This object indicates the VCT action of the port, the value 1(standard mode) and value 2(shutdown mode) is permitted when SET this entry though you can GET 1(processing) and 0(succeed); The specified port will be shutdown when one sets 1 to this entry by standard mode,and then it will return to no shutdown after operate the virtual-cable-test. You can get the status of VCT from the entry vctLastStatus. The specified port will be shutdown when one sets 2 to this entry by shutdown mode,and then it will return to operate the virtual-cable-test. You can get the status of VCT from the entry vctLastStatus.