create_subnet¶
Operation¶
async
¶
create_subnet(input: CreateSubnetInput, plugins: list[Plugin] | None = None) -> CreateSubnetOutput
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.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
input
|
CreateSubnetInput
|
An instance of |
required |
plugins
|
list[Plugin] | None
|
A list of callables that modify the configuration dynamically. Changes made by these plugins only apply for the duration of the operation execution and will not affect any other operation invocations. |
None
|
Returns:
| Type | Description |
|---|---|
CreateSubnetOutput
|
An instance of |
Input¶
dataclass
¶
Bases: _SerdeShape
Dataclass for CreateSubnetInput structure.
Attributes¶
class-attribute
instance-attribute
¶
availability_zone: str | None = ...
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 us-west-2-lax-1a. For information about the Regions that
support Local Zones, see Available Local
Zones.
To create a subnet in an Outpost, set this value to the Availability Zone for the Outpost and specify the Outpost ARN.
class-attribute
instance-attribute
¶
availability_zone_id: str | None = ...
The AZ ID or the Local Zone ID of the subnet.
class-attribute
instance-attribute
¶
cidr_block: str | None = ...
The IPv4 network range for the subnet, in CIDR notation. For example,
10.0.0.0/24. We modify the specified CIDR block to its canonical form;
for example, if you specify 100.68.0.18/18, we modify it to
100.68.0.0/18.
This parameter is not supported for an IPv6 only subnet.
class-attribute
instance-attribute
¶
dry_run: bool | None = ...
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.
class-attribute
instance-attribute
¶
ipv4_ipam_pool_id: str | None = ...
An IPv4 IPAM pool ID for the subnet.
class-attribute
instance-attribute
¶
ipv4_netmask_length: int | None = ...
An IPv4 netmask length for the subnet.
class-attribute
instance-attribute
¶
ipv6_cidr_block: str | None = ...
The IPv6 network range for the subnet, in CIDR notation. This parameter is required for an IPv6 only subnet.
class-attribute
instance-attribute
¶
ipv6_ipam_pool_id: str | None = ...
An IPv6 IPAM pool ID for the subnet.
class-attribute
instance-attribute
¶
ipv6_native: bool | None = ...
Indicates whether to create an IPv6 only subnet.
class-attribute
instance-attribute
¶
ipv6_netmask_length: int | None = ...
An IPv6 netmask length for the subnet.
class-attribute
instance-attribute
¶
outpost_arn: str | None = ...
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.
Output¶
dataclass
¶
Bases: _SerdeShape
Dataclass for CreateSubnetOutput structure.
Attributes¶
class-attribute
instance-attribute
¶
Metadata about the response that produced this output. Use this to recover the request identifiers a service's support team needs in order to investigate a call. Members of the metadata are individually optional.
class-attribute
instance-attribute
¶
Information about the subnet.