Hello friend,
You can use Multicast emulation function:
In multicast emulation, an access device remotely emulates an end user going online. Engineers query the real-time traffic of the multicast program to determine whether the multicast function is running properly.
you can configuration refer to the prodoct document below:
https://support.huawei.com/hedex/hdx.do?docid=EDOC1000171625&id=feature_3737_2&lang=en any problem can ask me, thanks.