ITU-T X 739-1993 Information Technology - Open Systems Interconnection - Systems Management Metric Objects and Attributes - Data Networks and Open System Communications OSI Managem.pdf

1、ITU-T RECMN*X.39 93 4862573 0594785 233 9 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS OS1 MANAGEMENT x.739 (1 1 /93) INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - SYSTEMS MANAGEMENT: METRIC OBJECTS

2、 AND ATTRIBUTES ITU-T Recommendation X.739 (Previously “CCITT Recommendation”) Foreword IT (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The IT Telecommunication Standardization Sector (IT-T) is a permanent organ of the ITU. Some

3、 179 member countries, 84 telecom operating entities, 145 scientific and industrial organizations and 38 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 cove

4、red 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 establishes the study programme for the following period. In some areas of

5、information technology which fill within IT-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. The text of IT-T Recommendation X.739 was approved on 16th November 1993. The identical text is also published as ISO/IEC International Standard 10164-11. NOTE In t

6、his Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1994 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mech

7、anical, including photocopying and microfilm. without permission in writing from the ITU. 1 2 3 4 5 6 7 8 9 10 11 I2 13 CONTENTS scope Normative references . 2.1 Identical Recommendations I International Standards 2.2 Paired Recommendations I International Standards equivalent in technical content 2

8、.3 Additional references Definitions 3.1 Basic reference model definitions . 3.2 Management framework definitions . 3.3 Systems management overview definitions 3.4 Definition of management information definitions . 3.5 Standard definitions of statistics . 3.6 CMIS definitions . 3.7 Additional defini

9、tions . Abbreviations . Conventions Requirements Models 7.1 The Metric object model . 7.2 Supporting metric objects . 7.3 7.4 Metric objects and models for workload monitoring 7.5 Generic definitions . 8.1 Managed objects . 8.3 Compliance . Service definition . System management functional units . 1

10、1.1 Abstract syntax i 1.2 Negotiation of functional units . Severity indicating gauge-threshold model . Use of metric objects for workload monitoring 8.2 Imported generic definitions . Protocol and abstract syntax . Relationships with other functions . Conformance 13.1 General conformance class requ

11、irements 13.2 Dependent conformance class requirements . 13.3 Conformance to support managed object definitions Anexo A . Metric objects A.l Managed object class definitions A.2 Package definitions . A.3 Attribute definitions A.4 Name binding definitions AS ASN.l definitions . ITU-T Rec . X.739 (199

12、3 E) Page 1 1 2 2 2 3 3 3 3 3 3 4 4 4 5 5 5 5 7 8 9 11 12 12 25 26 26 26 26 26 30 30 30 30 31 31 32 32 34 36 39 39 1 ITU-T RECMN*X.739 93 4862531 0594988 T42 = Page 41 B.l Introduction . 41 44 C.2 UWMA gauge mean behaviour 44 46 Annex B . EWMA data enhancement algorithms B.2 Algorithm behaviour . 41

13、 C.l Uniformly weighted moving average . 44 Annex C - Uniformly weighted moving average smoothing algorithm . Annex D -Workload reporting requirements . ii ITU-T RW . X.739 (1993 E) ITU-T RECMNX(X.739 93 m 4862591 0594989 989 m Summary This Recommendation I International Standard specifies performan

14、ce tools to observe characteristics of resources either directly within managed objects or through the use of metric objects. The tools also include provision of statistics, such as mean and percentile calculations, and thresholds to generate notifications. ITU-T Rec. X.739 (1993 E) . 111 ITU-T RECM

15、N*X.739 93 m 4862.591 O594990 bTO m ISOAEC 10164-11 : 1994(E) INTERNATIONAL STANDARD CCITT RECOMMENDATION INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - SYSTEMS MANAGEMENT: METRIC OBJECTS AND ATTRIBUTES 1 Scope This Recommendation I International Standard defines the metric objects and attr

16、ibutes function. The metric objects and attributes function is a systems management function which may be used by an application process in a centralised or decentralised management environment to interact for the purpose of systems management, as defined by CCITI: Rec. X.700 I ISOAEC 7498-4. This R

17、ecommendation I International Standard defines a function which consists of generic definitions. This function is positioned in the application layer of the OS1 reference model, CCITT Rec. X.200 I IS0 ?498, and is defined according to the model provided by IS0 9545. The role of systems management fu

18、nctions is described by CCITT Rec. X.701 I ISOAEC 10040. This Recommendation I International Standard - - - identifies the set of requirements satisfied by the function; provides a model for the behaviour of general metric objects: provides a model for the behaviour of the metric objects defined in

19、this Recommendation I International Standard; specifies the management requirements of the function and how these are realised by specification of managed objects and their behaviour; specifies the abstract syntax of the parameters of the MAPDUs that will be used to refer to managed objects and thei

20、r attributes; and - - - defines managed objects. This Recommendation I International Standard - - does not define the nature of any implementation of this Recommendation I International Standard; does not specify the manner in which management is to be accomplished by the user of this Recommendation

21、 I International Standard; does not define the nature of any interactions which result in the use of this Recommendation I International Standard; does not specify the services necessary for the establishment, normal and abnormal release of a management association; does not define the interactions

22、which result by the simultaneous use of several management functions; and does not define connection establishment or authorization requirements for the use of these functions or for any associated activity. - - - - 2 Normative references The following CCITT Recommendations and International Standar

23、ds contain provisions which, through reference in this text, constitute provisions of this Recommendation I International Standard. At the time of publication, the editions indicated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recomm

24、endation I International Standard are encouraged to investigate the possibility of applying the most recent editions of the Recommendation and Standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. The CCITT Secretariat maintains a list of the c

25、urrently valid CCIIT Recommendations. ITU-T RW. X.739 (1993 E) 1 ITU-T RECMN*X*739 93 4Bb2593 O594993 537 = ISO/IEC 10164-11 : 1994(E) 2.1 Identical Recommendations I International Standards - CCITT Recommendation X.701 (1992) I ISOAEC 10040: 1992, Information technology - Open Systems Interconnecti

26、on - Systems management overview. CCITT Recommendation X.720 (1992) I ISO/IEC 10165-1: 1993, Information technology - Open Systems Interconnection - Structure of management information: Management information model. CCITT Recommendation X.721 (1992) I ISO/IEC 10165-2: 1992, Information technology -

27、Open Systems Interconnection - Structure of management information: Definition of management information. CCITT Recommendation X.722 (1992) I ISOAEC 10165-4:1992, Information technology - Open Sysfems Interconnection - Structure of management information: Guidelines for the definition of managed obj

28、ects. CCITT Recommendation X.730 (1992) I ISO/IEC 10164-1 : 1992, Information technology - Open Systems Interconnection - Systems Management: Object management function. CCITT Recommendation X.731 (1992) I ISOIIEC 10164-2:1992, Information technology - Open Systems Interconnection - Systems Manageme

29、nt: State management function. CCITT Recommendation X.733 (1992) I ISOAEC 10164-4: 1992, Information technology - Open Systems Interconnection - Systems Management: Alarm reporting function. - - - - - - 2.2 Paired Recommendations I International Standards equivalent in technical content - CCITT Reco

30、mmendation X.200 (1989), Reference model of Open Systems Interconnection for CCITT Applications. IS0 7498: 1984, Information processing system - Open Systems Interconnection - Basic Reference Model. CCITT Recommendation X.208 (1988), Specifcation of abstract syntax notation one (ASN.1). ISOAEC 8824:

31、 1990, Information technology - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN. I ). CCITT Recommendation X.209 (1988), Specification of Basic Encoding Rules for abstract syntax notation. IS0 8825: 1990, Information technology - Open Systems Interconnection - Speci

32、fication of Basic Encoding Rules for Abstract Syntax Notation One (ASN. I). - - - CCITT Recommendation X.700 (1992). Munagement framework definition for Open Systems Interconnection (OSI) for CCIT applications. IS0 7498-4: 1989, Information processing systems - Open Systems Interconnection - Basic R

33、eference Model - Part 4: Management framework. CCITT Recommendation X.710 (1991), Common management information service definition for CCITT applications. ISOAEC 9595: 1991, Information technology - Open Systems Interconnection - Common management information service definition. CCITT Recommendation

34、 X.711 (199 l), Common management information protocol specification for CCIT applications. ISOAEC 9596-1 : 1991, Information technology - Open Systems Interconnection - Common management information protocol specification. - - 2.3 Additional references - IS0 3534-1:1993, Statistics - Vocabulary and

35、 symbols - Part I: Probability and general statistical tem. ISO/IEC 9545: 1989, Information processing systems - Open System Interconnection - Application Layer structure. CCIT Recommendation M.3 100 (1 992), Generic Network Information Model. - - 2 ITU-T RW. X.739 (1993 E) ITU-T RECMNxX-739 93 m 48

36、62.593 0594992 473 ISO/IEC 10164-11 : 1994(E) 3 Definitions For the purposes of this Recommendation I International Standard, the following definitions apply. 3.1 Basic reference model definitions This Recommendation I International Standard makes use of the following terms defined in CCITT Rec. X.2

37、00 I IS0 7498: a) open system; b) OS1 resource; c) systems management. 3.2 Management framework definitions This Recommendation I International Standard makes use of the following terms defined in CCm Rec. X.700 I ISO/IEC 7498-4: a) managed object; b) management information; c) OS1 management. 3.3 S

38、ystems management overview definitions This Recommendation I International Standard makes use of the following terms defined in CCITT Rec. X.701 I ISOAEC 10040: a) agent: b) agent role; c) managed system; d) e) management operation; f) manager: g) manager role: h) managing system; i) notification; j

39、) systems management functional unit. management application protocol data unit: 3.4 This Recommendation I International Standard makes use of the following terms defined in CCITT Rec. X.721 I Definition of management information definitions ISOAEC 10165-2: a) counter: b) gauge; c) threshold; d) cou

40、nter-threshold; e) gauge-threshold. 3.5 Standard definitions of statistics This Recommendation I International Standard makes use of the following terms defined in IS0 3534-1: a) b) c) variance. fractile of a probability distribution; mean of a random variable; ITU-T Rec. X.739 (1993 E) 3 ITU-T RECM

41、N+X-739 93 4862591 0594993 30T = ISO/IEC 10164-11 : 1994(E) 3.6 CMIS definitions This Recommendation I International Standard makes use of the following terms defined in CCT Rec. X.710 I ISO/IEC 9595: a) attribute; b) Common Management Information Service; c) invoker; d) performer. 3.7 Additional de

42、finitions For the purposes of this Recommendation I International Standard, the following definitions apply. 3.7.1 already allocated for use, as well as resources available for future allocation. 3.7.2 capacity: The current amount of resource (e.g octets per second) available to users, including res

43、ources granularity period: The time between the initiation of two successive scans. 3.7.3 metric: A value calculated from observed attribute values. 3.7.4 metric algorithms or whose value represents the output of such an algorithm. 3.7.5 results. metric attribute: An attribute of a metric object who

44、se value is either used as a parameter of one or more metric algorithm: The behaviour of a metric object which models a formalized process to calculate specified 3.7.6 attributes observed in managed objects. 3.7.7 observed attribute: An attribute of a managed object whose value is being scanned by a

45、 metric object or summarization object. metric object: A managed object that contains at least one attribute whose value is calculated from values of 3.7.8 3.7.9 3.7.10 is synchronized. 3.7.11 measured rate approaches the instantaneous rate as the specified interval of time approaches zero. 3.7.12 b

46、ut rejected due to non-available capacity. 3.7.13 resource request rate: The rate of the number of requests or the rate of the amount of resources requested. 3.7.14 resource utilization: The amount of capacity in use. Resource utilization can be measured as instantaneous or as an estimate of the mea

47、n over a time interval. Instantaneous resource utilization is the amount of capacity in use at a given point in time. Estimated mean resource utilization is an estimate of the mean resource utilization, taken over a time interval. 3.7.15 observed object: A managed object with one or more observed at

48、tributes. percentile: The K-percentile of a probability distribution is the U100 fractile of the distribution. period synchronization time: The time to which the start of a repeating time period (e.g. granularity period) rate: The change in a value over a specified interval of time. NOTE - Instantan

49、eous rate is the derivative of the value with respect to time and cannot generally be measured. The rejection rate: The rate of the number of requests rejected or the rate of the amount of requested resources scan: A sampling process of observing attribute values at a specified point in time. 4 Abbreviations CMIS Common Management Information Service EWMA Exponentially Weighted Moving Average GP Granularity Period MAPDU Management Application Protocol Data Unit 4 ITU-T Rec. X.739 (1993 E) ITU-T RECMNxX.739 93 48b2591 05q4794 24b W ISOAEC 10164-11 : 1994(E) max min MOCS MTP P