Multicast configuration overview

This page describes the process of configuring multicast according to each supported topology.

After the configuration process is complete, you can use multicast for the following:

Multicast producers can send multicast traffic.
Multicast consumers can receive multicast traffic. A given multicast consumer must have IGMP configured as described in Configure multicast consumer instances.

Single VPC network topology

This following table describes the steps required by the multicast administrator to configure multicast in a single VPC network topology.

Step	Sub-step	Description
Create a VPC network	N/A	If you don't already have one, create a VPC network to use for multicast. Ensure that the firewall configuration for the VPC network allows multicast and IGMP traffic.
Create a multicast domain
	Create a domain group (optional)	If you plan to create redundant domains, we recommend that you create a domain group for higher availability between the domains.
	Create a domain	Create one or more domains. Each domain uses separate infrastructure to distribute multicast traffic.
	Activate the domain	Activate the domain in each zone that contains multicast producers or consumers.
Create a multicast group range
	Create a group range	Associate a multicast group IP address range with the multicast domain.
	Activate the group range	Activate the group range in each zone where multicast producers or consumers need to use the associated group IP addresses.
Enable the VPC network to produce multicast traffic
	Add the network to the domain as a multicast producer network	Create a multicast producer association between the VPC network and the domain in each zone that contains multicast producers.
	Activate the network for a group range as a multicast producer network	Create a multicast group producer activation for each group range in each zone that contains multicast producers.
	Create multicast producers	Create multicast producer instances in the VPC network.
Enable the VPC network to consume multicast traffic
	Add the network to the domain as a multicast consumer network	Create a multicast consumer association between the VPC network and the domain in each zone that contains multicast consumers.
	Activate the network for a group range as a multicast consumer network	Create a group consumer activation for each group range in each zone that contains multicast consumers.
	Create multicast consumers	Create multicast consumer instances in the VPC network and configure the instances for IGMP.

Network Connectivity Center star topology

The following sections describe how you configure multicast in a Network Connectivity Center (NCC) star topology.

Multicast administrator configuration

The multicast administrator completes the following steps described in Create multicast domains and Create multicast group ranges:

Step	Sub-step	Description
Create a VPC network	N/A	If you don't already have one, create a VPC network to use for managing the multicast infrastructure and IP address ranges of multicast groups.
Configure NCC
	Create a hub	Create a NCC hub using the preset star topology.
	Add a spoke to the hub	Add the multicast administrator VPC network as a center spoke to the hub. You can accept spoke proposals for multicast consumer VPC networks as needed as described in Control access to multicast domains.
Create a multicast domain
	Create a domain group (optional)	If you plan to create redundant domains, we recommend that you create a domain group for higher availability between the domains.
	Create a domain	Create one or more domains. Each domain uses separate infrastructure to distribute multicast traffic.
	Activate the domain	Activate the domain in each zone that contains multicast producers or consumers.
Create a multicast group range
	Create a group range	Associate a multicast group IP address range with the multicast domain. If you configure a group range that has an accept list, ensure that each multicast consumer project that needs to use the group range is in the accept list so that they can complete their configurations successfully.
	Activate the group range	Activate the group range in each zone where multicast producers or consumers need to use the associated group IP addresses.

Multicast producer configuration

This section describes the steps that a multicast producer network administrator must complete to enable multicast producers in a VPC network to send multicast traffic.

The following table provides an overview of the steps described in Enable a VPC network to produce multicast traffic:

Step	Description
Create a VPC network	If you don't already have one, create a VPC network to host multicast producers. In the NCC star topology, you can use the multicast administrator network to host multicast producers, or create a separate multicast producer network.
Add firewall rules	Ensure that the firewall configuration for the VPC network allows multicast traffic.
Add the VPC network to a hub	Add the multicast producer network as a center spoke to the hub created by the multicast administrator.
Add the multicast producer VPC network to a domain	Create a producer association between the network and the domain that was created by the multicast administrator. Complete this step in each zone that contains multicast producers.
Activate the multicast producer VPC network for a group range	Create a group producer activation for each group range in each zone that contains multicast producers.
Create multicast producers	Create multicast producer instances in the VPC network.

Multicast consumer configuration

This section describes the steps that a multicast consumer network administrator must complete to enable multicast consumers in a VPC network to receive multicast traffic.

The following table provides an overview of the steps described in Enable a VPC network to consume multicast traffic:

Step	Description
Create a VPC network	If you don't already have one, create a VPC network to host multicast consumers.
Add firewall rules	Ensure that the firewall configuration for the VPC network allows multicast and IGMP traffic.
Add the VPC network to the hub	Add the multicast consumer network as an edge spoke¹ to the hub created by the multicast administrator.
Add the multicast consumer VPC network to a domain	Create a consumer association between the network and the domain that was created by the multicast administrator. Complete this step in each zone that contains multicast consumers.
Activate the multicast consumer VPC network for a group range	Create a group consumer activation for each group range in each zone that contains multicast consumers.
Create multicast consumers	Create multicast consumer instances in the VPC network and configure the instances for IGMP.

¹ A Multicast administrator VPC network or multicast producer VPC network can host multicast consumers while being a center spoke on the hub.