Huawei defines HUAWEI-L3VLAN-MIB. This MIB is used to set the information such as the basic information of the VLAN and the relationship between the VLAN and subif.
The OID of root objects is:
iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).huawei(2011).huaweiMgmt(5).hwDatacomm(25).hwL3Vlan(100)