This object contains the first 2048 bits of the 4096-bit vector,
indicating which CVLAN IDs are assigned to this service instance. The
lowest order bit of the first octet corresponds to CVLAN 1, while the
highest order bit of the last octet corresponds to CVLAN 2048. A bit
that is on (equal to 1) indicates that the corresponding CVLAN ID is
assigned to this service instance.