Associating VPC attachments and subnets with a multicast domain using Amazon VPC Transit Gateways - Amazon VPC
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Associating VPC attachments and subnets with a multicast domain using Amazon VPC Transit Gateways

Use the following procedure to associate a VPC attachment with a multicast domain. When you create an association, you can then select the subnets to include in the multicast domain.

Before you begin, you must create a VPC attachment on your transit gateway. For more information, see Amazon VPC attachments in Amazon VPC Transit Gateways.

To associate VPC attachments with a multicast domain using the console
  1. Open the Amazon VPC console at https://console.amazonaws.cn/vpc/.

  2. On the navigation pane, choose Transit Gateway Multicast.

  3. Select the multicast domain, and then choose Actions, Create association.

  4. For Choose attachment to associate, select the transit gateway attachment.

  5. For Choose subnets to associate, select the subnets to include in the multicast domain.

  6. Choose Create association.

To associate VPC attachments with a multicast domain using the Amazon CLI

Use the associate-transit-gateway-multicast-domain command.