Help Center> Virtual Private Cloud> API Reference> API V3> VPC> Adding a Secondary CIDR Block to a VPC

Updated on 2024-04-30 GMT+08:00

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Adding a Secondary CIDR Block to a VPC

Function

This API is used to add a secondary CIDR block to a VPC.

URI

PUT /v3/{project_id}/vpc/vpcs/{vpc_id}/add-extend-cidr

**Table 1** Parameter description
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain a project ID, see Obtaining a Project ID.
vpc_id	Yes	String	VPC ID.

Request Parameter

**Table 2** Request body parameter
Parameter	Mandatory	Type	Description
dry_run	No	Boolean	Whether to only send the check request. Value range: true: Only the check request will be sent and no secondary CIDR block will be added. Check items include mandatory parameters, request format, and permission verification. If the check fails, an error will be returned. If the check succeeds, response code 202 will be returned. false (default value): A request will be sent and a secondary CIDR block will be added.
vpc	Yes	AddExtendCidrOption object	Request body for adding a secondary CIDR block.

**Table 3** AddExtendCidrOption
Parameter	Mandatory	Type	Description
extend_cidrs	Yes	Array of strings	Secondary CIDR blocks that can be added to VPCs The value cannot contain the following: 100.64.0.0/10 214.0.0.0/7 198.18.0.0/15 169.254.0.0/16 0.0.0.0/8 127.0.0.0/8 240.0.0.0/4 172.31.0.0/16 192.168.0.0/16 255.255.255.255/32

Example Request

Add a secondary CIDR block 23.8.0.0/16 to the VPC whose ID is 99d9d709-8478-4b46-9f3f-2206b1023fd3.

PUT https://{Endpoint}/v3/{project_id}/vpc/vpcs/99d9d709-8478-4b46-9f3f-2206b1023fd3/add-extend-cidr

{
    "vpc": {
        "extend_cidrs": [
            "23.8.0.0/16"
        ]
    }
}

Response Parameter

**Table 4** Response body parameters
Parameter	Type	Description
request_id	String	Request ID
vpc	Vpc object	Response body of adding a secondary CIDR block

**Table 5** Vpc
Parameter	Type	Description
id	String	VPC ID that uniquely identifies the VPC The value is in UUID format with hyphens (-).
name	String	VPC name The value can contain up to 64 characters, including letters, digits, underscores (_), hyphens (-), and periods (.).
description	String	Provides supplementary information about the VPC. The value can contain up to 255 characters and cannot contain angle brackets (< or >).
cidr	String	Available VPC CIDR blocks Value range: 10.0.0.0/8-10.255.255.240/28 172.16.0.0/12-172.31.255.240/28 192.168.0.0/16-192.168.255.240/28 If cidr is not specified, the default value is "". The value must be in IPv4 CIDR format, for example, 192.168.0.0/16.
extend_cidrs	Array of strings	Secondary CIDR blocks of VPCs Currently, only IPv4 CIDR blocks are supported.
status	String	VPC status Value range: PENDING: The VPC is being created. ACTIVE: The VPC is created successfully.
project_id	String	ID of the project to which the VPC belongs
enterprise_project_id	String	ID of the enterprise project to which the VPC belongs The value is 0 or a string that contains a maximum of 36 characters in UUID format with hyphens (-). Value 0 indicates the default enterprise project.
created_at	String	Time when the VPC is created UTC time in the format of yyyy-MM-ddTHH:mm:ssZ
updated_at	String	Time when the VPC is updated UTC time in the format of yyyy-MM-ddTHH:mm:ssZ
cloud_resources	Array of CloudResource objects	Type and number of resources associated with the VPC Currently, only route tables and subnets of the VPC are returned. The number of virsubnets is the total number of IPv4 and IPv6 subnets.
tags	Array of Tag objects	VPC tags. For details, see the tag objects. Value range: 0 to 20 tag key-value pairs

**Table 6** CloudResource
Parameter	Type	Description
resource_type	String	Resource type
resource_count	Integer	Number of resources

**Table 7** Tag
Parameter	Type	Description
key	String	Tag key Value range: It can contain up to 36 Unicode characters and cannot be blank. The value can contain: Letters Digits Special characters: underscores (_) and hyphens (-) Chinese characters
value	String	Tag value Value range: Each value can contain a maximum of 43 Unicode characters and can be left blank. The value can contain: Letters Digits Special characters: underscore (_), dot (.), and hyphen (-) Chinese characters

Example Response

{
    "request_id": "84eb4f775d66dd916db121768ec55626", 
    "vpc": {
        "id": "0552091e-b83a-49dd-88a7-4a5c86fd9ec3", 
        "name": "vpc1", 
        "description": "test1", 
        "cidr": "192.168.0.0/16", 
        "extend_cidrs": [
            "23.8.0.0/16"
        ], 
        "enterprise_project_id": "0", 
        "tags": [
            {
                "key": "key", 
                "value": "value"
            }
        ], 
        "cloud_resources": [
            {
                "resource_type": "routetable", 
                "resource_count": 1
            }
        ], 
        "status": "ACTIVE", 
        "project_id": "060576782980d5762f9ec014dd2f1148", 
        "created_at": "2018-03-23T09:26:08Z", 
        "updated_at": "2018-08-24T08:49:53Z"
    }
}