Status for scan operation issued by the Master device to find
all the on-line EP devices. That is, force to refresh all EP status.
The SNMP manager can set the eocBrMasterScanEPAction value to activate(1)
to start the scan procedure. The status (eocBrMasterScanEPStatus)
will go from inProgress(1) status back to the initial
normalOrComplete(0) status.