CreateVpc - Virtual Private Cloud - Alibaba Cloud Documentation Center

Usage notes

When you call this operation, take note of the following rules:

You can specify only one CIDR block for each VPC.
After you create a VPC, you cannot change its CIDR block. However, you can add secondary IPv4 CIDR blocks to the VPC.
In each VPC, cloud services can use a maximum of 60,000 private IP addresses. You cannot increase the quota.
After you create a VPC, a vRouter and a route table are automatically created.
At most three user CIDR blocks can be added to a VPC. If a user CIDR block includes another user CIDR block, the one with the shorter subnet mask takes effect. For example, if 10.0.0.0/8 and 10.1.0.0/16 are specified, only 10.0.0.0/8 takes effect.
The CreateVpc operation is asynchronous. After you send a request, the system returns a request ID and runs the task in the background. You can call the DescribeVpcAttribute operation to query the status of a VPC:
- If the VPC is in the Creating state, the VPC is being created.
- If the VPC is in the Created state, the VPC is created.
You cannot repeatedly call the CreateVpc operation to create default VPCs within the specified period of time. However, you can repeatedly call this operation to create custom VPCs within the specified period of time.

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 most recent region list.
CidrBlock	String	No	172.16.0.0/12	The CIDR block of the VPC. You can specify one of the following CIDR blocks or their subsets as the primary IPv4 CIDR block of the VPC: 192.168.0.0/16, 172.16.0.0/12, and 10.0.0.0/8. These CIDR blocks are standard private CIDR blocks as defined by Request for Comments (RFC) documents. The subnet mask must be 8 to 28 bits in length. You can also use a custom CIDR block other than 100.64.0.0/10, 224.0.0.0/4, 127.0.0.0/8, 169.254.0.0/16, and their subnets as the primary IPv4 CIDR block of the VPC.
Ipv6CidrBlock	String	No	2408:XXXX:0:6a::/56	The IPv6 CIDR blocks of the VPC.
EnableIpv6	Boolean	No	false	Specifies whether to enable IPv6. Valid values: false (default): no true: yes
VpcName	String	No	abc	The name of the VPC. The name must be 1 to 128 characters in length and cannot start with `http://` or `https://`.
Description	String	No	This is my first Vpc	The description of the VPC. The description must be 1 to 256 characters in length and cannot start with `http://` or `https://`.
ResourceGroupId	String	No	rg-acfmxazb4ph6aiy****	The ID of the resource group. For more information about resource groups, see What is a resource group?
DryRun	Boolean	No	false	Specifies whether to perform a dry run. Valid values: true: performs a dry run. The system checks the required parameters, request syntax, and limits. If the request fails the dry run, an error message is returned. If the request passes the dry run, the `DryRunOperation` error code is returned. false (default): performs a dry run and sends the request. If the request passes the dry run, a 2xx HTTP status code is returned and the operation is performed.
UserCidr	String	No	192.168.0.0/12	The user CIDR block. Separate user CIDR blocks with commas (,). You can specify up to three user CIDR blocks. For more information about user CIDR blocks, see the `What is a user CIDR block?` section in VPC 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 all requests. ClientToken can contain only ASCII characters. Note If you do not set this parameter, ClientToken is set to the value of RequestId. The value of RequestId for each API request may be different.
Ipv6Isp	String	No	BGP	The type of the IPv6 CIDR block. Valid values: BGP (default): Alibaba Cloud Border Gateway Protocol (BGP) ChinaMobile: China Mobile (single ISP). ChinaUnicom: China Unicom (single ISP). ChinaTelecom: China Telecom (single ISP). Note If your Alibaba Cloud account is allowed to use single-ISP bandwidth, you can set this parameter to ChinaTelecom, ChinaUnicom, or ChinaMobile.

Response parameters


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

Examples

Sample requests

http(s)://[Endpoint]/?Action=CreateVpc
&RegionId=cn-hangzhou
&CidrBlock=172.16.0.0/12
&Ipv6CidrBlock=2408:XXXX:0:6a::/56
&EnableIpv6=false
&VpcName=abc
&Description=This is my first Vpc
&ResourceGroupId=rg-acfmxazb4ph6aiy****
&DryRun=false
&UserCidr=192.168.0.0/12
&ClientToken=123e4567-e89b-12d3-a456-426655440000
&Ipv6Isp=BGP
&Common request parameters

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<CreateVpcResponse>
    <VpcId>vpc-bp15zckdt37pq72zv****</VpcId>
    <VRouterId>vrt-bp1lhl0taikrteen8****</VRouterId>
    <RequestId>0ED8D006-F706-4D23-88ED-E11ED28DCAC0</RequestId>
    <RouteTableId>vtb-bp145q7glnuzdv****</RouteTableId>
    <ResourceGroupId>rg-acfmxazb4ph6aiy****</ResourceGroupId>
</CreateVpcResponse>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "VpcId" : "vpc-bp15zckdt37pq72zv****",
  "VRouterId" : "vrt-bp1lhl0taikrteen8****",
  "RequestId" : "0ED8D006-F706-4D23-88ED-E11ED28DCAC0",
  "RouteTableId" : "vtb-bp145q7glnuzdv****",
  "ResourceGroupId" : "rg-acfmxazb4ph6aiy****"
}

Error codes


HttpCode	Error code	Error message	Description
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 you cannot create a vSwitch 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. Enter a valid VPC name and try again.
400	InvalidVpcDiscription.Malformed	Specified VPC description is not valid.	The error message returned because the format of the VPC description is invalid.
400	QuotaExceeded.Vpc	VPC quota exceeded.	The error message returned because the number of VPCs in this 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 number of user CIDR blocks that you specify has reached the upper limit.
400	InvalidUserCidr.Malformed	Specified UserCidr overlapping in of 100.64.0.0/10.	The error message returned because the user CIDR block that you specify overlaps with 100.64.0.0/10.
400	InvalidResourceGroupId	The specified ResourceGroupId does not exist.	The error message returned because the specified resource group ID is invalid.
400	OperationUnsupported.ResourceGroupId	ResourceGroup is not supported in this region.	The error message returned because the resource group feature is disabled.
400	ResourceNotEnough.Ipv6Cidr	The specified resource of Ipv6Cidr is not enough.	The error message returned because IPv6 addresses are insufficient.
404	InvalidRegionId.NotFound	Specified value of "regionId" is not supported.	The error message returned because RegionId is set to an invalid value. Check whether the service is available in the specified region.
500	InternalError	The request processing has failed due to some unknown error.	The error message returned because some unknown errors occurred.

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