The operational status of the port with respect to ULD.
The status is disabled(2) only if the disablePort action
is configured and a unidirectional link is detected.
Otherswise, the status is operational(1). Setting the
status to operational(1) when the status is disabled(2)
will clear a unidirectional link error. Any other write
of this object will have no effect.
This value SHOULD NOT be maintained across reboot.