This define the maximum classification level which
is acceptable by this port. This applies to any packet
which is entering or leaving this port. If the
classification level is outside the range defined by
the value of this object and the value of a3IPsecureMinLevel,
the packet is discarded.
If a3IPsecureMinLevel is set to a level greater than the
level identified by this object, the value of this object
will be shifted so it is equal to a3IPsecureMinLevel.