This object specifies the list of VLANs configured to be
blocked at the alternate port for VLANs with values of 0 through
1023. If the bit is set to '1', then the VLAN is marked for
blocking.
This value is only effective on the device acting as the REP
primary edge. In addition, this value is effective only if
'crepLoadBalanceBlockPortType' is not 'none'.