global_nocollect_noDescription is a true/false setting, whereas the others are all interpreted as regular expressions (if not missing or empty). Keep in mind that these are regular expressions, therefore if we wanted to not collect ifType's propVirtual & l2vlan the syntax would look like this:
'global_nocollect_ifType' => 'l2vlan|propVirtual',
Please note that the checkable properties aren't necessarily labelled the same on the Interface Details page (e.g. setting
global_collect_ifDescr compares the
ifDescr value against the given regular expression, but the
ifDescr data is likely labelled "Name" in the GUI).