Creates a subnet in an existing VPC. You can create up to 20 subnets in a VPC. 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 create each subnet, you provide the VPC ID and the CIDR block you want for the
subnet. Once you create a subnet, you can’t change its CIDR block. The subnet’s CIDR block can
be the same as the VPC’s CIDR block (assuming you want only a single subnet in the VPC), or a
subset of the VPC’s CIDR block. If you create more than one subnet in a VPC, the subnets’ CIDR
blocks must not overlap. The smallest subnet (and VPC) you can create uses a /28
netmask (16 IP addresses), and the largest uses a /18
netmask (16,384 IP
addresses).
AWS reserves both the first four and the last IP address in each subnet’s CIDR block. They’re not available for use.
Access
public
Parameters
Parameter |
Type |
Required |
Description |
---|---|---|---|
|
Required |
The ID of the VPC to create the subnet in. |
|
|
Required |
The CIDR block the subnet is to cover. |
|
|
Optional |
An associative array of parameters that can have the following keys:
|
Returns
Type |
Description |
---|---|
A |
Examples
Create a new subnet.
$ec2 = new AmazonEC2(); $response = $ec2->create_subnet('vpc-fd7cd194', '10.0.0.0/24', array( 'AvailabilityZone' => 'us-east-1b', )); var_dump($response->isOK());Result:
bool(true)
Related Methods
Source
Method defined in services/ec2.class.php | Toggle source view (8 lines) | View on GitHub