AWS Documentation » AWS CloudFormation » User Guide » Template Reference » AWS Resource and Property Types Reference » Amazon EC2 Resource Types Reference » AWS::EC2::SubnetCidrBlock

Filter View: All JSON YAML

AWS::EC2::SubnetCidrBlock

The AWS::EC2::SubnetCidrBlock resource associates a single IPv6 CIDR block with an Amazon VPC subnet.

Syntax

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

JSON

{
   "Type" : "AWS::EC2::SubnetCidrBlock",
   "Properties" : {
      "Ipv6CidrBlock" : String,
      "SubnetId" : String
   }
}     

YAML

Type: AWS::EC2::SubnetCidrBlock
Properties: 
  Ipv6CidrBlock: String
  SubnetId: String

Properties

Ipv6CidrBlock

The IPv6 CIDR block for the subnet. The CIDR block must have a prefix length of /64.

Required: Yes

Type: String

Update requires: Replacement

SubnetId

The ID of the subnet to associate the IPv6 CIDR block with.

Required: Yes

Type: String

Update requires: Replacement

Example

The following example associates an IPv6 CIDR block (with a prefix length of /64) with the Ipv6TestSubnet subnet.

JSON

{
  "Ipv6TestSubnetCidrBlock": {
    "Type": "AWS::EC2::SubnetCidrBlock",
    "Properties": {
      "Ipv6CidrBlock": { "Ref" : "Ipv6SubnetCidrBlock" },
      "SubnetId": { "Ref" : "Ipv6TestSubnet" }
    }
  }
}

YAML

Ipv6TestSubnetCidrBlock:
  Type: AWS::EC2::SubnetCidrBlock
  Properties:
    Ipv6CidrBlock: !Ref Ipv6SubnetCidrBlock
    SubnetId: !Ref Ipv6TestSubnet