Example for Adding an Interface to a Multicast Group Statically

This section provides an example for adding an interface to a multicast group statically.

Networking Requirements

On the network shown in Figure 1, GE 0/1/1 on DeviceA is connected to a router, and GE 0/1/2 on the DeviceA is connected to a switch. It is required that all the hosts in VLAN 3 should receive the multicast packets from the multicast group 225.0.0.1.

Figure 1 Networking diagram of adding an interface to a multicast group statically

Interfaces 1 and 2 in this example represent GE 0/1/1 and GE 0/1/2, respectively.

Configuration Roadmap

The configuration roadmap is as follows:

Create a VLAN.
Add interfaces to the VLAN.
Add an interface to a multicast group statically.

Data Preparation

To complete the configuration, you need the following data:

Multicast group address: 225.0.0.1
ID of the VLAN to which a switch and connected host devices belong: 3
GE 0/1/1 as the interface to a multicast group statically

Procedure

Create a VLAN.

# Create VLAN 3 on DeviceA.

<DeviceA> system-view
[~DeviceA] igmp-snooping enable
[*DeviceA] vlan 3
[*DeviceA-vlan3] igmp-snooping enable
[*DeviceA-vlan3] commit
[~DeviceA-vlan3] quit

Add interfaces to the VLAN.

# Configure GE 0/1/2 on Device A to allow data frames from VLAN 3 to pass through.

[~DeviceA] interface gigabitethernet 0/1/2
[~DeviceA-GigabitEthernet0/1/2] portswitch
[*DeviceA-GigabitEthernet0/1/2] port trunk allow-pass vlan 3
[*DeviceA-GigabitEthernet0/1/2] commit
[~DeviceA-GigabitEthernet0/1/2] quit

# Configure GE 0/1/1 on Device A to allow data frames from VLAN 3 to pass through.

[~DeviceA] interface gigabitethernet 0/1/1
[~DeviceA-GigabitEthernet0/1/1] portswitch
[*DeviceA-GigabitEthernet0/1/1] port trunk allow-pass vlan 3
[*DeviceA-GigabitEthernet0/1/1] commit
[~DeviceA-GigabitEthernet0/1/1] quit

Create GE 0/1/2 on DeviceA and add it to the multicast group 225.0.0.1 statically.

[~DeviceA] interface gigabitethernet 0/1/2
[~DeviceA-GigabitEthernet0/1/2] l2-multicast static-group group-address 225.0.0.1 vlan 3
[*DeviceA-GigabitEthernet0/1/2] commit
[~DeviceA-GigabitEthernet0/1/2] quit

Verify the configuration.

# After completing the configurations, run the display igmp-snooping port-info command on DeviceA to view information about member ports of the multicast group 225.0.0.1.

[~DeviceA] display igmp-snooping port-info
 -----------------------------------------------------------------------------------
  Flag: S:Static     D:Dynamic     M:Ssm-mapping
        A:Active     P:Protocol    F:Fast-channel                                
                    (Source, Group)  Port                                      Flag
 -----------------------------------------------------------------------------------
 VLAN 3, 1 Entry(s)
                      (*, 225.0.0.1)                                            P--
                                      GE0/1/2                                   S--
                                                        1 port(s) include
 -----------------------------------------------------------------------------------

Configuration Files

DeviceA configuration file

#
sysname DeviceA
#
vlan batch 3
#
igmp-snooping enable
#
#
vlan 3
igmp-snooping enable
#
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port trunk allow-pass vlan 3
#
interface  GigabitEthernet0/1/2
 undo shutdown
 portswitch
 port trunk allow-pass vlan 3
 l2-multicast static-group group-address 225.0.0.1 vlan 3
#
return