SNMP Reference Guide

System State Group 49
5
System State Group
The Management Information Base (MIB) variables presented in this section
enable you to track various attributes that describe the state of the critical
components supported by your system. Components monitored under the
System State Group include power supplies, AC power cords, AC power
switches, and cooling devices, as well as temperature, fan, amperage,
and voltage probes.
System State Group Table
The System State Group defines objects in the System State MIB table.
System State Table
The systemStateGlobalSystemStatus variable provides overall system health
status and includes rolled-up (that is, worst) status for Instrumentation and
Storage. This variable monitors the overall system health status. It reflects
changes to systemStateChassisStatus variable, which represents
Instrumentation health status and agentGlobalSystemStatus (dcstorag.mib),
which represents Storage health status.
The systemStateChassisStatus variable provides the rolled-up health status
for the subsystems associated with the chassis that is represented by the row
in the systemStateTable. Changes to the variables in "List 1" on page 50, each
of which indicates the rolled-up health status of all the components of the
corresponding subsystem, are reflected in systemStateChassisStatus variable.
For example, systemStatePowerSupplyStatusCombined provides the rolled-
up status of all power supplies for the chassis.
The variables in "List 2" on page 50 provide the health status of each
component of the corresponding subsystem. Each octet of the value
represents a component. If a power supply fails, the corresponding entry in
systemStatePowerSupplyStatusDetails,
systemStatePowerSupplyStatusCombined, systemStateChassisStatus, and
systemStateGlobalSystemStatus transitions to critical.
book.book Page 49 Tuesday, February 28, 2012 2:19 PM