Hi!
MIB file provides a more convenient way to select OIDs when creating DCIs (data collection items). If you right-click the node and go to Data Collection Configuration, you can create the DCIs for the information you need from that device.Each DCI has specific OID that provides collected values. You can also "Walk" a section of MIB tree to see which OIDs are available and what values they provide.
In DCI properties there's Performance Tab page which allows to configure, if that DCI should be shown in the performance tab.
