---
type: resource-type
title: TransitGatewayMulticastDomainAssociation
description: aws resource type AWS::EC2::TransitGatewayMulticastDomainAssociation
name: TransitGatewayMulticastDomainAssociation
lexicon: aws
resource_type: AWS::EC2::TransitGatewayMulticastDomainAssociation
---
`AWS::EC2::TransitGatewayMulticastDomainAssociation`, a resource type of the aws lexicon.

## Properties

- `SubnetId` (`string`, required): The IDs of the subnets to associate with the transit gateway multicast domain.
- `TransitGatewayAttachmentId` (`string`, required): The ID of the transit gateway attachment.
- `TransitGatewayMulticastDomainId` (`string`, required): The ID of the transit gateway multicast domain.
- `ResourceId` (`string`, optional): The ID of the resource.
- `ResourceType` (`string`, optional): The type of resource, for example a VPC attachment.
- `State` (`string`, optional): The state of the subnet association.

## Attributes

- `ResourceId`
- `ResourceType`
- `State`