class CfnTransitGateway (construct)

Language	Type name
.NET	`Amazon.CDK.AWS.EC2.CfnTransitGateway`
Java	`software.amazon.awscdk.services.ec2.CfnTransitGateway`
Python	`aws_cdk.aws_ec2.CfnTransitGateway`
TypeScript	`@aws-cdk/aws-ec2` » `CfnTransitGateway`

Implements IConstruct, IConstruct, IDependable, IInspectable

A CloudFormation AWS::EC2::TransitGateway.

Specifies a transit gateway.

You can use a transit gateway to interconnect your virtual private clouds (VPC) and on-premises networks. After the transit gateway enters the available state, you can attach your VPCs and VPN connections to the transit gateway.

To attach your VPCs, use AWS::EC2::TransitGatewayAttachment .

To attach a VPN connection, use AWS::EC2::CustomerGateway to create a customer gateway and specify the ID of the customer gateway and the ID of the transit gateway in a call to AWS::EC2::VPNConnection .

When you create a transit gateway, we create a default transit gateway route table and use it as the default association route table and the default propagation route table. You can use AWS::EC2::TransitGatewayRouteTable to create additional transit gateway route tables. If you disable automatic route propagation, we do not create a default transit gateway route table. You can use AWS::EC2::TransitGatewayRouteTablePropagation to propagate routes from a resource attachment to a transit gateway route table. If you disable automatic associations, you can use AWS::EC2::TransitGatewayRouteTableAssociation to associate a resource attachment with a transit gateway route table.

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as ec2 from '@aws-cdk/aws-ec2';
const cfnTransitGateway = new ec2.CfnTransitGateway(this, 'MyCfnTransitGateway', /* all optional props */ {
  amazonSideAsn: 123,
  associationDefaultRouteTableId: 'associationDefaultRouteTableId',
  autoAcceptSharedAttachments: 'autoAcceptSharedAttachments',
  defaultRouteTableAssociation: 'defaultRouteTableAssociation',
  defaultRouteTablePropagation: 'defaultRouteTablePropagation',
  description: 'description',
  dnsSupport: 'dnsSupport',
  multicastSupport: 'multicastSupport',
  propagationDefaultRouteTableId: 'propagationDefaultRouteTableId',
  tags: [{
    key: 'key',
    value: 'value',
  }],
  transitGatewayCidrBlocks: ['transitGatewayCidrBlocks'],
  vpnEcmpSupport: 'vpnEcmpSupport',
});

Initializer

new CfnTransitGateway(scope: Construct, id: string, props?: CfnTransitGatewayProps)

Parameters

scope Construct — - scope in which this resource is defined.
id string — - scoped id of the resource.
props CfnTransitGatewayProps — - resource properties.

Create a new AWS::EC2::TransitGateway.

Construct Props

Name	Type	Description
amazonSideAsn?	`number`	A private Autonomous System Number (ASN) for the Amazon side of a BGP session.
associationDefaultRouteTableId?	`string`	The ID of the default association route table.
autoAcceptSharedAttachments?	`string`	Enable or disable automatic acceptance of attachment requests.
defaultRouteTableAssociation?	`string`	Enable or disable automatic association with the default association route table.
defaultRouteTablePropagation?	`string`	Enable or disable automatic propagation of routes to the default propagation route table.
description?	`string`	The description of the transit gateway.
dnsSupport?	`string`	Enable or disable DNS support.
multicastSupport?	`string`	Indicates whether multicast is enabled on the transit gateway.
propagationDefaultRouteTableId?	`string`	The ID of the default propagation route table.
tags?	`CfnTag[]`	The tags for the transit gateway.
transitGatewayCidrBlocks?	`string[]`	The transit gateway CIDR blocks.
vpnEcmpSupport?	`string`	Enable or disable Equal Cost Multipath Protocol support.

amazonSideAsn?

Type: number (optional)

A private Autonomous System Number (ASN) for the Amazon side of a BGP session.

The range is 64512 to 65534 for 16-bit ASNs. The default is 64512.

associationDefaultRouteTableId?

Type: string (optional)

The ID of the default association route table.

autoAcceptSharedAttachments?

Type: string (optional)

Enable or disable automatic acceptance of attachment requests.

Disabled by default.

defaultRouteTableAssociation?

Type: string (optional)

Enable or disable automatic association with the default association route table.

Enabled by default.

defaultRouteTablePropagation?

Type: string (optional)

Enable or disable automatic propagation of routes to the default propagation route table.

Enabled by default.

description?

Type: string (optional)

The description of the transit gateway.

dnsSupport?

Type: string (optional)

Enable or disable DNS support.

Enabled by default.

multicastSupport?

Type: string (optional)

Indicates whether multicast is enabled on the transit gateway.

propagationDefaultRouteTableId?

Type: string (optional)

The ID of the default propagation route table.

tags?

Type: CfnTag[] (optional)

The tags for the transit gateway.

transitGatewayCidrBlocks?

Type: string[] (optional)

The transit gateway CIDR blocks.

vpnEcmpSupport?

Type: string (optional)

Enable or disable Equal Cost Multipath Protocol support.

Enabled by default.

Properties

Name	Type	Description
attrId	`string`	The ID of the transit gateway.
cfnOptions	`ICfnResourceOptions`	Options for this resource, such as condition, update policy etc.
cfnProperties	`{ [string]: any }`
cfnResourceType	`string`	AWS resource type.
creationStack	`string[]`
logicalId	`string`	The logical ID for this CloudFormation stack element.
node	`ConstructNode`	The construct tree node associated with this construct.
ref	`string`	Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
stack	`Stack`	The stack in which this element is defined.
tags	`TagManager`	The tags for the transit gateway.
amazonSideAsn?	`number`	A private Autonomous System Number (ASN) for the Amazon side of a BGP session.
associationDefaultRouteTableId?	`string`	The ID of the default association route table.
autoAcceptSharedAttachments?	`string`	Enable or disable automatic acceptance of attachment requests.
defaultRouteTableAssociation?	`string`	Enable or disable automatic association with the default association route table.
defaultRouteTablePropagation?	`string`	Enable or disable automatic propagation of routes to the default propagation route table.
description?	`string`	The description of the transit gateway.
dnsSupport?	`string`	Enable or disable DNS support.
multicastSupport?	`string`	Indicates whether multicast is enabled on the transit gateway.
propagationDefaultRouteTableId?	`string`	The ID of the default propagation route table.
transitGatewayCidrBlocks?	`string[]`	The transit gateway CIDR blocks.
vpnEcmpSupport?	`string`	Enable or disable Equal Cost Multipath Protocol support.
static CFN_RESOURCE_TYPE_NAME	`string`	The CloudFormation resource type name for this resource class.

attrId

Type: string

The ID of the transit gateway.

cfnOptions

Type: ICfnResourceOptions

Options for this resource, such as condition, update policy etc.

cfnProperties

Type: { [string]: any }

cfnResourceType

Type: string

AWS resource type.

creationStack

Type: string[]

logicalId

Type: string

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).

node

Type: ConstructNode

The construct tree node associated with this construct.

ref

Type: string

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).

stack

Type: Stack

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).

amazonSideAsn?

Type: number (optional)

A private Autonomous System Number (ASN) for the Amazon side of a BGP session.

The range is 64512 to 65534 for 16-bit ASNs. The default is 64512.

associationDefaultRouteTableId?

Type: string (optional)

The ID of the default association route table.

autoAcceptSharedAttachments?

Type: string (optional)

Enable or disable automatic acceptance of attachment requests.

Disabled by default.

defaultRouteTableAssociation?

Type: string (optional)

Enable or disable automatic association with the default association route table.

Enabled by default.

defaultRouteTablePropagation?

Type: string (optional)

Enable or disable automatic propagation of routes to the default propagation route table.

Enabled by default.

description?

Type: string (optional)

The description of the transit gateway.

dnsSupport?

Type: string (optional)

Enable or disable DNS support.

Enabled by default.

multicastSupport?

Type: string (optional)

Indicates whether multicast is enabled on the transit gateway.

propagationDefaultRouteTableId?

Type: string (optional)

The ID of the default propagation route table.

transitGatewayCidrBlocks?

Type: string[] (optional)

The transit gateway CIDR blocks.

vpnEcmpSupport?

Type: string (optional)

Enable or disable Equal Cost Multipath Protocol support.

Enabled by default.

static CFN_RESOURCE_TYPE_NAME

Type: string

The CloudFormation resource type name for this resource class.

Methods

Name	Description
addDeletionOverride(path)	Syntactic sugar for `addOverride(path, undefined)`.
addDependsOn(target)	Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
addMetadata(key, value)	Add a value to the CloudFormation Resource Metadata.
addOverride(path, value)	Adds an override to the synthesized CloudFormation resource.
addPropertyDeletionOverride(propertyPath)	Adds an override that deletes the value of a property from the resource definition.
addPropertyOverride(propertyPath, value)	Adds an override to a resource property.
applyRemovalPolicy(policy?, options?)	Sets the deletion policy of the resource based on the removal policy specified.
getAtt(attributeName)	Returns a token for an runtime attribute of this resource.
getMetadata(key)	Retrieve a value value from the CloudFormation Resource Metadata.
inspect(inspector)	Examines the CloudFormation resource and discloses attributes.
overrideLogicalId(newLogicalId)	Overrides the auto-generated logical ID with a specific ID.
toString()	Returns a string representation of this construct.
protected renderProperties(props)

addDeletionOverride(path)

public addDeletionOverride(path: string): void

Parameters

path string — The path of the value to delete.

Syntactic sugar for addOverride(path, undefined).

addDependsOn(target)

public addDependsOn(target: CfnResource): void

Parameters

target CfnResource

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.

addMetadata(key, value)

public addMetadata(key: string, value: any): void

Parameters

key string
value any

Add a value to the CloudFormation Resource Metadata.

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.)

addOverride(path, value)

public addOverride(path: string, value: any): void

Parameters

path string — - The path of the property, you can use dot notation to override values in complex types.
value any — - The value.

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with "Properties." (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example,

cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');

would add the overrides

"Properties": {
   "GlobalSecondaryIndexes": [
     {
       "Projection": {
         "NonKeyAttributes": [ "myattribute" ]
         ...
       }
       ...
     },
     {
       "ProjectionType": "INCLUDE"
       ...
     },
   ]
   ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.

addPropertyDeletionOverride(propertyPath)

public addPropertyDeletionOverride(propertyPath: string): void

Parameters

propertyPath string — The path to the property.

Adds an override that deletes the value of a property from the resource definition.

addPropertyOverride(propertyPath, value)

public addPropertyOverride(propertyPath: string, value: any): void

Parameters

propertyPath string — The path of the property.
value any — The value.

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).

applyRemovalPolicy(policy?, options?)

public applyRemovalPolicy(policy?: RemovalPolicy, options?: RemovalPolicyOptions): void

Parameters

policy RemovalPolicy
options RemovalPolicyOptions

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you've removed it from the CDK application or because you've made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

getAtt(attributeName)

public getAtt(attributeName: string): Reference

Parameters

attributeName string — The name of the attribute.

Returns

Reference

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.

getMetadata(key)

public getMetadata(key: string): any

Parameters

key string

Returns

any

Retrieve a value value from the CloudFormation Resource Metadata.

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.)

inspect(inspector)

public inspect(inspector: TreeInspector): void

Parameters

inspector TreeInspector — - tree inspector to collect and process attributes.

Examines the CloudFormation resource and discloses attributes.

overrideLogicalId(newLogicalId)

public overrideLogicalId(newLogicalId: string): void

Parameters

newLogicalId string — The new logical ID to use for this stack element.

Overrides the auto-generated logical ID with a specific ID.

toString()

public toString(): string

Returns

string

Returns a string representation of this construct.

protected renderProperties(props)

protected renderProperties(props: { [string]: any }): { [string]: any }

Parameters

props { [string]: any }

Returns

{ [string]: any }