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

Properties for defining a new VPC Interface configuration.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/shared.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-mediaconnect-alpha/lib/shared.ts#L411)

## Example

```ts
declare const stack: Stack;
declare const role: iam.IRole;
declare const securityGroup: ec2.ISecurityGroup;
declare const subnet: ec2.ISubnet;

const efaInterface = VpcInterface.define({
  vpcInterfaceName: 'efa-interface',
  role: role,
  securityGroups: [securityGroup],
  subnet: subnet,
  networkInterfaceType: NetworkInterface.EFA,  // Required for CDI
});

const videoStream = MediaStream.video({
  mediaStreamId: 1,
  mediaStreamName: 'video',
  videoFormat: MediaVideoFormat.HD_1080P,
  fmtp: {
    exactFramerate: Framerate.FPS_29_97,
    par: PixelAspectRatio.SQUARE,
  },
});

const flow = new Flow(stack, 'MyCdiFlow', {
  flowSize: FlowSize.LARGE_4X,  // Required for CDI and JPEG XS
  vpcInterfaces: [efaInterface],
  mediaStreams: [videoStream],
  source: SourceConfiguration.cdi({
    flowSourceName: 'cdi-source',
    vpcInterface: efaInterface,
    port: 5000,
    maxSyncBuffer: 100,
    mediaStreamSourceConfigurations: [{
      encoding: Encoding.RAW,
      mediaStream: videoStream,
    }],
  }),
});
```

## Properties

- `networkInterfaceType`: [NetworkInterface](/cdk/api/v2/docs/@aws-cdk_aws-mediaconnect-alpha.NetworkInterface.html) — The type of network interface.

  **Default:** undefined; when omitted, MediaConnect applies NetworkInterface.ENA at deploy time

  Use `EFA` for CDI workflows.

- `role`: [IRole](/cdk/api/v2/docs/aws-cdk-lib.aws_iam.IRole.html) (required) — IAM role that MediaConnect assumes to create ENIs in your account.

- `securityGroups`: [ISecurityGroup](/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.ISecurityGroup.html)[] (required) — Security groups to apply to the ENI.

- `subnet`: [ISubnet](/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.ISubnet.html) (required) — Subnet where the ENI is created.

  Must be in the same Availability Zone as the flow.

- `vpcInterfaceName`: string (required) — Unique name for this VPC interface within the flow.

  Cannot be changed after creation.