HP Systems Insight Manager - Manual (Page 218)

H System Type Manager rules
System Type Manager enables you to extend HP SIM's SNMP-based discovery so that it is able
to identify new types of systems. You do this by creating a System Type Manager rule that maps
a System Object ID (OID), and optionally an additional
MIB variable, to the desired type.
Manufacturers assign unique System OIDs to their SNMP-instrumented products.
Systems supply information about themselves using variables described in files called MIBs. These
values are enumerated using an industry-standard structure. MIBs are provided by vendors for their
systems and must be registered with HP SIM to be accessible and usable from System Type Manager.
HP preregisters all HP MIBs and many third-party MIBs. You can register the remaining MIBs using
the MIB compiler, if you have the related systems on your network. If you examine a MIB, you will
find modules, or groups of variables. Some variables have multiple values. Each of these values
has an OID as well. You can use these OIDs to determine which system you have and its current
behavior by querying these OIDs. For a list of default MIBs supplied by HP SIM, see
“Out-of-the-box
MIB support in HP SIM” (page 229) .
You might need to enter a MIB variable OID if you have systems that return the same System OID
that you would like to classify as different products based on an SNMP variable that returns a
different value for each class. For example, if you have Windows NT servers from different vendors
that return the same Windows NT System OID, you can specify rules using the Windows NT OID
as the OID and a vendor-specific MIB variable and value combination to create separate rules for
each vendor.
Adding new SNMP rules
You can create a new SNMP-based rule using the command line utility (mxstm) or by selecting
Options
→Manage System Types from the HP SIM user interface. Within the SNMP framework,
manageable network systems (routers, bridges, servers, and so on) contain a software component
called a management agent. The agent monitors the various subsystems of the network element
and stores this information in a MIB. The agents enable the system to generate traps, which can
be configured to be sent to a trap destination server that is running HP SIM.
218 System Type Manager rules