A string of octets containing one bit per VLAN. The first octet corresponds to VLANs with vlanIndex values of 0 through 7; the second octet to VLANs 8 through 15; etc., The most significant bit of each octet corresponds to the lowest value vlanIndex in that octet. For each VLAN, if it is mapped to this MSTP instance, then the bit corresponding to that VLAN is set to '1'. To create a row, write any of mstInstanceEditVlansMap, mstInstanceEditVlansMap2k, mstInstanceEditVlansMap3k or mstInstanceEditVlansMap4k, to a non-empty list. To destroy a row, write all of these four variables to an empty list.