This refers to the Maintenance Domain that qualifies the
WorkingMA and ProtectionMA columns of this table. The MD
index in this column must hold a value that matches the
in the dot1agCfmStackMdIndex in the dot1agCfmStackTable
for the corresponding WorkingMA and ProtectionMA columns
of this table. This correspondence must hold for the RowStatus
of this row to be set to Active. Furthermore, this column may
not be modified while the RowStatus for this row is Active
WorkingMA and ProtectionMA columns of this table. The MD
index in this column must hold a value that matches the
in the dot1agCfmStackMdIndex in the dot1agCfmStackTable
for the corresponding WorkingMA and ProtectionMA columns
of this table. This correspondence must hold for the RowStatus
of this row to be set to Active. Furthermore, this column may
not be modified while the RowStatus for this row is Active