Create a default VPC by calling the CreateDefaultVpc API - Virtual Private Cloud - Alibaba Cloud - Virtual Private Cloud

Creates a default virtual private cloud (VPC).

Operation description

When you call this operation to create a default VPC, note the following items:

After a default VPC is created, you cannot modify its CIDR block, but you can add secondary IPv4 CIDR blocks.
Each default VPC supports up to 300,000 private network IP addresses for cloud resources, and this quota cannot be upgraded.
After a default VPC is created, a vRouter and a route table are automatically created.
Each default VPC supports up to three user CIDR blocks. If multiple user CIDR blocks overlap, the CIDR block with the shorter mask takes effect. For example, if both 10.0.0.0/16 and 10.0.0.0/24 exist, 10.0.0.0/16 takes effect.
The CreateDefaultVpc operation is asynchronous. After you send a request, the system returns an instance ID while the default VPC is still being created in the background. You can call DescribeVpcAttribute to query the creation status of the default VPC:
- If the default VPC is in the Pending state, the default VPC is being configured.
- If the default VPC is in the Available state, the default VPC is available.
The CreateDefaultVpc operation does not support concurrent creation of default VPCs in the same region.
Only one default VPC can exist in a region.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

vpc:CreateDefaultVpc

create

*VPC

acs:vpc:{#regionId}:{#accountId}:vpc/*

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the default VPC. You can call DescribeRegions to query the most recent region list.	cn-hangzhou
Ipv6CidrBlock	string	No	The IPv6 CIDR block of the default VPC. Note This parameter is required when EnableIpv6 is set to true.	2408:XXXX:346:b600::/56
EnableIpv6	boolean	No	Specifies whether to enable the IPv6 CIDR block. Valid values: false (default): does not enable the IPv6 CIDR block. true: enables the IPv6 CIDR block.	false
ResourceGroupId	string	No	The ID of the resource group.	rg-acfmystnjq4****
ClientToken	string	No	The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The ClientToken value can contain only ASCII characters. Note If you do not specify this parameter, the system uses the RequestId of the API request as the ClientToken. The RequestId may be different for each API request.	123e4567-e89b-12d3-a456-426655440000

Response elements

Element	Type	Description	Example
	object	The ID of the default VPC that is created.
VpcId	string	The ID of the default VPC that is created.	vpc-bp15zckdt37pq72zv****
VRouterId	string	The ID of the vRouter that the system automatically creates after the default VPC is created.	vrt-bp1lhl0taikrteen8****
RequestId	string	The request ID.	0ED8D006-F706-4D23-88ED-E11ED28DCAC0
RouteTableId	string	The ID of the route table that the system automatically creates after the default VPC is created.	vtb-bp1q1uirugzb1x32m****

Examples

Success response

JSON format

{
  "VpcId": "vpc-bp15zckdt37pq72zv****",
  "VRouterId": "vrt-bp1lhl0taikrteen8****",
  "RequestId": "0ED8D006-F706-4D23-88ED-E11ED28DCAC0",
  "RouteTableId": "vtb-bp1q1uirugzb1x32m****"
}

Error codes

HTTP status code	Error code	Error message	Description
400	TOKEN_PROCESSING	Action is processing.
400	InvokeError	instance quota rule invoke error.	Failed to get rule data, please wait zai shi
400	InvalidParameter	Specified CIDR block is not valid
400	ResourceNotAvailable	Resource you requested is not available in this region or zone.
400	InvalidVpcName.Malformed	Specified VPC name is not valid.
400	InvalidVpcDiscription.Malformed	Specified VPC description is not valid.
400	QuotaExceeded.Vpc	VPC quota exceeded.	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.
400	InvalidUserCidr.Quota	Specified UserCidr number is greater than 3.
400	InvalidUserCidr.Malformed	Specified UserCidr overlapping in of 100.64.0.0/10.	The user CIDR block that you specify overlaps with 100.64.0.0/10.
400	InvalidResourceGroupId	The specified ResourceGroupId does not exist.	The specified resource group ID does not exist.
400	IllegalParam.Ipv6CidrBlock	%s
400	OperationFailed.IPv6CidrNotReserved	%s
400	MissingParam.EnableIpv6	%s
400	OperationUnsupported.Ipv6Feature	%s
400	IllegalParam.ZoneId	%s
400	OperationFailed.DefaultVpcExist	%s
400	InvalidRegionId.NotFound	Specified value of "regionId" is not supported.
500	InternalError	The request processing has failed due to some unknown error.
403	Forbbiden	User not authorized to operate on the specified resource.	User not authorized to operate on the specified resource.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.