This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
# AWS::EC2::TransitGatewayMulticastDomain Options

The options for the transit gateway multicast domain.
## Syntax

To declare this entity in your CloudFormation template, use the following syntax:
### JSON

```
{
 "[AutoAcceptSharedAssociations](#cfn-ec2-transitgatewaymulticastdomain-options-autoacceptsharedassociations)" : {{String}},
 "[Igmpv2Support](#cfn-ec2-transitgatewaymulticastdomain-options-igmpv2support)" : {{String}},
 "[StaticSourcesSupport](#cfn-ec2-transitgatewaymulticastdomain-options-staticsourcessupport)" : {{String}}
}
```
### YAML

```
 [AutoAcceptSharedAssociations](#cfn-ec2-transitgatewaymulticastdomain-options-autoacceptsharedassociations): {{String}}
 [Igmpv2Support](#cfn-ec2-transitgatewaymulticastdomain-options-igmpv2support): {{String}}
 [StaticSourcesSupport](#cfn-ec2-transitgatewaymulticastdomain-options-staticsourcessupport): {{String}}
```
## Properties

`AutoAcceptSharedAssociations` 
Indicates whether to automatically accept cross-account subnet associations that are associated with the transit gateway multicast domain. 
*Required*: No 
*Type*: String 
*Allowed values*: `enable | disable` 
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
`Igmpv2Support` 
Specify whether to enable Internet Group Management Protocol (IGMP) version 2 for the transit gateway multicast domain. 
*Required*: No 
*Type*: String 
*Allowed values*: `enable | disable` 
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
`StaticSourcesSupport` 
Specify whether to enable support for statically configuring multicast group sources for a domain. 
*Required*: No 
*Type*: String 
*Allowed values*: `enable | disable` 
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-ec2-transitgatewaymulticastdomain-options.md">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-ec2-transitgatewaymulticastdomain-options.md" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>