This index uses an enumerated value that is different for each value of
juniSystemUtilizationResourceType. The following table shows the
mapping of Type to SubType enumeration and the corresponding units of
measure used for each type of resource.
Type SubType Units
-----------+-------------------------------+----------------------------
interface Juniper-UNI-IF-MIB.juniIfType number of interfaces
memory SNMPv2-TC.StorageType HOST-RESOURCES-MIB.KBytes