@habwe hi, I searched the command "mls ip directed-broadcast exclude-router" , the document said it's used to enable hardware switching of IP-directed broadcasts, in Huawei, you can use command "ip forward-broadcast" , you can refer to http://support.huawei.com/hedex/hdx.do?lib=EDOC110005399931180APD&docid=EDOC1100053999&lang=en&v=02&tocLib=EDOC110005399931180APD&tocV=02&id=ip_forward-broadcast&tocURL=resources%2fdc%2fip%5fforward%2dbroadcast%2ehtml&p=t&fe=1&ui=3&keyword=process&keyword=unit&keyword=d&keyword=main&text=ip%252Bforward-broadcast

@habwe hi there, could you please describe the difference between Cisco and Huawei. in fact, the Cisco document said that In the default mode, IP-directed broadcast packets are not hardware forwarded; they are handled at the
process level by the MSFC2. The MSFC2 decision to forward or not forward the packet is then
dependent on the ip directed-broadcast command configuration.
There is no interaction between the ip directed-broadcast command and the mls ip directed-broadcast
command. The ip directed-broadcast command involves software forwarding and the mls ip
directed-broadcast command involves hardware forwarding.
I'm not sure if this is the difference you talked.