1、INTERNATIONAL TELECOMMUNICATION UNIONITU-T X.754TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU(02/2000)SERIES X: DATA NETWORKS AND OPEN SYSTEMCOMMUNICATIONSOSI management Management functions and ODMAfunctionsEnhanced event control functionITU-T Recommendation X.754(Formerly CCITT Recommendation)ITU-
2、T X-SERIES RECOMMENDATIONSDATA NETWORKS AND OPEN SYSTEM COMMUNICATIONSPUBLIC DATA NETWORKSServices and facilities X.1X.19Interfaces X.20X.49Transmission, signalling and switching X.50X.89Network aspects X.90X.149Maintenance X.150X.179Administrative arrangements X.180X.199OPEN SYSTEMS INTERCONNECTION
3、Model and notation X.200X.209Service definitions X.210X.219Connection-mode protocol specifications X.220X.229Connectionless-mode protocol specifications X.230X.239PICS proformas X.240X.259Protocol Identification X.260X.269Security Protocols X.270X.279Layer Managed Objects X.280X.289Conformance testi
4、ng X.290X.299INTERWORKING BETWEEN NETWORKSGeneral X.300X.349Satellite data transmission systems X.350X.399MESSAGE HANDLING SYSTEMS X.400X.499DIRECTORY X.500X.599OSI NETWORKING AND SYSTEM ASPECTSNetworking X.600X.629Efficiency X.630X.639Quality of service X.640X.649Naming, Addressing and Registration
5、 X.650X.679Abstract Syntax Notation One (ASN.1) X.680X.699OSI MANAGEMENTSystems Management framework and architecture X.700X.709Management Communication Service and Protocol X.710X.719Structure of Management Information X.720X.729Management functions and ODMA functions X.730X.799SECURITY X.800X.849O
6、SI APPLICATIONSCommitment, Concurrency and Recovery X.850X.859Transaction processing X.860X.879Remote operations X.880X.899OPEN DISTRIBUTED PROCESSING X.900X.999For further details, please refer to the list of ITU-T Recommendations.ITU-T X.754 (02/2000) iITU-T Recommendation X.754Enhanced event cont
7、rol functionSummaryThis Recommendation presents enhancement event control functions to handle the unavailability ofthe logging systems.SourceITU-T Recommendation X.754 was prepared by ITU-T Study Group 4 (1997-2000) and approvedunder the WTSC Resolution 1 procedure on 4 February 2000.ii ITU-T X.754
8、(02/2000)FOREWORDThe International Telecommunication Union (ITU) is the United Nations specialized agency in the field oftelecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ ofITU. ITU-T is responsible for studying technical, operating and tariff question
9、s and issuing Recommendationson them with a view to standardizing telecommunications on a worldwide basis.The World Telecommunication Standardization Conference (WTSC), which meets every four years,establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on
10、thesetopics.The approval of ITU-T Recommendations is covered by the procedure laid down in WTSC Resolution 1.In some areas of information technology which fall within ITU-Ts purview, the necessary standards areprepared on a collaborative basis with ISO and IEC.NOTEIn this Recommendation, the express
11、ion “Administration“ is used for conciseness to indicate both atelecommunication administration and a recognized operating agency.INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation mayinvolve the use of a claimed Intellectua
12、l Property Right. ITU takes no position concerning the evidence,validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or othersoutside of the Recommendation development process.As of the date of approval of this Recommendation, ITU had not received notice
13、 of intellectual property,protected by patents, which may be required to implement this Recommendation. However, implementors arecautioned that this may not represent the latest information and are therefore strongly urged to consult theTSB patent database. ITU 2001All rights reserved. No part of th
14、is 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 ITU.ITU-T X.754 (02/2000) iiiCONTENTSPage1 Scope . 12 Normative references 22.1 Identical Recommendations | International Standa
15、rds . 22.2 Paired Recommendations | International Standards equivalent in technical content. 23 Definitions 33.1 Basic reference model definitions . 33.2 Service convention definitions 33.3 Management framework definitions 33.4 Systems management overview definitions. 33.5 Common management informat
16、ion service definitions 33.6 OSI conformance testing definitions. 43.7 Definitions from ITU-T X.734 43.8 Definitions from ITU-T X.735 43.9 Additional definitions. 44 Abbreviations . 45 Conventions . 46 Requirements . 56.1 Use cases 56.1.1 Event report administration 56.1.2 Deliver event reports 67 A
17、nalysis and design 77.1 Enhanced event control model 77.1.1 Overview of Objects 77.1.2 Overview of object behaviour 87.1.3 Disseminator log 107.1.4 Disseminator queue . 107.2 Class diagrams . 127.3 Sequence diagrams . 157.3.1 Real-time event emission in unconfirmed mode. 157.3.2 Real-time event emis
18、sion in confirmed mode. 167.3.3 Delayed event emission in unconfirmed mode . 177.3.4 Event in queue time-out. 187.3.5 Event in queue time-out for last user 198 Management information 19iv ITU-T X.754 (02/2000)Page8.1 Managed object classes. 198.1.1 Disseminator log 198.1.2 Disseminator queue . 208.2
19、 Conditional packages 208.3 Attributes. 218.3.1 Aging period 218.3.2 Queuing discipline. 218.3.3 Record ID list 218.3.4 Current queue size . 218.3.5 Maximum queue size . 218.3.6 Queue alarm threshold . 228.3.7 Queue full action . 229 ASN.1 module 22ITU-T X.754 (02/2000) 1ITU-T Recommendation X.754En
20、hanced event control function1ScopeThis function is an enhancement to the functionality specified in ITU-T X.734 | ISO/IEC 10164-5and provides the capability for configuring managed systems to be able to retain events in case theconnection to the managing system is lost. This function models the ret
21、ention of event reports andthe forwarding of these retained event reports by an aggregate of support managed objects called adisseminator complex. The disseminator complex consists of one disseminator log and at least onedisseminator queue managed object instance. Event reports, which cannot be forw
22、arded, due tocommunications failure conditions may be retained for subsequent transmission. The model for theenhanced event control function is built upon the model for logging defined in ITU-T X.735 |ISO/IEC 10164-6 and the event report management model defined in ITU-T X.734 |ISO/IEC 10164-5. Howe
23、ver, the mechanisms and managed objects used to implement thisfunctionality though derived from the above Recommendations are different from those specifiedthere. This model will support forwarding of event reports under both normal (real-time) and failureconditions and may, therefore, be implemente
24、d as a sole mechanism as an alternative to themechanisms specified in ITU-T X.734. However, this function is not a replacement for thefunctionality specified in ITU-T X.734 and systems not requiring storage of events during failureconditions need only support the simpler functionality specified in I
25、TU-T X.734.This Recommendation: establishes user requirements for the enhanced event control function; establishes models that relate the services provided by the function to user requirements; defines the services provided by the function; specifies the protocol that is necessary in order to provid
26、e the services; defines the relationship between the services and SMI operations and notifications; defines relationships with other systems management functions; specifies conformance requirements.This Recommendation does not: define the nature of any implementation intended to provide the enhanced
27、 event controlfunction; specify the manner in which management is accomplished by the user of the enhanced eventcontrol function; define the nature of any interactions which result in the use of the enhanced event controlfunction; specify the services necessary for the establishment, normal and abno
28、rmal release of amanagement association; specify the authorization requirements for the use of the enhanced event control function orfor any associated activity; define the managed objects related to the management of particular protocol machines.2 ITU-T X.754 (02/2000)2 Normative referencesThe foll
29、owing ITU-T Recommendations and other references contain provisions which, throughreference in this text, constitute provisions of this Recommendation. At the time of publication, theeditions indicated were valid. All Recommendations and other references are subject to revision;users of this Recomme
30、ndation are therefore encouraged to investigate the possibility of applying themost recent edition of the Recommendations and other references listed below. A list of the currentlyvalid ITU-T Recommendations is regulary published.2.1 Identical Recommendations | International Standards ITU-T X.200 (1
31、994) | ISO/IEC 7498-1:1994, Information technology Open SystemsInterconnection Basic Reference Model: The Basic Model. ITU-T X.210 (1993) | ISO/IEC 10731:1994, Information technology Open SystemsInterconnection Basic Reference Model: Conventions for the definition of OSI services. ITU-T X.680 (1997)
32、 | ISO/IEC 8824-1:1998, Information technology Abstract SyntaxNotation One (ASN.1): Specification of basic notation. ITU-T X.681 (1997) | ISO/IEC 8824-2:1998, Information technology Abstract SyntaxNotation One (ASN.1): Information object specification. ITU-T X.682 (1997) | ISO/IEC 8824-3:1998, Infor
33、mation technology Abstract SyntaxNotation One (ASN.1): Constraint specification. ITU-T X.683 (1997) | ISO/IEC 8824-4:1998, Information technology Abstract SyntaxNotation One (ASN.1): Parameterization of ASN.1 specifications. ITU-T X.690 (1997) | ISO/IEC 8825-1:1998, Information technology ASN.1 enco
34、dingrules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) andDistinguished Encoding Rules (DER). ITU-T X.691 (1997) | ISO/IEC 8825-2:1998, Information technology ASN.1 encodingrules Specification of Packed Encoding Rules (PER). ITU-T X.701 (1997) | ISO/IEC 10040:1998, In
35、formation technology Open SystemsInterconnection Systems management overview. ITU-T X.710 (1997) | ISO/IEC 9595:1998, Information technology Open SystemsInterconnection Common management information service. ITU-T X.721 (1992) | ISO/IEC 10165-2:1992, Information technology Open SystemsInterconnectio
36、n Structure of management information: Definition of managementinformation. ITU-T X.730 (1992) | ISO/IEC 10164-1:1993, Information technology Open SystemsInterconnection Systems Management: Object management function. ITU-T X.731 (1992) | ISO/IEC 10164-2:1993, Information technology Open SystemsInte
37、rconnection Systems Management: State management function. ITU-T X.735 (1992) | ISO/IEC 10164-6:1993, Information technology Open SystemsInterconnection Systems Management: Log control function. ITU-T X.739 (1993) | ISO/IEC 10164-11:1994, Information technology Open SystemsInterconnection Systems Ma
38、nagement: Metric objects and attributes.2.2 Paired Recommendations | International Standards equivalent in technical content ITU-T X.290 (1995), OSI conformance testing methodology and framework for protocolRecommendations for ITU-T applications General concepts.ITU-T X.754 (02/2000) 3ISO/IEC 9646-1
39、:1991, Information technology Open Systems Interconnection Confor-mance testing methodology and framework Part 1: General concepts. ITU-T X.700 (1992), Management framework for Open Systems Interconnection (OSI) forCCITT applications.ISO/IEC 7498-4:1989, Information processing systems Open Systems I
40、nterconnection Basic Reference Model Part 4: Management framework.3 DefinitionsFor the purposes of this Recommendation, the following definitions apply.3.1 Basic reference model definitionsThis Recommendation makes use of the following terms defined in ITU-T X.200 | ISO/IEC 7498-1:a) open system;b)
41、systems management.3.2 Service convention definitionsThis Recommendation makes use of the following term defined in ITU-T X.210 | ISO/IEC 10731: primitive.3.3 Management framework definitionsThis Recommendation makes use of the following terms as defined in ITU-T X.700 andISO/IEC 7498-4:a) managemen
42、t information;b) managed object;c) systems-management-application-entity.3.4 Systems management overview definitionsThis Recommendation makes use of the following terms defined in ITU-T X.701 | ISO/IEC 10040:a) agent role;b) dependent conformance;c) general conformance;d) management support object;e
43、) manager role;f) notification;g) systems management functional unit;h) systems management operation.3.5 Common management information service definitionsThis Recommendation makes use of the following terms defined in ITU-T X. 710 | ISO/IEC 9595:a) attribute;b) common management information services
44、;c) common management information service element.4 ITU-T X.754 (02/2000)3.6 OSI conformance testing definitionsThis Recommendation makes use of the following term defined in ITU-T X.290 andISO/IEC 9646-1: system conformance statement.3.7 Definitions from ITU-T X.734a) Discriminator;b) event forward
45、ing discriminator;c) event report management function.3.8 Definitions from ITU-T X.735a) Log;b) log record.3.9 Additional definitions3.9.1 disseminator complex: An aggregation of managed objects, when taken together providethe capability of storing and queuing event reports for multiple destinations
46、. For example to supportthe delivery of event reports to systems which may be temporarily unavailable or when themomentary real-time event load exceeds the channel capacity.3.9.2 disseminator log: A log that temporarily stores event reports to be forwarded bydisseminator queue objects when the disse
47、minator queue objects cannot forward event reports inreal-time.3.9.3 disseminator queue: A managed object that specifies a list of stored event reports and thatis able to forward these stored event reports to a specified destination.4 AbbreviationsThis Recommendation uses the following abbreviations
48、:ASN.1 Abstract Syntax Notation OneCMIS Common management information serviceCMISE Common management information service elementEFD Event forwarding discriminatorERF Event reporting functionId IdentifierMAPDU Management application protocol data unitPDU Protocol data unitSMAE Systems management appl
49、ication entitySMFU Systems management functional unitSMI Structure of management information5 ConventionsThis Recommendation defines services for the event report management function following thedescriptive conventions defined in ITU-T X.210 | ISO/IEC 10731.ITU-T X.754 (02/2000) 56 RequirementsThe requirements to be satisfied are:a) the definition of a flexible event report control service which will allow systems to selectwhich event reports are to be sent to pa
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