User manual

Sensorsoft Alert User Manual
Sensorsoft Alert Indexed MIB Usage
Readings from device variables are accessed through the ssVarReading MIB object. Although your Alert
appliance could be monitoring multiple devices, and each device could contain multiple variables, the
Sensorsoft SNMP Agent allows access to one variable on one device at a time. The variable that is
currently being accessed is controlled by the variable index stored in ssVarIndex, and the device index
stored in ssDeviceIndex. Setting ssVarIndex or ssDeviceIndex to a new value changes the variable that is
being accessed, so that all subsequent GET and SET operations operate on that variable. For example, to
get the reading of variable 2 on the device connected to port 4, do the following:
1. Set ssDeviceIndex to 4
2. Set ssVarIndex to 2
3. Get ssVarReading
ssVarReading is an example of a MIB object that is indexed by both ssDeviceIndex and ssVarIndex.
Other such objects are ssApplianceOfMeasure, ssScalarCriticaHighLimit and
ssEmailOnScalarCriticalHighEnable.
Some Alert MIB objects are indexed by ssDeviceIndex only, such as ssDeviceLocation, and
ssDeviceModel. The value of ssVarIndex has no effect on these objects.
Setting Breach Limits on Scalar Variables
The reading of the currently indexed scalar variable on the currently indexed device is given by the
ssScalarData MIB object. The appliance of measure of this scalar data is given by the
ssApplianceOfMeasure MIB object. You may also obtain both the reading and the appliance of measure
together in the ssVarReading MIB object.
Breach limits can be defined for each scalar variable so that when the variable’s reading exceeds a
particular breach limit, the variable will enter an alert state. Four different breach limits can be set through
the following MIB objects:
ssScalarCriticalLowLimit
ssScalarWarningLowLimit
ssScalarWarningHighLimit
ssScalarCriticalHighLimit
These breach limits in turn define the conditions in which a scalar variable will enter the following alert
states.
Breach Of Critical Low Limit
Breach of Warning Low Limit
Return To Normal
Breach of Warning High Limit
Breach of Critical High Limit
Different alert actions can be taken in each alert state. The following alert actions are supported:
Email
SMS-Paging (SSA7004 and SSA7008 only)
SNMP Traps
Command line execution
Any combination of these alert actions can be taken when a scalar variable enters a particular alert state.
Please note that SMS-Paging cannot be configured through SNMP. Please use the Alert web interface to
configure any SMS-Paging alerts.
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