<p>Associate a virtual private cloud (VPC) subnet endpoint with your custom routing accelerator.</p> <p>The listener port range must be large enough to support the number of IP addresses that can be specified in your subnet. The number of ports required is: subnet size times the number of ports per destination EC2 instances. For example, a subnet defined as /24 requires a listener port range of at least 255 ports. </p> <p>Note: You must have enough remaining listener ports available to map to the subnet ports, or the call will fail with a LimitExceededException.</p> <p>By default, all destinations in a subnet in a custom routing accelerator cannot receive traffic. To enable all destinations to receive traffic, or to specify individual port mappings that can receive traffic, see the <a href="https://docs.aws.amazon.com/global-accelerator/latest/api/API_AllowCustomRoutingTraffic.html"> AllowCustomRoutingTraffic</a> operation.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

<p>Associate a virtual private cloud (VPC) subnet endpoint with your custom routing accelerator.</p> <p>The listener port range must be large enough to support the number of IP addresses that can be specified in your subnet. The number of ports required is: subnet size times the number of ports per destination EC2 instances. For example, a subnet defined as /24 requires a listener port range of at least 255 ports. </p> <p>Note: You must have enough remaining listener ports available to map to the subnet ports, or the call will fail with a LimitExceededException.</p> <p>By default, all destinations in a subnet in a custom routing accelerator cannot receive traffic. To enable all destinations to receive traffic, or to specify individual port mappings that can receive traffic, see the <a href="https://docs.aws.amazon.com/global-accelerator/latest/api/API_AllowCustomRoutingTraffic.html"> AllowCustomRoutingTraffic</a> operation.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}