Data labels

Data labels are a mechanism that allows grouping of multiple poll definitions that collect the same poll data within a single report. Data labels are only available in basic threshold poll definitions. By default the data label takes the same name as the poll definition but you can change this to meet your data labeling needs.

The following examples describe the use of data labels to enable a single report to retrieve data from multiple poll definitions. A number of Network Manager summary reports use data labels by default.

Multiple vendor-specific poll definitions

A summary report that presents data on the percentage usage of memory across different vendor devices must retrieve poll data from multiple vendor-specific poll definitions. By defining a common memoryPercentageUsage data label within each of the vendor-specific poll definitions, the data retrieved by each of these different poll definitions can be grouped within one report.

Poll definitions with different thresholds and event severities

A summary report that presents data on inbound discards on device interfaces retrieves data from multiple poll definitions. Each of these poll definitions collects the same poll data but applies different thresholds and event severities to this data. By defining a common ifInDiscards data label within each of the different poll definitions, the data retrieved by each of these poll definitions can be grouped within a single report.

Default report to data label mapping

The following table lists the summary reports and the data labels used by default by these summary reports.

Table 1. Default report to data label mapping
Report	Data label
Router Health Summary	memoryPercentageUsage
Router Health Summary	cpuBusy
Device Availability Summary	systemUptime