The Port VCD Test mode: startVcdTest=(1) - used for SNMP SET operation to run VCD Test; testIsRunning=(2) - used for SNMP GET operation to show that VCD Test is still not completed; vcdTestCompletedOk=(3)- used for SNMP GET operation to show that VCD Test is already completed with no Error. vcdTestCompletedWithError=(4)- used for SNMP GET operation to show that VCD Test is already completed with some Error. vcdNotTested=(5) - used for SNMP GET operation to show that VCD Test has not yet been executed.