CreateVpc - API reference| Alibaba Cloud Documentation Center

Description

When you call this operation, follow these rules:

You can specify only one CIDR block for a VPC. The CIDR block must be 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, or their subnets, and the subnet mask must be 8 to 24 bits in length. The default value is 172.16.0.0/12.
When you create a VPC, its CIDR block cannot be modified.
Each VPC can use 60,000 private IP addresses for the Alibaba Cloud services. The quota cannot be increased.
After you create a VPC, a VRouter and a route table are automatically created.
A maximum of three client-side CIDR blocks can be added to a VPC. If a client-side CIDR block includes another client-side CIDR block, the one with the shorter subnet mask takes effect. For example, if both 10.0.0.0/8 and 10.1.0.0/16 are specified, only 10.0.0.0/8 takes effect.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters


Parameter	Type	Required	Example	Description
Action	String	Yes	CreateVpc	The operation that you want to perform. Set the value to CreateVpc.
RegionId	String	Yes	cn-hangzhou	The ID of the region to which the VPC belongs. You can call the DescribeRegions operation to query the ID of the region to which the VPC instance belongs.
CidrBlock	String	No	172.16.0.0/12	The CIDR block of the VPC. You can use the following CIDR blocks or their subnets as the CIDR blocks of your VPC: 172.16.0.0/12 (default) 10.0.0.0/8 192.168.0.0/16
Ipv6CidrBlock	String	No	2408:4004:0:6axx::/56	The IPv6 CIDR block of the VPC.
EnableIpv6	Boolean	No	false	Specifies whether to enable the IPv6 CIDR block. Valid values: false (Default): disables IPv6 CIDR blocks. true: enables IPv6 CIDR blocks.
VpcName	String	No	abc	The name of the VPC. The name must be 2 to 128 characters in length and can contain letters, digits, periods (.), underscores (_), and hyphens (-). It must start with a letter or a Chinese character and cannot start with `http://` or `https://`.
Description	String	No	This is my first Vpc.	The description of the VPC. The description must be 2 to 256 characters in length. It must start with a letter or a Chinese character and cannot start with `http://` or `https://`.
ResourceGroupId	String	No	rg-acfmxazb4ph6aiy****	The ID of the resource group to which the instance belongs.
DryRun	Boolean	No	false	Specifies whether to precheck this request only. Valid values: true: sends a check request without creating any VPC instance. The system checks whether the required parameters are set, and verifies the request format and the service limits. If the check fails, the corresponding error message is returned. If the check is passed, the `DryRunOperation` error code is returned. false (default): A check request is sent, and a 2XX HTTP status code is returned. After the check, a VPC is created.
UserCidr	String	No	189.16.0.0/12	The user CIDR block. Separate multiple CIDR blocks with commas (,). Up to three CIDR blocks are supported. For more information, see What is a user CIDR block in CIDR block FAQ.
ClientToken	String	No	123e4567-e89b-12d3-a456-426655440000	The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must ensure that it is unique among different requests. The ClientToken can only contain ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

Response parameters


Prameter	Type	Example	Description
VpcId	String	vpc-bp15zckdt37pq72zv****	The ID of the created VPC.
VRouterId	String	vrt-bp1lhl0taikrteen8****	The ID of the VRouter automatically created by the system after the VPC is created.
RouteTableId	String	vtb-bp145q7glnuzdv****	The ID of the route table automatically created by the system after the VPC is created.
RequestId	String	0ED8D006-F706-4D23-88ED-E11ED28DCAC0	The ID of the request.
ResourceGroupId	String	rg-acfmxazb4ph6aiy****	The ID of the resource group to which the VPC instance belongs.

Examples

Sample requests

https://vpc.aliyuncs.com/?Action=CreateVpc
&RegionId=cn-hangzhou
&<Common request parameters>

Sample success response

XML format

<CreateVpcResponse>
      <ResourceGroupId>rg-acfmxazb4ph****</ResourceGroupId>
      <RequestId>8B2F5262-6B57-43F2-97C4-971425462DFE</RequestId>
      <RouteTableId>vtb-bp1krxxzp0c2****</RouteTableId>
      <VRouterId>vrt-bp1jcg5cmxjbl9xgc****</VRouterId>
      <VpcId>vpc-bp1qpo0kug3a20qqe****</VpcId>
</CreateVpcResponse>

JSON format

{
    "ResourceGroupId": "rg-acfmxazb4ph****",
    "RequestId": "8B2F5262-6B57-43F2-97C4-971425462DFE",
    "RouteTableId": "vtb-bp1krxxzp0c29****",
    "VRouterId": "vrt-bp1jcg5cmxjbl9xgc****",
    "VpcId": "vpc-bp1qpo0kug3a20qqe****"
}

Error codes


HTTP status code	Error code	Error message	Description
404	InvalidRegionId.NotFound	Specified value of "regionId" is not supported.	The error message returned because the specified region ID does not exist. Check whether VPC is available in the region.
400	InvalidParameter	Specified CIDR block is not valid	The error message returned because the specified CIDR block is invalid.
400	ResourceNotAvailable	Resource you requested is not available in this region or zone.	The error message returned because VSwitches cannot be created in the current region or zone.
400	InvalidVpcName.Malformed	Specified VPC name is not valid.	The error message returned because the format of the VPC name is invalid.
400	InvalidVpcDiscription.Malformed	Specified VPC description is not valid.	The error message returned because the format of the VPC description is invalid.
403	Forbbiden	User not authorized to operate on the specified resource.	The error message returned because you are not authorized to perform this operation on the specified resource.
400	QuotaExceeded.Vpc	VPC quota exceeded.	The error message returned because the number of VPCs for the account has reached the upper limit.
400	ResourceNotAvailable.Vpc	Resource you requested is not available in this region or zone.	The error message returned because the resource you requested is not available in this region or zone.
400	InvalidParameter	Specified UserCidr invalid format.	The error message returned because the format of the user CIDR block is invalid.
400	InvalidParameter	Specified UserCidr Subnet mask is not valid .	The error message returned because the subnet mask of the user CIDR block is invalid.
400	InvalidUserCidr.Quota	Specified UserCidr number is greater than 3.	The error message returned because the quota of Usercidr has reached the limit.
400	InvalidUserCidr.Malformed	Specified UserCidr overlapping in of 100.64.0.0/10.	The error message returned because the UserCidr overlaps with 100.64.0.0/10.
500	InternalError	The request processing has failed due to some unknown error.	The error message returned because unknown errors have occurred.

For a list of error codes, visit the API Error Center.