MIB: ENTITY-MIB
The textual name of the physical entity.  The value of this
object should be the name of the component as assigned by
the local device and should be suitable for use in commands
entered at the device's `console'.  This might be a text
name (e.g., `console') or a simple component number (e.g.,
port or module number, such as `1'), depending on the
physical component naming syntax of the device.
If there is no local name, or if this object is otherwise
not applicable, then this object contains a zero-length
string.
Note that the value of entPhysicalName for two physical
entities will be the same in the event that the console
interface does not distinguish between them, e.g., slot-1
and the card in slot-1.