When GDMO was first developed it was specified to be
independent of the underlying communications services and of the
applications that it supported. Of course, since CMIP
and GDMO were developed at the same time, by the same international bodies there
are common underlying assumptions. GDMO has specific identified mappings
to CMIS.
So it was no surprise that as TMN
which was developed by the same standards body, the ITU-T,
it also was based the concepts in GDMO and CMIP.
While groups in the ITU-T
and ISO developed the
GDMO language and the CMIP protocol specifications, other groups in these
organisations specified other basic services
and also support services. The ITU-T
developed specific TMN services. Several
organisation including the ITU-T, ANSI, ETSI, the NMF, the IEEE and other
groups developed management information models using GDMO and TMN concepts
and services.
Three types of services can be identified:
- Basic Services
- these are the basic infrastructure such as event reporting,
object creation, naming, etc.;
- Support Service
- these are the services that are built on the basic services
and provide support services that can be used by many types of
management application (i.e. they are independent of the
application and can be re-used);
- Application Services
- these are the services that are application specific and are
built on either the basic services and/or support services.
Basic and support services are all specified in general specifications
defined in the X.700 series of Recommendations. The application services are
specified in a range of recommendations and standards published by a range
of organisations and standards bodies.
