Hi,
kindly finds the below response :
The management interface MEth0/0/0 is a special Ethernet interface used to log in to the device to perform configuration and management. The MEth management interfaces are not responsible for service transmission.
For your reference :
https://support.huawei.com/enterprise/en/doc/EDOC1000178172/a3112b12/configuring-meth-management-interface-attributes