Hello, friend!
1. Create a VLAN service profile.
huawei(config)#vlan service-profile profile-id 1
huawei(config-vlan-srvprof-1)#user-bridging enable
huawei(config-vlan-srvprof-1)#commit
2. Bind the VLAN service profile to the VLAN that implements Layer 2 interoperation.
huawei(config)#vlan bind service-profile 200 profile-id 1 //Take a port where VLAN service profile 200 is created as an example.
Thanks!