CmdID / aws / aws ec2

aws ec2 create-default-subnet

Creates a default subnet with a size /20 IPv4 CIDR block in the specified Availability Zone in your default VPC. AWS CLI reference

1 example 4 options Its page in the AWS CLI reference

Examples

from aws-cli, each command read by CmdID

To create a default subnet

The following create-default-subnet example creates a default subnet in Availability Zone us-west-2a.

aws ec2 create-default-subnet --availability-zone us-west-2aIdentify

--availability-zoneThe Availability Zone in which to create the default subnet.

Its output

{
    "Subnet": {
        "AvailabilityZone": "us-west-2a",
        "Tags": [],
        "AvailableIpAddressCount": 4091,
        "DefaultForAz": true,
        "Ipv6CidrBlockAssociationSet": [],
        "VpcId": "vpc-1a2b3c4d",
        "State": "available",
        "MapPublicIpOnLaunch": true,
        "SubnetId": "subnet-1122aabb",
        "CidrBlock": "172.31.32.0/20",
        "AssignIpv6AddressOnCreation": false
    }
}

For more information, see Work with your default VPC and default subnets in the Amazon VPC User Guide.

Options

4 in the AWS CLI reference

--availability-zone-idThe ID of the Availability Zone.

--availability-zoneThe Availability Zone in which to create the default subnet.

--dry-runChecks whether you have the required permissions for the action, without actually making the request, and provides an error response.

--ipv6-nativeIndicates whether to create an IPv6 only subnet.