3-1 
3  Common Multicast Configuration  
Common Multicast Configuration 
Configuring a Multicast MAC Address Entry 
In Layer 2 multicast, the system can add multicast forwarding entries dynamically through a Layer 2 
multicast protocol. Alternatively, you can statically bind a port to a multicast MAC address entry by 
configuring a multicast MAC address entry manually.  
Generally, when receiving a multicast packet for a multicast group not yet registered on the switch, the 
switch will flood the packet within the VLAN to which the port belongs. You can configure a static 
multicast MAC address entry to avoid this. 
Table 3-1 Configure a multicast MAC address entry in system view 
Operation  Command  Remarks 
Enter system view 
system-view 
— 
Create a multicast MAC 
address entry 
mac-address multicast 
mac-address interface 
interface-list vlan vlan-id 
Required 
The mac-address argument 
must be a multicast MAC 
address. 
 
Table 3-2 Configure a multicast MAC address entry in Ethernet port view 
Operation  Command  Remarks 
Enter system view  system-view  — 
Enter Ethernet port view 
interface interface-type 
interface-number 
— 
Create a multicast MAC 
address entry. 
mac-address multicast 
mac-address vlan vlan-id 
Required 
The mac-address argument 
must be a multicast MAC 
address.