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::LocalGatewayVirtualInterface

Describes a local gateway virtual interface.
## Syntax

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

```
{
 "Type" : "AWS::EC2::LocalGatewayVirtualInterface",
 "Properties" : {
 "[LocalAddress](#cfn-ec2-localgatewayvirtualinterface-localaddress)" : {{String}},
 "[LocalGatewayVirtualInterfaceGroupId](#cfn-ec2-localgatewayvirtualinterface-localgatewayvirtualinterfacegroupid)" : {{String}},
 "[OutpostLagId](#cfn-ec2-localgatewayvirtualinterface-outpostlagid)" : {{String}},
 "[PeerAddress](#cfn-ec2-localgatewayvirtualinterface-peeraddress)" : {{String}},
 "[PeerBgpAsn](#cfn-ec2-localgatewayvirtualinterface-peerbgpasn)" : {{Integer}},
 "[PeerBgpAsnExtended](#cfn-ec2-localgatewayvirtualinterface-peerbgpasnextended)" : {{Integer}},
 "[Tags](#cfn-ec2-localgatewayvirtualinterface-tags)" : {{[ Tag, ... ]}},
 "[Vlan](#cfn-ec2-localgatewayvirtualinterface-vlan)" : {{Integer}}
 }
}
```
### YAML

```
Type: AWS::EC2::LocalGatewayVirtualInterface
Properties:
 [LocalAddress](#cfn-ec2-localgatewayvirtualinterface-localaddress): {{String}}
 [LocalGatewayVirtualInterfaceGroupId](#cfn-ec2-localgatewayvirtualinterface-localgatewayvirtualinterfacegroupid): {{String}}
 [OutpostLagId](#cfn-ec2-localgatewayvirtualinterface-outpostlagid): {{String}}
 [PeerAddress](#cfn-ec2-localgatewayvirtualinterface-peeraddress): {{String}}
 [PeerBgpAsn](#cfn-ec2-localgatewayvirtualinterface-peerbgpasn): {{Integer}}
 [PeerBgpAsnExtended](#cfn-ec2-localgatewayvirtualinterface-peerbgpasnextended): {{Integer}}
 [Tags](#cfn-ec2-localgatewayvirtualinterface-tags): {{
 - Tag}}
 [Vlan](#cfn-ec2-localgatewayvirtualinterface-vlan): {{Integer}}
```
## Properties

`LocalAddress` 
The local address. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`LocalGatewayVirtualInterfaceGroupId` 
The ID of the local gateway virtual interface group. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`OutpostLagId` 
The Outpost LAG ID. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`PeerAddress` 
The peer address. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`PeerBgpAsn` 
The peer BGP ASN. 
*Required*: No 
*Type*: Integer 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`PeerBgpAsnExtended` 
The extended 32-bit ASN of the BGP peer for use with larger ASN values. 
*Required*: No 
*Type*: Integer 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`Tags` 
The tags assigned to the virtual interface. 
*Required*: No 
*Type*: Array of [Tag](aws-properties-ec2-localgatewayvirtualinterface-tag.md) 
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
`Vlan` 
The ID of the VLAN. 
*Required*: Yes 
*Type*: Integer 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
## Return values

### Ref

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the ID of the local gateway virtual interface. For example:
 `{ "Ref": "lgw-vif-07145b276bEXAMPLE" }` 
For more information about using the `Ref` function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).
### Fn::GetAtt

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.
For more information about using the `Fn::GetAtt` intrinsic function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html).
#### 

`ConfigurationState` 
The current state of the local gateway virtual interface.
`LocalBgpAsn` 
The Border Gateway Protocol (BGP) Autonomous System Number (ASN) of the local gateway.
`LocalGatewayId` 
The ID of the local gateway.
`LocalGatewayVirtualInterfaceId` 
The ID of the virtual interface.
`OwnerId` 
The ID of the AWS account that owns the local gateway virtual interface.</div><div class="naked_ctrl">
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