When creating a tabular style chart it may be useful to display Minimum and Maximum values for metrics being reviewed. Not all factory metrics support the gathering and storage of Minimum and Maximum data points for reporting needs by default.
A tabular Top style report can show Minimum and Maximum values for selected metrics that support that data.
Some metrics do not gather this data by default. To enable this for selected metrics we need to add support for these values, changing it from False to True.
How can we validate if a metric provides this data or not? To determine if a lack of support for Min/Max values is the reason that option for select metrics can't be found determine the Metric Family in use. Go to the Metric Family entry in the Data Aggregator Views. In the Metrics tab, review the value in the Min and Max columns for the metrics involved. False means it is not gathering this data and storing it. True means it is gathered and stored for reporting purposes.
This example shows how to add support for the Bits In and Bits Out metrics from the Alternate Interface Metric Family (MF).
Step One: Find the internal name for the MF involved to use in REST URLs.
Step Two: Display the default MF extension XML code that will be edited
This is the default code used. If it a reset back to default is ever required, the same operation to edit the extension can be used to reset it to default. Save this code for later reference if ever needed.
Step Three: Edit the XML for update to the MF extension, overriding the default behavior.
This is the full set of XML code to be used in a REST API PUT statement. Note that we only include the changes we need to make, to 'extend' the certification and override the default behavior.