Docs

Transit Router

Multicast

Managing a multicast source

Add a multicast source

tip

A maximum of 10 network interfaces can be added in batch as multicast sources per request.

Click the name of the target Transit Router (TR) instance.

In the zone below Basic information, select the Multicast domain tab.

Click the name of the target multicast domain.

In the zone below Basic information, select the Multicast group tab.

Click Add multicast source and configure the multicast source based on the table below

Parameter	Description	Example
Basic information
Transit Router	Defaults to the selected TR instance, requiring no manual configuration.	tr01
Multicast domain	Defaults to the selected multicast domain instance. No manual configuration required.	MulticastDomain-Uf7N
Multicast group
Multicast group	Configure the multicast group IP address. Create multicast group: Enter the multicast IP address. Values: 224.0.0.0 to 239.255.255.255. Use existing group: Select a created multicast group.	Create multicast group
Multicast source
Resource type	Defaults to VPC. No additional configuration is needed. warning In this Virtual Private Cloud (VPC), multicast traffic fails for Elastic Compute Service (ECS) instances with Elastic IP Addresses (EIPs). Contact your account manager to enable the User CIDR Block feature for the VPC and add the multicast group IP as a User CIDR block to ensure normal multicast traffic forwarding.	VPC
Network interface	Select a subnet and the network interface to be used as the multicast source. The network interface created in the VPC by the TR does not support being added as a multicast source.	subnet01, eni01

Click Add to complete the action.

Delete multicast source

tip

When deleting a network interface on the VPC side, the network interface added as a multicast source will be automatically removed from the multicast group.

Click the name of the target TR instance.

In the zone below Basic information, select the Multicast domain tab.

Click the name of the target multicast domain.

In the zone below Basic information, select the Multicast group tab.

Click Delete multicast source to the right side of the target multicast group.

Click Delete to complete the action.