The repeater port within the group to which this
switch link is attached. For internal switches, this
object may not be modified by a network management
operation. For external switches, an instance of
this object will be created with the value of zero.
It must be modified to a non-zero value corresponding
to a known repeater port index before the instance
of the hpicfGRpSwitchStatus object associated with
this switch can be set to 'active'.
An instance of this object may not be modified if
the instance of the hpicfGRpSwitchStatus object
associated with this switch would be equal to
'active' both before and after the modification
attempt.