HP Systems Insight Manager - Manual (Page 188)

G System Type Manager rules
System Type Manager enables you to extend Systems Insight Manager'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 Systems Insight Manager 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
Systems Insight Manager, see
“Out-of-the-box MIB support in Systems Insight Manager” (page 199) .
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 Systems Insight Manager 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 Systems Insight Manager.
188 System Type Manager rules