This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::EC2::TransitGatewayConnectPeer TransitGatewayConnectPeerConfiguration
<a name="aws-properties-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration"></a>

Describes the Connect peer details.

## Syntax
<a name="aws-properties-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-syntax"></a>

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

### JSON
<a name="aws-properties-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-syntax.json"></a>

```
{
  "[BgpConfigurations](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-bgpconfigurations)" : {{[ TransitGatewayAttachmentBgpConfiguration, ... ]}},
  "[InsideCidrBlocks](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-insidecidrblocks)" : {{[ String, ... ]}},
  "[PeerAddress](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-peeraddress)" : {{String}},
  "[Protocol](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-protocol)" : {{String}},
  "[TransitGatewayAddress](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-transitgatewayaddress)" : {{String}}
}
```

### YAML
<a name="aws-properties-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-syntax.yaml"></a>

```
  [BgpConfigurations](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-bgpconfigurations): {{
    - TransitGatewayAttachmentBgpConfiguration}}
  [InsideCidrBlocks](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-insidecidrblocks): {{
    - String}}
  [PeerAddress](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-peeraddress): {{String}}
  [Protocol](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-protocol): {{String}}
  [TransitGatewayAddress](#cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-transitgatewayaddress): {{String}}
```

## Properties
<a name="aws-properties-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-properties"></a>

`BgpConfigurations`  <a name="cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-bgpconfigurations"></a>
The BGP configuration details.  
*Required*: No  
*Type*: Array of [TransitGatewayAttachmentBgpConfiguration](aws-properties-ec2-transitgatewayconnectpeer-transitgatewayattachmentbgpconfiguration.md)  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`InsideCidrBlocks`  <a name="cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-insidecidrblocks"></a>
The range of interior BGP peer IP addresses.  
*Required*: Yes  
*Type*: Array of String  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`PeerAddress`  <a name="cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-peeraddress"></a>
The Connect peer IP address on the appliance side of the tunnel.  
*Required*: Yes  
*Type*: String  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`Protocol`  <a name="cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-protocol"></a>
The tunnel protocol.  
*Required*: No  
*Type*: String  
*Allowed values*: `gre`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`TransitGatewayAddress`  <a name="cfn-ec2-transitgatewayconnectpeer-transitgatewayconnectpeerconfiguration-transitgatewayaddress"></a>
The Connect peer IP address on the transit gateway side of the tunnel.  
*Required*: No  
*Type*: String  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)