This refers to the Maintenance Association that refers
to the PBB-TE MA that corresponds to the group's protection
entity. The MA index in this column must hold a value
that is the value of dot1agCfmStackMaIndex column for
some entry in the dot1agCfmStackTable before the RowStatus
for this row can be set to Active. Furthermore, this column
may not be modified when the RowStatus for this row is Active.
to the PBB-TE MA that corresponds to the group's protection
entity. The MA index in this column must hold a value
that is the value of dot1agCfmStackMaIndex column for
some entry in the dot1agCfmStackTable before the RowStatus
for this row can be set to Active. Furthermore, this column
may not be modified when the RowStatus for this row is Active.