The operational status of this range table entry. It will be `disabled' if this entry's row status is not active. It will be `workgroupInvalid' if either there is no workgroup or if the operational status for the workgroup in the definition table associated with this address range is not ok. It will be `interfaceInvalid' if this interface is not in the workgroup interface table or if operational status of the interface entry is not ok. It will be `physAddrRequired' if the security level of the associated workgroup is high and no physical address has been specified for this entry.