HDREG-MIB2

Description: Manages Sun Microsystems hardware registration and inventory objects for enterprise server platforms.

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HDREG-MIB2 is Sun Microsystems' proprietary hardware registration MIB, used to register and enumerate management modules within Sun's SunNetManager/SunSymon-era enterprise server and network management framework rather than to expose live telemetry itself. Its objects form a registration table (hdregtable/hdregentry) that lists installed management modules by name, label, and root OID, effectively acting as a directory of which vendor sub-agents/modules are present on a Sun management agent. Because it is a meta-registration MIB, its primary monitoring value is discovering which hardware/software management modules are loaded and reachable on the agent rather than reporting temperature, CPU, or disk metrics directly; those come from the modules it registers. It is inherently dependent on the broader Sun enterprise-agent framework (SunSymon/Sun agent architecture) since its entries point at the root OIDs of other, separately-defined Sun MIBs. It was deployed on legacy Sun Microsystems servers and network elements running the Sun enterprise SNMP agent during the SunNetManager/Solstice era. Engineers can download the HDREG-MIB2 file directly to load it into their MIB browser.

An NMS would walk hdregtable/hdregentry to retrieve modname, label, and rootoid for each registered module, then use svflag to determine whether a given module is currently active/supervised. Discovering a new rootoid entry under the sun/agent/sunsymon branch after a firmware or agent upgrade would reveal that a new hardware or software sub-agent module has been installed and registered. Absence of an expected module entry would indicate that a management module failed to load on the agent.

Sun Microsystems host registration and module registry MIB for agent management.