CreateCen - Cloud Enterprise Network - Alibaba Cloud Documentation Center

A Cloud Enterprise Network (CEN) instance is the fundamental resource for managing an integrated network. A CEN instance manages a network that can span one or more regions. Before you enable communication between network instances, you must call the CreateCen operation to create a CEN instance.

Operation description

CreateCen is an asynchronous operation. After a request is sent, the system returns a CEN instance ID, but the CEN instance is not created immediately. The creation task runs in the background. You can call the DescribeCens operation to query the status of the CEN instance.

If a CEN instance is in the Creating status, it is being created. In this status, you can only query the instance. You cannot perform other operations.
If a CEN instance is in the Active status, the instance is created.

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Test

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 support 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

cen:CreateCen

create

*CenInstance

acs:cen:*:{#accountId}:ceninstance/*

None

Request parameters

Parameter	Type	Required	Description	Example
ClientToken	string	No	The client token used to ensure the idempotence of the request. Generate a unique parameter value from your client for each request. `ClientToken` supports only ASCII characters. Note If you do not specify this parameter, the system uses the RequestId of the request as the ClientToken. The RequestId is different for each request.	02fb3da4-130e-11e9-8e44-001****
Name	string	No	The name of the CEN instance. The name can be empty or 1 to 128 characters in length. It cannot start with `http://` or `https://`.	testname
Description	string	No	The description of the CEN instance. The description can be empty or 1 to 256 characters in length. It cannot start with `http://` or `https://`.	testdesc
ProtectionLevel	string	No	The level of CIDR block overlap. Set the value to REDUCED. This is the default value. This value specifies that CIDR blocks can overlap but cannot be identical.	REDUCED
Tag	array<object>	No	The tag information. You can specify up to 20 tags.
	object	No
Key	string	No	The tag key. The tag key cannot be an empty string. It can be up to 64 characters in length. It cannot start with `aliyun` or `acs:`. It cannot contain `http://` or `https://`. You can specify up to 20 tag keys.	tagtest
Value	string	No	The tag value. The tag value can be empty or a string of up to 128 characters. It cannot start with `aliyun` or `acs:`. It cannot contain `http://` or `https://`. Each tag key must have a corresponding tag value. You can specify up to 20 tag values.	tagtest

Response parameters

Parameter	Type	Description	Example
	object	The returned data.
CenId	string	The ID of the CEN instance.	cen-dc4vwznpwbobrl****
RequestId	string	The request ID.	0C2EE7A8-74D4-4081-8236-CEBDE3BBCF50

Examples

Success response

JSON format

{
  "CenId": "cen-dc4vwznpwbobrl****",
  "RequestId": "0C2EE7A8-74D4-4081-8236-CEBDE3BBCF50"
}

Error codes

HTTP status code	Error code	Error message	Description
400	IllegalParam.ResourceGroupId	ResourceGroupId is illegal.	The error message returned because the specified resource group is invalid.
400	InvalidTagValue	The tag values are not valid.	The error message returned because the specified tag value is invalid.
400	InvalidParameter	Invalid parameter.	The error message returned because the parameter is set to an invalid value.
400	Unauthorized	The AccessKeyId is unauthorized.	The error message returned because you do not have the permissions to perform this operation.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.