信息技术 开放系统互连 系统管理:时间管理功能

[中文适用范围]： 此建议|国际标准定义了系统管理功能，可由集中式或分散式管理环境中的应用程序进程使用，以实现系统管理目的的交互，如 ITU-T Rec. 所定义。 X.200 IISO/IEC 7498-1。 此建议|国际标准定义了一个由通用定义、服务和功能单元组成的功能。 该功能定位于ITU-T Rec.X.200的应用层| ISO/IEC 7498-1 是根据 ISO 9545 提供的模型定义的。 系统管理功能的作用由 CCITT Rec. 描述。 X.701 | ISO /IEC 10040。 本建议书|国际标准： ——定义时钟管理服务，供 OSI 管理使用并可供 OSI 应用程序和其他应用程序使用； ——确定本建议书的用户要求|国际标准; ——建立时间管理功能模型，解决涉及系统之间通信的通用时间服务的组件，该模型将由该功能提供的服务和通用定义与用户需求联系起来； ——定义根据 CCITT Rec. 记录的通用对象类、属性类型、操作类型、通知类型和参数。 X.722 | ISO/IEC 10165-4； ——规定对使用这些通用定义的其他标准的合规性要求； ——定义该功能提供的服务； ——规定提供服务所需的管理协议； ——定义这些服务与系统管理操作和通知之间的关系； ——规定识别和协商协议中功能单元所需的抽象语法；定义与其他系统管理功能的关系； ——规定了实施本建议书所要满足的一致性要求|国际标准; ——识别时间同步协议。 此建议|国际标准不： ——解决在本地系统内提供时间信息的问题； ——定义旨在提供时间管理功能的任何实现的性质； ——规定时间管理功能的用户完成管理的方式； ——定义导致使用时间管理功能的任何交互的性质； ——规定管理关联的建立、使用以及正常或非正常释放所必需的服务。 [外文原描述]： This Recommendation | International Standard defines a Systems Management Function that may be used by an application process in a centralized or decentralized management environment to interact for the purpose of systems management, as defined by ITU-T Rec. X.200 | ISO/IEC 7498-1. This Recommendation | International Standard defines a function which consists of generic definitions, services, and functional units. This function is positioned in the application layer of ITU-T Rec.X.200 | ISO/IEC 7498-1 and is defined according to the model provided by ISO 9545.The role of systems management functions is described by CCITT Rec. X.701 | ISO /IEC 10040. This Recommendation | International Standard: – defines a service for the management of clocks for use by OSI management and available for use by OSIapplications and others;– establishes user requirements for this Recommendation | International Standard;– establishes a time management function model, addressing the components of a generic time service involving communication between systems, that relates the service and generic definitions provided by this function to the user requirements;– defines generic object classes, attribute types, operation types, notification types, and parameters documented in accordance with CCITT Rec. X.722 | ISO/IEC 10165-4;– specifies compliance requirements placed on other standards that make use of these generic definitions;– defines the services provided by the function;– specifies the management protocol that is necessary in order to provide the services;– defines the relationship between these services and systems management operations and notifications;– specifies the abstract syntax necessary to identify and negotiate the function unit in the protocol;– defines relationships with other systems management functions;– specifies conformance requirements to be met by implementation of this Recommendation | International Standard;– identifies time synchronization protocols. This Recommendation | International Standard does not: – address the provision of time information within a local system;– define the nature of any implementation intended to provide the Time Management Function;– specify the manner in which management is accomplished by the user of the Time Management Function;– define the nature of any interaction which results in the use of the Time Management Function;– specify the services necessary for the establishment, use, and normal or abnormal release of a management association.