Container for the parameters to the CreateSubnet operation. Creates a subnet in the specified VPC. For an IPv4 only subnet, specify an IPv4 CIDR block. If the VPC has an IPv6 CIDR block, you can create an IPv6 only subnet or a dual stack subnet instead. For an IPv6 only subnet, specify an IPv6 CIDR block. For a dual stack subnet, specify both an IPv4 CIDR block and an IPv6 CIDR block.
A subnet CIDR block must not overlap the CIDR block of an existing subnet in the VPC. After you create a subnet, you can't change its CIDR block.
The allowed size for an IPv4 subnet is between a /28 netmask (16 IP addresses) and a /16 netmask (65,536 IP addresses). Amazon Web Services reserves both the first four and the last IPv4 address in each subnet's CIDR block. They're not available for your use.
If you've associated an IPv6 CIDR block with your VPC, you can associate an IPv6 CIDR block with a subnet when you create it.
If you add more than one subnet to a VPC, they're set up in a star topology with a logical router in the middle.
When you stop an instance in a subnet, it retains its private IPv4 address. It's therefore possible to have a subnet with no running instances (they're all stopped), but no remaining IP addresses available.
For more information, see Subnets in the Amazon VPC User Guide.
Inheritance Hierarchy
Amazon.Runtime.AmazonWebServiceRequest
Amazon.EC2.AmazonEC2Request
Amazon.EC2.Model.CreateSubnetRequest
Namespace: Amazon.EC2.Model
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z
Syntax
public class CreateSubnetRequest : AmazonEC2Request IAmazonWebServiceRequest
The CreateSubnetRequest type exposes the following members
Constructors
| Name | Description | |
|---|---|---|
|
CreateSubnetRequest() |
Empty constructor used to set properties independently even when a simple constructor is available |
|
|
CreateSubnetRequest(string, string) |
Instantiates CreateSubnetRequest with the parameterized properties |
Properties
| Name | Type | Description | |
|---|---|---|---|
|
|
AvailabilityZone | System.String |
Gets and sets the property AvailabilityZone. The Availability Zone or Local Zone for the subnet. Default: Amazon Web Services selects one for you. If you create more than one subnet in your VPC, we do not necessarily select a different zone for each subnet.
To create a subnet in a Local Zone, set this value to the Local Zone ID, for example
To create a subnet in an Outpost, set this value to the Availability Zone for the Outpost and specify the Outpost ARN. |
|
|
AvailabilityZoneId | System.String |
Gets and sets the property AvailabilityZoneId. The AZ ID or the Local Zone ID of the subnet. |
|
|
CidrBlock | System.String |
Gets and sets the property CidrBlock.
The IPv4 network range for the subnet, in CIDR notation. For example, This parameter is not supported for an IPv6 only subnet. |
|
|
DryRun | System.Nullable<System.Boolean> |
Gets and sets the property 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 |
|
|
Ipv4IpamPoolId | System.String |
Gets and sets the property Ipv4IpamPoolId. An IPv4 IPAM pool ID for the subnet. |
|
|
Ipv4NetmaskLength | System.Nullable<System.Int32> |
Gets and sets the property Ipv4NetmaskLength. An IPv4 netmask length for the subnet. |
|
|
Ipv6CidrBlock | System.String |
Gets and sets the property Ipv6CidrBlock. The IPv6 network range for the subnet, in CIDR notation. This parameter is required for an IPv6 only subnet. |
|
|
Ipv6IpamPoolId | System.String |
Gets and sets the property Ipv6IpamPoolId. An IPv6 IPAM pool ID for the subnet. |
|
|
Ipv6Native | System.Nullable<System.Boolean> |
Gets and sets the property Ipv6Native. Indicates whether to create an IPv6 only subnet. |
|
|
Ipv6NetmaskLength | System.Nullable<System.Int32> |
Gets and sets the property Ipv6NetmaskLength. An IPv6 netmask length for the subnet. |
|
|
OutpostArn | System.String |
Gets and sets the property OutpostArn. The Amazon Resource Name (ARN) of the Outpost. If you specify an Outpost ARN, you must also specify the Availability Zone of the Outpost subnet. |
|
|
TagSpecifications | System.Collections.Generic.List<Amazon.EC2.Model.TagSpecification> |
Gets and sets the property TagSpecifications. The tags to assign to the subnet. Starting with version 4 of the SDK this property will default to null. If no data for this property is returned from the service the property will also be null. This was changed to improve performance and allow the SDK and caller to distinguish between a property not set or a property being empty to clear out a value. To retain the previous SDK behavior set the AWSConfigs.InitializeCollections static property to true. |
|
|
VpcId | System.String |
Gets and sets the property VpcId. The ID of the VPC. |
Examples
This example creates a subnet in the specified VPC with the specified CIDR block. We recommend that you let us select an Availability Zone for you.
To create a subnet
var client = new AmazonEC2Client();
var response = client.CreateSubnet(new CreateSubnetRequest
{
CidrBlock = "10.0.1.0/24",
VpcId = "vpc-a01106c2"
});
Subnet subnet = response.Subnet;
Version Information
.NET:
Supported in: 8.0 and newer, Core 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.7.2 and newer