUNICATION STAN DARDI ZATI ON SECT0 R OF ITU Amendment I X.720 (1 1 /95) DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS OS1 MANAGEMENT INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - STRUCTURE OF MANAGEMENT INFORMATION: MANAGEMENT INFORMATION
2、 MODEL AMENDMENT I: GENERALIZATION OF TERMS Amendment 1 to ITU-T Recommendation X.720 (Previously ?CCITT Recommendation?) IPN= 4862591 0690674 TT5 FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunicati
3、on Standardization Sector (ITU-T) is a permanent organ of the ITU. Some 179 member countries, 84 telecom operating entities, 145 scientific and industrial organizations and 3 8 international organizations participate in ITU-T which is the body which sets world telecommunications standards (Recommend
4、ations). The approval of Recommendations by the Members of ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, 1993). In addition, the World Telecommunication Standardization Conference (WTSC), which meets every four years, approves Recommendations submitted to it and est
5、ablishes the study programme for the following period. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. The text of ITU-T Recommendation X.720, Amendment 1, was approved on 21st of November 1995.
6、 The identical text is also published as ISO/IEC International Standard 10165-1. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency. O ITU 1996 All rights reserved. No part
7、 of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. IPN= 4862591 0690675 931 - ITU-T X-SERIES RECOMMENDATIONS Subject area PUBLIC DATA NETWORKS DATA NETWORKS AND OP
8、EN SYSTEM COMMUNICATIONS (February 1994) ORGANIZATION OF X-SERIES RECOMMENDATIONS Recommendation Series Interfaces Transmission, Signalling and Switching I Services and Facilities I X. 1-X.19 I X.20-X.49 X.50-X.89 Maintenance Administrative Arrangements I Network Aspects I X.90-X. 149 I X. 150-X.179
9、 X.180-X.199 Model and Notation Service Defmitions I OPEN SYSTEMS INTERCONNECTION I I X.200-X.209 X.210-X.219 Connectionless-mode Protocol Specifications I Connection-mode Protocol Specifications I X.220-X.229 I X.23 O-X.239 Layer Managed Objects Conformance Testing I X.260-X.269 I Protocol Identifi
10、cation I X.280-X.289 X.290-X.299 I Security Protocols I X.270-X.279 I General X.300-X.349 Mobile Data Transmission Systems X.350-X.369 Management x.370-x.399 DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS 1 INTERWORKING BETWEEN NETWORKS I I x.500-x.599 Naming, Addressing and Registration Abstract Synta
11、x Notation One (ASN.l) I MESSAGE HANDLING SYSTEMS I X.400-X.499 I X.650-X.679 X.680-X.699 SECURITY OS1 APPLICATIONS I Networking I X.600-X.649 I X.800-X.849 Commitment, Concurrency and Recovery X.850-X.859 Transaction Processing X.860-X.879 Remote Operations X.880-X.899 OPEN DISTRIBUTED PROCESSING X
12、.900-X.999 I OS1 MANAGEMENT I X.700-X.799 I IPN= 4862591 0690676 878 Summary This amendment to Rec. X.720 I ISO/IEC 10165-1 covers the generalization of terms so that these terms and concepts can be reused in the General Relationship Model (see Recommendation X.725). It is intended that the generali
13、zation in terms does not change the semantics in the Management Information Model (see Recommendation X.720). The general approach for the specified terms (characteristics, inheritance, hierarchy, multiple inheritance and specialization) is to remove the term “managed objet class” and use the more g
14、eneral term “class”. It is beneficial if the General Relationship Model does not have different terminology for the same general concepts as the Management Information Model. IT-T Rec. X.720 (1992)/Amd.l(1995 E) i IPN= 4862591 0690678 640 IW-T RECOMMENDATION 1) 3.8.10 other. 4 3.8.11 3) 3.8.16 INFOR
15、MATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - STRUCTURE OF MANAGEMENT INFORMATION: MANAGEMENT INFORMATION MODEL AMENDMENT 1 Generalization of Terms Replace 3.8.1 O with the following: behaviour: The way defined elements of management information relate to resources they model and to each Replac
16、e 3.8.1 1 with the following: characteristic: An element of a class definition. Replace 3.8.16 with the following: inheritance: The conceptual mechanism by which characteristics are acquired by a subclass from its superclass. 4) 3.8.17 basis of the class specialization. Replace 3.8.1 7 with the foll
17、owing: inheritance hierarchy: An hierarchical arrangement of like classes where the hierarchy is organized on the 5) 3.8.20 Add the following between the current 3.8.19 and 3.8.20: invariant: A logical predicate that must remain me for a specified scope. 6) 3.8.22 than one like superclass. Replace t
18、he current 3.8.22 with the following: multiple inheritance: A conceptual mechanism that allows a subclass to acquire characteristics from more 7) 3.8.30 immediately before the emission of a notification. 3.8.31 immediately after the emission of a notification. Add the following between the current 3
19、.8.28 and 3.8.29: pre-condition: A logical predicate that must be true immediately before the execution of an operation or post-condition: A logical predicate that must be true immediately after the execution of an operation or ITU-T Rec. X.720 (1992)/Amd.l(1995 E) 1 IPN= 4862591 0690680 2T9 o/ 3.83
20、1 by the addition of new characteristics. fiepluce inti curreni 3.0.31 wun inejoiiowing- specialization: The technique of deriving a new class fiom one or more existing like classes by inheritance and 9) 3.8.1-3.8.19 remain the same Renumber 3.8 accordingly. The following provides the new numbering:
21、 3.8.20 Invariant: 3.8.21 Managed object boundary: 3.8.22 Mandatos, package: 3.8.23 Multiple inheritance: 3.8.24 Name binding: 3.8.25 Naming schema: 3.8.26 Naming tree: 3.8.27 Package: 3.8.28 Parameter: 3.8.29 Permitted value set: 3.830 Pre-condition: 3.831 Post-condition: 3.832 Relative distinguish
22、ed name: 3.833 Required value set: 3.834 Specialization: 3.835 Subclass: 3.836 Superclass: 3.837 Superior object: 3.838 Subordinate object: 3.839 Uninstantiable managed object class: 10) At the end of 3.8, add the word WOTES”, then change the existing word “NOTE” to “1”. Then add a second Note as fo
23、llows: 2 The term “class” is used when it is intended to be non-specific about the kind of class. The term “class” may refer to a managed object class or some other kind of class (e.g. managed relationship class). The term “like (super) classes means (super) classes of the same kind. 11) The charact
24、eristics of a managed object class comprise attributes, attribute groups, actions, notifications, behaviour and packages. Add the following sentence aJter thefirst sentence of 5. I .2: 12) A package is a collection of amibutes, amibute groups, actions, notifications and behaviour, which is an integr
25、al module of a managed object class definition. Replace the first sentence of 5.1.2. I with the following: I 2 IT-T Rec. X.720 (1992)/Amd.l(1995 E) IPN= 4862591 0690681 135 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Amendment 1 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU DATA NETWORKS AND OPEN
26、SYSTEM COMM UN ICATIONS OS1 MANAGEMENT X.720 (1 1 /95) INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - STRUCTURE OF MANAGEMENT INFORMATION: MANAGEMENT INFORMATION MODEL AMENDMENT 1: GENERALIZATION OF TERMS Amendment 1 to ITU-T Recommendation X.720 (Previously “CCITT Recommendation”) FOREWORD
27、 ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. Some 179 member countries, 84 telecom operating entities, 145 scientific and industrial
28、organizations and 3 8 international organizations participate in ITU-T which is the body which sets world telecommunications standards (Recommendations). The approval of Recommendations by the Members of ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, 1993). In additi
29、on, the World Telecommunication Standardization Conference (WTSC), which meets every four years, approves Recommendations submitted to it and establishes the study programme for the following period. In some areas of information technology which fall within ITU-Ts purview, the necessary standards ar
30、e prepared on a collaborative basis with IS0 and IEC. The text of ITU-T Recommendation X.720, Amendment 1, was approved on 2 1 st of November 1995. The identical text is also published as ISO/IEC International Standard 1 O 165- 1. NOTE In this Recommendation, the expression “Administration” is used
31、for conciseness to indicate both a telecommunication administration and a recognized private operating agency. O ITU 1996 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, withou
32、t permission in writing from the ITU. ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS (February 1994) ORGANIZATION OF X-SERIES RECOMMENDATIONS Subject area PUBLIC DATA NETWORKS Recommendation Series I Services and Facilities I X. 1-X.19 Interfaces Transmission, Signalling
33、 and Switching X.20-X.49 X.50-X.89 I Network Aspects I X.90-X.149 Maintenance Administrative Arrangements X. 150-X.179 X.180-X.199 I OPEN SYSTEMS INTERCONNECTION I Model and Notation Service Definitions X.200-X.209 X.2 1 O-X.2 19 I Connection-mode Protocol Specifications I X.220-X.229 Connectionless
34、-mode Protocol Specifications PICS Proformas X.230-X.239 X.240-X.259 I Protocol Identification I X.260-X.269 Layer Managed Objects Conformance Testing I Security Protocols I X.270-X.279 X.280-X.289 X.290-X.299 General Mobile Data Transmission Systems I INTERWORKING BETWEEN NETWORKS I X.300-X.349 X.3
35、 50-X.3 69 MESSAGE HANDLING SYSTEMS DIRECTORY I Management I X.370-X.3 99 X.400-X.499 X.500-X.599 Networking Naming, Addressing and Registration I OS1 NETWORKING AND SYSTEM ASPECTS I X.600-X.649 X.650-X.679 OS1 MANAGEMENT SECURITY I Abstract Syntax Notation One (ASN.l) I X.680-X.699 X.700-X.799 X.80
36、0-X.849 Transaction Processing Remote Operations I OS1 APPLICATIONS I X.860-X.879 X.880-X.899 I Commitment, Concurrency and Recovery I X.850-X.859 I OPEN DISTRIBUTED PROCESSING I X.900-X.999 Summary This amendment to Rec. X.720 I ISO/IEC 10165-1 covers the generalization of terms so that these terms
37、 and concepts can be reused in the General Relationship Model (see Recommendation X.725). It is intended that the generalization in terms does not change the semantics in the Management Information Model (see Recommendation X.720). The general approach for the specified terms (characteristics, inher
38、itance, hierarchy, multiple inheritance and specialization) is to remove the term “managed objet class” and use the more general term “class”. It is beneficial if the General Relationship Model does not have different terminology for the same general concepts as the Management Information Model. IT-
39、T Rec. X.720 (1992)/Amd.l (1995 E) i ISO/IEC 10165-1 : 1993/Amd.l : 1996 (E) INTERNATIONAL STANDARD ITU-T RECOMMENDATION 4 3.8.10 other. 4 3.8.11 3) 3.8.16 INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - STRUCTURE OF MANAGEMENT INFORMATION: MANAGEMENT INFORMATION MODEL AMENDMENT 1 Generaliza
40、tion of Terms Replace 3.8.1 O with the following: behaviour: The way defined elements of management information relate to resources they model and to each Replace 3.8.11 with the following: characteristic: An element of a class definition. Replace 3.8.16 with the following: inheritance: The conceptu
41、al mechanism by which characteristics are acquired by a subclass from its superclass. 4) 3.8.17 basis of the class specialization. Replace 3.8.1 7 with the following: inheritance hierarchy: An hierarchical arrangement of like classes where the hierarchy is organized on the 5) 3.8.20 Add the followin
42、g between the current 3.8.19 and 3.8.20: invariant: A logical predicate that must remain true for a specified scope. 4) Replace the current 3.8.22 with the following: 3.8.22 than one like superclass. multiple inheritance: A conceptual mechanism that allows a subclass to acquire characteristics from
43、more 7) Add the following between the current 3.8.28 and 3.8.29: 3.8.30 immediately before the emission of a notification. pre-condition: A logical predicate that must be true immediately before the execution of an operation or 3.8.31 immediately after the emission of a notification. post-condition:
44、 A logical predicate that must be true immediately after the execution of an operation or IT-T Rec. X.720 (1992)/Amd.l (1995 E) 1 ISO/IEC 10165-1 : 1993/Amd.l : 1996 (E) 8) 3.8.31 by the addition of new characteristics. Replace the current 3.8.31 with the following: specialization: The technique of
45、deriving a new class from one or more existing like classes by inheritance and 9) 3.8.1-3.8.19 remain the same Renumber 3.8 accordingly. The following provides the new numbering: 3.8.20 Invariant: 3.8.21 Managed object boundary: 3.8.22 Mandatory package: 3.8.23 Multiple inheritance: 3.8.24 Name bind
46、ing: 3.8.25 Naming schema: 3.8.26 Naming tree: 3.8.27 Package: 3.8.28 Parameter: 3.8.29 Permitted value set: 3.8.30 Pre-condition: 3.8.31 Post-condition: 3.8.32 Relative distinguished name: 3.8.33 Required value set: 3.8.34 Specialization: 3.8.35 Subclass: 3.8.36 Superclass: 3.8.37 Superior object:
47、3.8.38 Subordinate object: 3.8.39 Uninstantiable managed object class: 10) At the end of 3.8, add the word “NOTES”, then change the existing word “NOTE” to “1”. Then add a second Note as follows: 2 The term “class” is used when it is intended to be non-specific about the kind of class. The term “cla
48、ss” may refer to a managed object class or some other kind of class (e.g. managed relationship class). The term “like (super) classes” means (super) classes of the same kind. 11) The characteristics of a managed object class comprise attributes, attribute groups, actions, notifications, behaviow and
49、 packages. Add the following sentence after the first sentence of 5.1.2: 12) A package is a collection of attributes, attribute groups, actions, notifications and behaviow, which is an integral module of a managed object class definition. Replace the first sentence of 5.1.2.1 with the following: 2 ITU-T Rec. X.720 (1992)/Amd.l(1995 E)
