A string of octets containing one bit per VLAN for
VLANS with VlanIndex values of 1024 through 2047. The
first octet corresponds to VLANs with VlanIndex values
of 1024 through 1031; the second octet to VLANs 1032
through 1039; 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 MST instance,
then the bit corresponding to that VLAN is set to '1'.
This object is deprecated and replaced by
stpxSMSTInstanceVlansMapped1k2k.