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::EC2::IpPoolRouteTableAssociation A route server association is the connection established between a route server and a VPC. ## Syntax To declare this entity in your CloudFormation template, use the following syntax: ### JSON ``` { "Type" : "AWS::EC2::IpPoolRouteTableAssociation", "Properties" : { "[PublicIpv4Pool](#cfn-ec2-ippoolroutetableassociation-publicipv4pool)" : {{String}}, "[RouteTableId](#cfn-ec2-ippoolroutetableassociation-routetableid)" : {{String}} } } ``` ### YAML ``` Type: AWS::EC2::IpPoolRouteTableAssociation Properties: [PublicIpv4Pool](#cfn-ec2-ippoolroutetableassociation-publicipv4pool): {{String}} [RouteTableId](#cfn-ec2-ippoolroutetableassociation-routetableid): {{String}} ``` ## Properties `PublicIpv4Pool` The ID of a public IPv4 address pool. *Required*: Yes *Type*: String *Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement) `RouteTableId` The ID of a route table. *Required*: Yes *Type*: String *Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement) ## Return values ### Ref When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the route table association ID. 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 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). #### `AssociationId` The ID of a route table association.