This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::NetworkManager::CoreNetwork
<a name="aws-resource-networkmanager-corenetwork"></a>

Describes a core network.

## Syntax
<a name="aws-resource-networkmanager-corenetwork-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-resource-networkmanager-corenetwork-syntax.json"></a>

```
{
  "Type" : "AWS::NetworkManager::CoreNetwork",
  "Properties" : {
      "[Description](#cfn-networkmanager-corenetwork-description)" : String,
      "[GlobalNetworkId](#cfn-networkmanager-corenetwork-globalnetworkid)" : String,
      "[PolicyDocument](#cfn-networkmanager-corenetwork-policydocument)" : Json,
      "[Tags](#cfn-networkmanager-corenetwork-tags)" : [ Tag, ... ]
    }
}
```

### YAML
<a name="aws-resource-networkmanager-corenetwork-syntax.yaml"></a>

```
Type: AWS::NetworkManager::CoreNetwork
Properties:
  [Description](#cfn-networkmanager-corenetwork-description): String
  [GlobalNetworkId](#cfn-networkmanager-corenetwork-globalnetworkid): String
  [PolicyDocument](#cfn-networkmanager-corenetwork-policydocument): Json
  [Tags](#cfn-networkmanager-corenetwork-tags): 
    - Tag
```

## Properties
<a name="aws-resource-networkmanager-corenetwork-properties"></a>

`Description`  <a name="cfn-networkmanager-corenetwork-description"></a>
The description of a core network.  
*Required*: No  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `0`  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`GlobalNetworkId`  <a name="cfn-networkmanager-corenetwork-globalnetworkid"></a>
The ID of the global network that your core network is a part of.   
*Required*: Yes  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `0`  
*Maximum*: `50`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`PolicyDocument`  <a name="cfn-networkmanager-corenetwork-policydocument"></a>
Describes a core network policy. For more information, see [Core network policies](https://docs.aws.amazon.com/network-manager/latest/cloudwan/cloudwan-policy-change-sets.html).  
If you update the policy document, CloudFormation will apply the core network change set generated from the updated policy document, and then set it as the LIVE policy.  
*Required*: No  
*Type*: Json  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Tags`  <a name="cfn-networkmanager-corenetwork-tags"></a>
The list of key-value tags associated with a core network.  
*Required*: No  
*Type*: Array of [Tag](aws-properties-networkmanager-corenetwork-tag.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Return values
<a name="aws-resource-networkmanager-corenetwork-return-values"></a>

### Ref
<a name="aws-resource-networkmanager-corenetwork-return-values-ref"></a>

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the ID of the core network. For example, `{ "Ref: "core-network-060ea2740fe60fd38" }`.

For more information about using the `Ref` function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).

### Fn::GetAtt
<a name="aws-resource-networkmanager-corenetwork-return-values-fn--getatt"></a>

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the `Fn::GetAtt` intrinsic function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html).

#### 
<a name="aws-resource-networkmanager-corenetwork-return-values-fn--getatt-fn--getatt"></a>

`CoreNetworkArn`  <a name="CoreNetworkArn-fn::getatt"></a>
The ARN of the core network.

`CoreNetworkId`  <a name="CoreNetworkId-fn::getatt"></a>
The ID of the core network.

`CreatedAt`  <a name="CreatedAt-fn::getatt"></a>
The timestamp when the core network was created.

`Edges`  <a name="Edges-fn::getatt"></a>
The edges.

`NetworkFunctionGroups`  <a name="NetworkFunctionGroups-fn::getatt"></a>
The network function groups associated with a core network.

`OwnerAccount`  <a name="OwnerAccount-fn::getatt"></a>
The owner of the core network.

`Segments`  <a name="Segments-fn::getatt"></a>
The segments.

`State`  <a name="State-fn::getatt"></a>
The current state of the core network. These states are: `CREATING` \$1 `UPDATING` \$1 `AVAILABLE` \$1 `DELETING`. 

# AWS::NetworkManager::CoreNetwork CoreNetworkEdge
<a name="aws-properties-networkmanager-corenetwork-corenetworkedge"></a>

Describes a core network edge.

## Syntax
<a name="aws-properties-networkmanager-corenetwork-corenetworkedge-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-networkmanager-corenetwork-corenetworkedge-syntax.json"></a>

```
{
  "[Asn](#cfn-networkmanager-corenetwork-corenetworkedge-asn)" : Number,
  "[EdgeLocation](#cfn-networkmanager-corenetwork-corenetworkedge-edgelocation)" : String,
  "[InsideCidrBlocks](#cfn-networkmanager-corenetwork-corenetworkedge-insidecidrblocks)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-networkmanager-corenetwork-corenetworkedge-syntax.yaml"></a>

```
  [Asn](#cfn-networkmanager-corenetwork-corenetworkedge-asn): Number
  [EdgeLocation](#cfn-networkmanager-corenetwork-corenetworkedge-edgelocation): String
  [InsideCidrBlocks](#cfn-networkmanager-corenetwork-corenetworkedge-insidecidrblocks): 
    - String
```

## Properties
<a name="aws-properties-networkmanager-corenetwork-corenetworkedge-properties"></a>

`Asn`  <a name="cfn-networkmanager-corenetwork-corenetworkedge-asn"></a>
The ASN of a core network edge.  
*Required*: No  
*Type*: Number  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`EdgeLocation`  <a name="cfn-networkmanager-corenetwork-corenetworkedge-edgelocation"></a>
The Region where a core network edge is located.  
*Required*: No  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `1`  
*Maximum*: `63`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`InsideCidrBlocks`  <a name="cfn-networkmanager-corenetwork-corenetworkedge-insidecidrblocks"></a>
The inside IP addresses used for core network edges.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::NetworkManager::CoreNetwork CoreNetworkNetworkFunctionGroup
<a name="aws-properties-networkmanager-corenetwork-corenetworknetworkfunctiongroup"></a>

Describes a network function group.

## Syntax
<a name="aws-properties-networkmanager-corenetwork-corenetworknetworkfunctiongroup-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-networkmanager-corenetwork-corenetworknetworkfunctiongroup-syntax.json"></a>

```
{
  "[EdgeLocations](#cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-edgelocations)" : [ String, ... ],
  "[Name](#cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-name)" : String,
  "[Segments](#cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-segments)" : Segments
}
```

### YAML
<a name="aws-properties-networkmanager-corenetwork-corenetworknetworkfunctiongroup-syntax.yaml"></a>

```
  [EdgeLocations](#cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-edgelocations): 
    - String
  [Name](#cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-name): String
  [Segments](#cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-segments): 
    Segments
```

## Properties
<a name="aws-properties-networkmanager-corenetwork-corenetworknetworkfunctiongroup-properties"></a>

`EdgeLocations`  <a name="cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-edgelocations"></a>
The core network edge locations.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Name`  <a name="cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-name"></a>
The name of the network function group.  
*Required*: No  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `0`  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Segments`  <a name="cfn-networkmanager-corenetwork-corenetworknetworkfunctiongroup-segments"></a>
The segments associated with the network function group.  
*Required*: No  
*Type*: [Segments](aws-properties-networkmanager-corenetwork-segments.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::NetworkManager::CoreNetwork CoreNetworkSegment
<a name="aws-properties-networkmanager-corenetwork-corenetworksegment"></a>

Describes a core network segment, which are dedicated routes. Only attachments within this segment can communicate with each other.

## Syntax
<a name="aws-properties-networkmanager-corenetwork-corenetworksegment-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-networkmanager-corenetwork-corenetworksegment-syntax.json"></a>

```
{
  "[EdgeLocations](#cfn-networkmanager-corenetwork-corenetworksegment-edgelocations)" : [ String, ... ],
  "[Name](#cfn-networkmanager-corenetwork-corenetworksegment-name)" : String,
  "[SharedSegments](#cfn-networkmanager-corenetwork-corenetworksegment-sharedsegments)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-networkmanager-corenetwork-corenetworksegment-syntax.yaml"></a>

```
  [EdgeLocations](#cfn-networkmanager-corenetwork-corenetworksegment-edgelocations): 
    - String
  [Name](#cfn-networkmanager-corenetwork-corenetworksegment-name): String
  [SharedSegments](#cfn-networkmanager-corenetwork-corenetworksegment-sharedsegments): 
    - String
```

## Properties
<a name="aws-properties-networkmanager-corenetwork-corenetworksegment-properties"></a>

`EdgeLocations`  <a name="cfn-networkmanager-corenetwork-corenetworksegment-edgelocations"></a>
The Regions where the edges are located.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Name`  <a name="cfn-networkmanager-corenetwork-corenetworksegment-name"></a>
The name of a core network segment.  
*Required*: No  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `0`  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SharedSegments`  <a name="cfn-networkmanager-corenetwork-corenetworksegment-sharedsegments"></a>
The shared segments of a core network.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::NetworkManager::CoreNetwork Segments
<a name="aws-properties-networkmanager-corenetwork-segments"></a>

<a name="aws-properties-networkmanager-corenetwork-segments-description"></a>The `Segments` property type specifies Property description not available. for an [AWS::NetworkManager::CoreNetwork](aws-resource-networkmanager-corenetwork.md).

## Syntax
<a name="aws-properties-networkmanager-corenetwork-segments-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-networkmanager-corenetwork-segments-syntax.json"></a>

```
{
  "[SendTo](#cfn-networkmanager-corenetwork-segments-sendto)" : [ String, ... ],
  "[SendVia](#cfn-networkmanager-corenetwork-segments-sendvia)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-networkmanager-corenetwork-segments-syntax.yaml"></a>

```
  [SendTo](#cfn-networkmanager-corenetwork-segments-sendto): 
    - String
  [SendVia](#cfn-networkmanager-corenetwork-segments-sendvia): 
    - String
```

## Properties
<a name="aws-properties-networkmanager-corenetwork-segments-properties"></a>

`SendTo`  <a name="cfn-networkmanager-corenetwork-segments-sendto"></a>
Property description not available.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SendVia`  <a name="cfn-networkmanager-corenetwork-segments-sendvia"></a>
Property description not available.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::NetworkManager::CoreNetwork Tag
<a name="aws-properties-networkmanager-corenetwork-tag"></a>

Describes a tag.

## Syntax
<a name="aws-properties-networkmanager-corenetwork-tag-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-networkmanager-corenetwork-tag-syntax.json"></a>

```
{
  "[Key](#cfn-networkmanager-corenetwork-tag-key)" : String,
  "[Value](#cfn-networkmanager-corenetwork-tag-value)" : String
}
```

### YAML
<a name="aws-properties-networkmanager-corenetwork-tag-syntax.yaml"></a>

```
  [Key](#cfn-networkmanager-corenetwork-tag-key): String
  [Value](#cfn-networkmanager-corenetwork-tag-value): String
```

## Properties
<a name="aws-properties-networkmanager-corenetwork-tag-properties"></a>

`Key`  <a name="cfn-networkmanager-corenetwork-tag-key"></a>
The tag key.  
Constraints: Maximum length of 128 characters.  
*Required*: Yes  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `0`  
*Maximum*: `10000000`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Value`  <a name="cfn-networkmanager-corenetwork-tag-value"></a>
The tag value.  
Constraints: Maximum length of 256 characters.  
*Required*: Yes  
*Type*: String  
*Pattern*: `[\s\S]*`  
*Minimum*: `0`  
*Maximum*: `10000000`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)