Example for Configuring 1-to-N Multicast Replication Based on User VLANs

Networking Requirements

In Figure 1, service VLAN 10 is used to transmit multicast data between RouterA and SwitchA. HostA, HostB, and HostC belong to VLAN 100, VLAN 200, and VLAN 300, respectively. All of them want to receive multicast data from Source.

You can configure 1-to-N multicast replication based on user VLANs, so that RouterA only needs to copy and send multicast data to VLAN 10 in response to the same multicast data request from different user hosts. This reduces bandwidth consumption between RouterA and SwitchA.

Figure 1 Configuring 1-to-N multicast replication based on user VLANs

Configuration Roadmap

The configuration roadmap is as follows:

Enable Internet Group Management Protocol (IGMP) snooping in the system view.
Create user VLANs and enable IGMP snooping in the user VLANs.
Create a multicast VLAN and enable IGMP snooping in the multicast VLAN.
Bind the user VLANs to the multicast VLAN.
Add the network-side interface and user-side interfaces to the VLANs as hybrid interfaces.

Procedure

Enable IGMP snooping in the system view.

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] igmp-snooping enable

Create user VLANs and enable IGMP snooping in the user VLANs.

[SwitchA] vlan 100
[SwitchA-vlan100] igmp-snooping enable
[SwitchA-vlan100] quit
[SwitchA] vlan 200
[SwitchA-vlan200] igmp-snooping enable
[SwitchA-vlan200] quit
[SwitchA] vlan 300
[SwitchA-vlan300] igmp-snooping enable
[SwitchA-vlan300] quit

Create a multicast VLAN and enable the IGMP snooping and IGMP snooping querier functions in the multicast VLAN.

It is recommended that you configure igmp-snooping querier enable in the multicast VLAN view. If RouterA is the gateway with IGMP enabled, you do not need to perform this configuration.
```
[SwitchA] vlan 10
[SwitchA-vlan10] igmp-snooping enable
[SwitchA-vlan10] igmp-snooping querier enable
[SwitchA-vlan10] multicast-vlan enable
```

Bind user VLANs 100, 200, and 300 to multicast VLAN 10.

[SwitchA-vlan10] multicast-vlan user-vlan 100 200 300
[SwitchA-vlan10] quit

Add interfaces to the VLANs as hybrid interfaces.

# Add GE0/0/1 to multicast VLAN 10.

[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type hybrid
[SwitchA-GigabitEthernet0/0/1] port hybrid pvid vlan 10
[SwitchA-GigabitEthernet0/0/1] port hybrid untagged vlan 10 
[SwitchA-GigabitEthernet0/0/1] quit

# Add GE0/0/2, GE0/0/3, and GE0/0/4 to user VLANs 100, 200, and 300 respectively.

[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] port link-type hybrid
[SwitchA-GigabitEthernet0/0/2] port hybrid pvid vlan 100
[SwitchA-GigabitEthernet0/0/2] port hybrid untagged vlan 100
[SwitchA-GigabitEthernet0/0/2] quit
[SwitchA] interface gigabitethernet 0/0/3
[SwitchA-GigabitEthernet0/0/3] port link-type hybrid
[SwitchA-GigabitEthernet0/0/3] port hybrid pvid vlan 200
[SwitchA-GigabitEthernet0/0/3] port hybrid untagged vlan 200
[SwitchA-GigabitEthernet0/0/3] quit
[SwitchA] interface gigabitethernet 0/0/4
[SwitchA-GigabitEthernet0/0/4] port link-type hybrid
[SwitchA-GigabitEthernet0/0/4] port hybrid pvid vlan 300
[SwitchA-GigabitEthernet0/0/4] port hybrid untagged vlan 300
[SwitchA-GigabitEthernet0/0/4] quit

Verify the configuration. View information about the multicast VLAN and user VLANs on SwitchA.

[SwitchA] display multicast-vlan vlan
Total multicast vlan   1                                                       
 multicast-vlan     user-vlan number     snooping-state                         
 ----------------------------------------------------------------               
 10                 3                    IGMP Enable/MLD Disable

[SwitchA] display user-vlan vlan                                       
 Total user vlan   3                                                            
 user-vlan  snooping-state            multicast-vlan  snooping-state            
 -----------------------------------------------------------------------------  
 100        IGMP Enable/MLD Disable  10               IGMP Enable/MLD Disable
 200        IGMP Enable/MLD Disable  10               IGMP Enable/MLD Disable
 300        IGMP Enable/MLD Disable  10               IGMP Enable/MLD Disable

Configuration Files

SwitchA configuration file

#
sysname SwitchA
#
vlan batch 10 100 200 300
#
igmp-snooping enable
#
vlan 10
 igmp-snooping enable
 multicast-vlan enable
 igmp-snooping querier enable
 multicast-vlan user-vlan 100 200 300 
vlan 100
 igmp-snooping enable
vlan 200
 igmp-snooping enable
vlan 300
 igmp-snooping enable
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
interface GigabitEthernet0/0/3
 port link-type hybrid
 port hybrid pvid vlan 200
 port hybrid untagged vlan 200
#
interface GigabitEthernet0/0/4
 port link-type hybrid
 port hybrid pvid vlan 300
 port hybrid untagged vlan 300
#
return