ITU-T - International Telecommunication Union/ITU Telcommunication Sector
适用范围
"The TMN architecture defined in ITU-T M.3010 introduces concepts from distributed processing and includes the use of multiple management protocols. The initial TMN interface specifications for intra- and inter-TMN interfaces were developed using the Guidelines for the Definition of Managed objects (GDMO) notation from OSI Systems Management with Common Management Information Protocol (CMIP) as the protocol. The inter-TMN interface (X) included both CMIP and CORBA GIOP/IIOP as possible choices at the application layer. CORBA@ a distributed processing technology@ is being considered for use in the TMN communication architecture primarily due to its acceptance by the Information Technology industry. This acceptance is expected to enhance the availability of CORBA-based interfaces due to better development tools and wide-spread expertise in developing CORBA-based interfaces. This technology@ developed by the Object Management Group (OMG)@ is also being considered by multiple industries. Specifications using this technology provide support for standard application programming interfaces (APIs) and language bindings to programming languages@ and they also facilitate software portability. The interoperability solutions offered by the object request broker combined with the Inter-ORB protocol address interoperability between client and server. While CMIP and information models provide solutions for interoperability between manager and agent systems@ CORBA defines inter-object interactions where the objects may be distributed. Purpose Several groups are developing network management specifications that use CORBA modelling techniques with IDL as the notation along with CORBA services. The scope of this Recommendation is to define guidelines suitable for use in the specification of interoperable CORBA-based network management interfaces. The demands placed on ""X"" interfaces are different from those used ""inside"" an administration@ ""Q"" interfaces. The scope of this Recommendation covers all interfaces in the TMN where CORBA may be used. It is expected that not all capabilities and models defined here are required in all TMN interfaces. This implies that the framework can be used for interfaces between management systems at all levels of abstractions (inter and intra-administration) as well as between management systems and network elements. ITU-T Q.816 [1] defines a set of services that are required for CORBA-based TMN interfaces. This Recommendation defines guidelines for specifying information models written in CORBA IDL to which the services are applicable. It also provides rules for translating existing GDMO models to IDL. Finally@ it defines some base IDL code for use by all CORBA-based TMN information models. The combination of this Recommendation and ITU-T Q.816 form a framework for defining and implementing CORBA-based TMN interfaces. Use of a common framework on telecommunications management interfaces has several advantages. Some examples are: facilitating reuse of models that are developed to meet the generic requirements of telecommunications; profiling CORBA services for use by the telecommunications industry; easing the definition of new services for TMN; reusing the semantics of the existing rich set of models; and harmonizing the modelling approach across groups using a single source similar to ITU-T X.720@ X.721 and X.722 for CMIP. Reusing a common approach to modelling resources and reusing a generic information model for a variety of network technologies and network management applications will speed the introduction of new network services while keeping network management system development costs down. The telecommunications industry has invested a great deal of time and energy in the development of information models for the CMIP network management protocol. A primary goal of the TMN CORBA framework is the reuse of these information models by enabling their translation to CORBA Interface Definition Language (IDL) with little change in semantics. As a result@ initial IDL information models are expected to be derived from CMIP models."