Function

This API is used to update information about a subnet.

URI

PUT /v1/{project_id}/vpcs/{vpc_id}/subnets/{subnet_id}

Request Message

• Request parameter

  Table 2 Request parameter

  Name	Mandatory	Type	Description
  subnet	Yes	Object	Specifies the subnet objects.

  Table 3 subnet objects

  Name	Mandatory	Type	Description
  name	Yes	String	Specifies the subnet name. The value is a string of 1 to 64 characters that can contain letters, digits, underscores (_), hyphens (-), and periods (.).
  description	No	String	Provides supplementary information about the subnet. The value is a string of no more than 255 characters and cannot contain angle brackets (< or >).
  ipv6_enable	No	Boolean	Specifies whether an IPv6 subnet can be created. The value can be true (enabled) or false (disabled). NOTE: This parameter is available only in the CN North-Beijing4 region and can be set only after the IPv6 OBT has been applied.
  dhcp_enable	No	Boolean	Specifies whether DHCP is enabled for the subnet. The value can be true (enabled) or false (disabled). If this parameter is left blank, the system automatically sets it to true by default. If this parameter is set to false, newly created ECSs cannot obtain IP addresses, and usernames and passwords cannot be injected using Cloud-init. Exercise caution when performing this operation.
  primary_dns	No	String	Specifies the IP address of DNS server 1 on the subnet. The value must be a valid IP address.
  secondary_dns	No	String	Specifies the IP address of DNS server 2 on the subnet. The value must be a valid IP address.
  dnsList	No	Array of strings	Specifies the DNS server address list of a subnet. This field is required if you need to use more than two DNS servers. This parameter value is the superset of both DNS server address 1 and DNS server address 2.
  extra_dhcp_opts	No	Array of extra_dhcp_opt objects	Specifies the NTP server address configured for the subnet. For details, see the extra_dhcp_opt object.

  Table 4 extra_dhcp_opt object

  Name	Mandatory	Type	Description
  opt_value	No	String	Specifies the NTP server address configured for the subnet. Constraints: The option ntp for opt_name indicates the NTP server configured for the subnet. Currently, only IPv4 addresses are supported. A maximum of four IP addresses can be configured, and each address must be unique. Multiple IP addresses must be separated using commas (,). The option null for opt_name indicates that no NTP server is configured for the subnet. The parameter value cannot be an empty string.
  opt_name	Yes	String	Specifies the NTP server address name configured for the subnet. Currently, the value can only be set to ntp.

• Example request

  PUT https://{Endpoint}/v1/{project_id}/vpcs/{vpc_id}/subnets/4779ab1c-7c1a-44b1-a02e-93dfc361b32d
  
  {
      "subnet": {
          "name": "subnetqq",
          "ipv6_enable": true,
          "dhcp_enable": false,
          "primary_dns": "114.xx.xx.115",
          "secondary_dns": "114.xx.xx.116",
          "extra_dhcp_opts": [
              {
                  "opt_value": "10.100.0.33,10.100.0.34",
                  "opt_name": "ntp"
              }
          ]
      }
  }
  

Response Message

• Response parameter

  Table 5 Response parameter

  Name	Type	Description
  subnet	Object	Specifies the subnet objects.

  Table 6 subnet objects

  Name	Type	Description
  id	String	Specifies a resource ID in UUID format.
  status	String	Specifies the status of the subnet. The value can be ACTIVE, UNKNOWN, or ERROR. ACTIVE: indicates that the subnet has been associated with a VPC. UNKNOWN: indicates that the subnet has not been associated with a VPC. ERROR: indicates that the subnet is abnormal.

Status Code

See Status Codes.

Error Code

See Error Codes.