Request Parameters Response Elements Errors Examples See Also

CreateDefaultSubnet

Creates a default subnet with a size /20 IPv4 CIDR block in the specified Availability Zone in your default VPC. You can have only one default subnet per Availability Zone. For more information, see Create a default subnet in the Amazon VPC User Guide.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.

AvailabilityZone

The Availability Zone in which to create the default subnet.

Either AvailabilityZone or AvailabilityZoneId must be specified, but not both.

Type: String

Required: No

AvailabilityZoneId

The ID of the Availability Zone.

Either AvailabilityZone or AvailabilityZoneId must be specified, but not both.

Type: String

Required: No

DryRun

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

Type: Boolean

Required: No

Ipv6Native

Indicates whether to create an IPv6 only subnet. If you already have a default subnet for this Availability Zone, you must delete it before you can create an IPv6 only subnet.

Type: Boolean

Required: No

Response Elements

The following elements are returned by the service.

requestId

The ID of the request.

Type: String

subnet

Information about the subnet.

Type: Subnet object

Errors

For information about the errors that are common to all actions, see Common client error codes.

Examples

Example

This example creates a default subnet in Availability Zone us-east-2a.

Sample Request


https://ec2.us-east-2.amazonaws.com/?Action=CreateDefaultSubnet
&AvailabilityZone=us-east-2a
&AUTHPARAMS

Sample Response


<CreateDefaultSubnetResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>12e2fb2e-e566-488a-926d-4655example</requestId>
    <subnet>
        <assignIpv6AddressOnCreation>false</assignIpv6AddressOnCreation>
        <availabilityZone>us-east-2a</availabilityZone>
        <availableIpAddressCount>4091</availableIpAddressCount>
        <cidrBlock>172.31.32.0/20</cidrBlock>
        <defaultForAz>true</defaultForAz>
        <ipv6CidrBlockAssociationSet/>
        <mapPublicIpOnLaunch>true</mapPublicIpOnLaunch>
        <state>available</state>
        <subnetId>subnet-111f7123</subnetId>
        <tagSet/>
        <vpcId>vpc-8eaaeabc</vpcId>
    </subnet>
</CreateDefaultSubnetResponse>