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Appendix A WBEM Support Under Windows
NMS SNMP Reference Manual
Introduction
The Distributed Management Task Force (DMTF) has launched the Web-Based
Enterprise Management (WBEM) initiative that extends the Common Information
Model (CIM) to represent management objects. This Common Information Model
is an extensible data model for logically organizing management objects in a
consistent, unified manner in a managed environment.WBEM is a technology that
establishes management infrastructure standards and provides a standardized way
to access information from various hardware and software management systems
in an enterprise environment. Using WBEM standards, developers can create
tools and technologies that reduce the complexity and costs of enterprise
management.WBEM provides a point of integration through which data from
management sources can be accessed, and it complements and extends existing
management protocols and instrumentation such as Simple Network Management
Protocol (SNMP), Desktop Management Interface (DMI), and Common
Management Information Protocol (CMIP).
The Microsoft Windows Management Instrumentation (WMI) technology is the
Microsoft implementation of the WBEM initiative. The Windows Management
Instrumentation (WMI) technology is a management infrastructure that supports
the syntax of CIM, the Managed Object Format (MOF), and a common
programming interface. The MOF syntax defines the structure and contents of the
CIM schema in human and machine-readable form. Windows Management
Instrumentation offers a powerful set of services, including query-based
information retrieval and event notification. These services and the management
data are accessed through a Component Object Model (COM) programming
interface. The WMI scripting interface also provides scripting support.
When running Windows NT 4.0 or Windows 2000 installed with SMNP and WMI
services, SNMP data can be accessed as WBEM data through WMI mechanisms.
The WMI SNMP provider (optionally installed) performs the link between SNMP
and WMI. The Microsoft SNMP provider comes with additional MIB and MOF
files reflecting the standard RFC. This appendix describes how to install and test a
configuration allowing interaction between NMS SNMP agents and a
WBEM/WMI script or program.
Some demonstration programs are included to show how you can use WBEM to
retrieve information contained in the NMS subagents. These programs are for
Windows only. Then can be found in \nms\ctaccess\demos\snmp\wbem.
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