# Creating AWS Cloud WAN's VPC attachment
This example shows how you can use this module with `core_network` subnets, and AWS Cloud WAN's VPC attachment. This examples creates the following:
* Global Network and Core Network.
* Core Network's policy (in `cwan_policy.tf`), creating two segments (prod and nonprod) in two AWS Regions (*us-east-1* and *eu-west-1*). The *prod* segments needs acceptance for the attachments.
* The VPC module creates the following (in two AWS Regions):
* Two sets of subnets (workloads and core\_network)
* Cloud WAN's VPC attachment - with attachment acceptance for the VPC to associate to the *prod* segment.
* Routing to Core Network (0.0.0.0/0 & ::/0) in workload subnets.
## Requirements
| Name | Version |
|------|---------|
| [terraform](#requirement\_terraform) | >= 1.3.0 |
| [aws](#requirement\_aws) | >= 4.27.0 |
## Providers
| Name | Version |
|------|---------|
| [aws](#provider\_aws) | >= 4.27.0 |
| [aws.awsnvirginia](#provider\_aws.awsnvirginia) | >= 4.27.0 |
## Modules
| Name | Source | Version |
|------|--------|---------|
| [ireland\_vpc](#module\_ireland\_vpc) | aws-ia/vpc/aws | >= 4.2.0 |
| [nvirginia\_vpc](#module\_nvirginia\_vpc) | aws-ia/vpc/aws | >= 4.2.0 |
## Resources
| Name | Type |
|------|------|
| [aws_networkmanager_core_network.core_network](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/networkmanager_core_network) | resource |
| [aws_networkmanager_core_network_policy_attachment.core_network_policy_attachment](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/networkmanager_core_network_policy_attachment) | resource |
| [aws_networkmanager_global_network.global_network](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/networkmanager_global_network) | resource |
| [aws_networkmanager_core_network_policy_document.policy](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/networkmanager_core_network_policy_document) | data source |
## Inputs
| Name | Description | Type | Default | Required |
|------|-------------|------|---------|:--------:|
| [cloud\_wan\_regions](#input\_cloud\_wan\_regions) | AWS Regions to create in Cloud WAN's core network. | object({
nvirginia = string
ireland = string
}) | {
"ireland": "eu-west-1",
"nvirginia": "us-east-1"
} | no |
## Outputs
| Name | Description |
|------|-------------|
| [core\_network](#output\_core\_network) | Core Network ID. |
| [core\_network\_vpc\_attachments](#output\_core\_network\_vpc\_attachments) | Core Network VPC attachments. |
| [global\_network](#output\_global\_network) | Global Network ID. |
| [vpcs](#output\_vpcs) | VPCs created. |