Example for Configuring Interface-based Multicast VLAN Replication

Networking Requirements

In Figure 1, GE0/0/1 on SwitchA is connected to the Router. GE0/0/2 provides services for ISP1, and GE0/0/3 provides services for ISP2. ISP1 and ISP2 use multicast VLAN 2 and VLAN 3 respectively to provide multicast services for users. GE0/0/2 and GE0/0/3 have the same user VLAN (VLAN 10).

To ensure that multicast packets of each ISP are sent only to users of the ISP, interface-based multicast VLAN replication is required. After the configuration is complete, multicast data of an ISP will be sent only to the interface connected to the ISP.

Figure 1 Configuring interface-based multicast VLAN replication

Configuration Roadmap

The configuration roadmap is as follows:

Enable Internet Group Management Protocol (IGMP) snooping in the system view.
Create user VLAN 10.
Create multicast VLANs 2 and 3 and enable IGMP snooping in the multicast VLANs.
Bind user VLAN 10 to multicast VLANs on GE0/0/2 and GE0/0/3 respectively.
Add the network-side interface and user-side interfaces to the VLANs as hybrid interfaces.

Procedure

Create user VLAN 10.

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan batch 10

Create multicast VLANs 2 and 3, and enable the IGMP snooping and IGMP snooping querier functions in the multicast VLANs.

It is recommended that you configure igmp-snooping querier enable in the multicast VLAN view. If the Router is the gateway with IGMP enabled, you do not need to perform this configuration.
```
[SwitchA] igmp-snooping enable
[SwitchA] vlan 2
[SwitchA-vlan2] igmp-snooping enable
[SwitchA-vlan2] igmp-snooping querier enable
[SwitchA-vlan2] quit
[SwitchA] vlan 3
[SwitchA-vlan3] igmp-snooping enable
[SwitchA-vlan3] igmp-snooping querier enable
[SwitchA-vlan3] quit
```

Bind user VLAN 10 to multicast VLANs on GE0/0/2 and GE0/0/3 respectively.

[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] l2-multicast-bind vlan 10 mvlan 2
[SwitchA-GigabitEthernet0/0/2] quit
[SwitchA] interface gigabitethernet 0/0/3
[SwitchA-GigabitEthernet0/0/3] l2-multicast-bind vlan 10 mvlan 3
[SwitchA-GigabitEthernet0/0/3] quit

Add GE0/0/1 to the multicast VLANs. Add GE0/0/2 and GE0/0/3 to the user VLAN.

# Add GE0/0/1 to multicast VLANs 2 and 3 as a trunk interface.

[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type trunk
[SwitchA-GigabitEthernet0/0/1] port trunk allow-pass vlan 2 3 
[SwitchA-GigabitEthernet0/0/1] quit

# Add GE0/0/2 and GE0/0/3 respectively to user VLAN 10 as hybrid interfaces.

[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] port link-type hybrid
[SwitchA-GigabitEthernet0/0/2] port hybrid pvid vlan 10
[SwitchA-GigabitEthernet0/0/2] port hybrid untagged vlan 10 
[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 10
[SwitchA-GigabitEthernet0/0/3] port hybrid untagged vlan 10 
[SwitchA-GigabitEthernet0/0/3] quit

Verify the configuration.

Run the display l2-multicast-bind command on SwitchA to view binding between the user VLAN and multicast VLANs.

[SwitchA] display l2-multicast-bind
 -------------------------------------------------------------------            
 Port                          Startvlan        Endvlan        Mvlan            
 -------------------------------------------------------------------            
 GigabitEthernet0/0/2                 10             --            2            
 GigabitEthernet0/0/3                 10             --            3            
 -------------------------------------------------------------------            
 Total Table(s) : 2

Configuration Files

SwitchA configuration file

#
sysname SwitchA
#
vlan batch 2 to 3 10
#
igmp-snooping enable
#
vlan 2
 igmp-snooping enable
 igmp-snooping querier enable
vlan 3
 igmp-snooping enable
 igmp-snooping querier enable
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 2 to 3
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10
 l2-multicast-bind vlan 10 mvlan 2
#
interface GigabitEthernet0/0/3
 port link-type hybrid
 port hybrid pvid vlan 10
 port hybrid untagged vlan 10
 l2-multicast-bind vlan 10 mvlan 3
#
return