The multicast-domain share-group binding command specifies the Share-MDT group and binds the Multicast Tunnel Interface (MTI) to a VPN instance.
The undo multicast-domain share-group command restores the default configuration.
By default, the group address of Share-MDT is not specified.
multicast-domain share-group group-address binding mtunnel number
undo multicast-domain share-group
| Parameter | Description | Value |
|---|---|---|
| group-address | Specifies the multicast group address. NOTE:
Do not enter an IP address in the SSM address range (232.*.*.*); otherwise, the multicast VPN cannot be established. |
The value is in the dotted decimal notation. The address ranges from 224.0.1.0 to 239.255.255.255. |
| mtunnel number | Specifies the MTI number. | The value is an integer that ranges from 0 to 1023. |
Usage Scenario
When you run the multicast-domain share-group binding command, the device automatically creates the MTI and establishes a Share-MDT with the group-address value as the multicast group address for forwarding VPN multicast packets.
Prerequisites
The multicast routing function has been enabled using the multicast routing-enable command in the VPN instance.
Follow-up Procedure
Manually configure an IP address for the MTI in the MTI view or run the multicast-domain source-interface command in the VPN IPv4 address family view to configure the MTI to automatically obtain an IP address.
Precautions
You cannot configure the same Share-Group address for different VPN instances on a PE. The Share-Group address cannot be the same as the Switch-Group address. The number value must be set different from the MTI number.
You cannot repeatedly run the multicast-domain share-group binding command in the same VPN instance view. You can configure a new Share-MDT group address and MTI only after deleting the existing ones.
After the undo multicast-domain share-group command is executed, configurations about the MTI and Switch-MDT are deleted.
Some multicast protocol packets (such as Register and Graft packets) are sent in unicast mode. These packets are transmitted over unicast VPN tunnels but not multicast VPN tunnels (Mtunnels) on the public network.
# Specify the Share-Group of VPN instance mytest as 224.1.1.1 and bind MTI0.
<HUAWEI> system-view [HUAWEI] ip vpn-instance mytest [HUAWEI-vpn-instance-mytest] route-distinguisher 11:11 [HUAWEI-vpn-instance-mytest-af-ipv4] multicast routing-enable [HUAWEI-vpn-instance-mytest-af-ipv4] multicast-domain share-group 224.1.1.1 binding mtunnel 0