A string of octets containing one bit per
protected VLAN from VLAN IDs 1025 to 2048. The
first octet corresponds to VLAN IDs 1025 through
1032, the second octet to VLAN IDs 1033 through
1040, etc. Within each octet, the most significant
bit represents the lowest numbered VLAN ID, and the
least significant bit represents the highest
numbered VLAN ID.