> **Experimental**
>
> `@aws-cdk/aws-ec2-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# TransitGatewayRouteTablePropagationProps

Common properties for a Transit Gateway Route Table Propagation.

Extends: TransitGatewayRouteTablePropagationProps
Used as props by: TransitGatewayRouteTablePropagation

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/transit-gateway-route-table-propagation.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-ec2-alpha/lib/transit-gateway-route-table-propagation.ts#L24)

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as ec2_alpha from '@aws-cdk/aws-ec2-alpha';

declare const transitGatewayAttachment: ec2_alpha.ITransitGatewayAttachment;
declare const transitGatewayRouteTable: ec2_alpha.TransitGatewayRouteTable;
const transitGatewayRouteTablePropagationProps: ec2_alpha.TransitGatewayRouteTablePropagationProps = {
  transitGatewayRouteTable: transitGatewayRouteTable,
  transitGatewayVpcAttachment: transitGatewayAttachment,

  // the properties below are optional
  transitGatewayRouteTablePropagationName: 'transitGatewayRouteTablePropagationName',
};
```

## Properties

- `transitGatewayRouteTable`: [ITransitGatewayRouteTable](/cdk/api/v2/docs/@aws-cdk_aws-ec2-alpha.ITransitGatewayRouteTable.html) (required) — The ID of the transit gateway route table propagation.

- `transitGatewayRouteTablePropagationName`: string — Physical name of this propagation.

  **Default:** Assigned by CloudFormation.

- `transitGatewayVpcAttachment`: [ITransitGatewayAttachment](/cdk/api/v2/docs/@aws-cdk_aws-ec2-alpha.ITransitGatewayAttachment.html) (required) — The ID of the transit gateway route table propagation.