The MIB (management information base)
SNMP specifies a scheme by which all of the objects and instances of those objects
present within a system can be uniquely identified and specified. These items are called
object identifiers, or OIDs. OIDs are specified as an ordered sequence of non-negative
integers written from left-to-right and separated by a period (i.e., a dot).
This is sometimes called dot notation. For example, the OID “2.1.0” represents a unique OID within
some agent’s MIB.