Creating an SNAT Rule

Function

This API is used to create an SNAT rule.

You can create an SNAT rule only when status of the NAT gateway is set to ACTIVE and admin_state_up of the NAT gateway administrator to True.

URI

POST /v2.0/snat_rules

Request

Table 1 describes the request parameter.

**Table 1** Request parameter
Parameter	Mandatory	Type	Description
snat_rule	Yes	Object	Specifies the SNAT rule object. For details, see Table 2.

**Table 2** Description of the **snat_rule** field
Parameter	Mandatory	Type	Description
nat_gateway_id	Yes	String	Specifies the NAT gateway ID.
network_id	No	String	Specifies the network ID used by the SNAT rule. This parameter and cidr are alternative.
cidr	No	String	Specifies CIDR, which can be in the format of a network segment or a host IP address. This parameter and network_id are alternative. If source_type is set to 0, cidr must be a subset of the VPC subnet. If source_type is set to 1, cidr must be a CIDR block of your on-premises network connected to the VPC through Direct Connect or Cloud Connect.
source_type	No	Integer	0: Either network_id or cidr can be specified in a VPC. 1: Only cidr can be specified over a Direct Connect connection. If no value is entered, the default value 0 (VPC) is used.
floating_ip_id	Yes	String	Specifies the EIP ID. Use commas (,) to separate multiple IDs. The maximum length of the ID is 4,096 bytes. Constraints: The number of EIP IDs cannot exceed 20.

Response

Table 3 lists response parameters.

**Table 3** Response parameter
Parameter	Type	Description
snat_rule	Object	Specifies the SNAT rule object. For details, see Table 4.

**Table 4** Description of the **snat_rule** field
Parameter	Type	Description
id	String	Specifies the SNAT rule ID.
tenant_id	String	Specifies the project ID.
nat_gateway_id	String	Specifies the NAT gateway ID.
network_id	String	Specifies the network ID used by the SNAT rule.
cidr	String	Specifies a subset of the VPC subnet CIDR block or a CIDR block of Direct Connect connection.
source_type	Integer	0: Either network_id or cidr can be specified in a VPC. 1: Only cidr can be specified over a Direct Connect connection. If no value is entered, the default value 0 (VPC) is used.
floating_ip_id	String(4096)	Specifies the EIP ID. Use commas (,) to separate multiple IDs. The maximum length of the ID is 4,096 bytes.
floating_ip_address	String(1024)	Specifies the EIP. Use commas (,) to separate multiple EIPs. The maximum length is 1,024 bytes.
status	String	Specifies the status of the SNAT rule. For details about all its values, see Table 1.
admin_state_up	Boolean	Specifies the unfrozen or frozen state. Specifies whether the SNAT rule is enabled or disabled. The state can be: true: The SNAT rule is enabled. false: The SNAT rule is disabled.
created_at	String	Specifies when the SNAT rule is created (UTC time). Its value rounds to 6 decimal places for seconds. The format is yyyy-mm-dd hh:mm:ss.

Examples

Example request

Configure parameter network_id in a VPC.

POST https://{Endpoint}/v2.0/snat_rules 
{
    "snat_rule": {
        "nat_gateway_id": "a78fb3eb-1654-4710-8742-3fc49d5f04f8",
        "network_id": "eaad9cd6-2372-4be1-9535-9bd37210ae7b",
        "source_type":0,
        "floating_ip_id": "bdc10a4c-d81a-41ec-adf7-de857f7c812a"
    }
}

Configure parameter cidr in a VPC.

POST https://{Endpoint}/v2.0/snat_rules
{      
   "snat_rule": {
         "nat_gateway_id": "a78fb3eb-1654-4710-8742-3fc49d5f04f8",
         "cidr": "192.168.1.10/32",
         "source_type":0,
         "floating_ip_id": "bdc10a4c-d81a-41ec-adf7-de857f7c812a"
      }
  }

Configure parameter cidr over a Direct Connect connection.

POST https://{Endpoint}/v2.0/snat_rules 
 {
      "snat_rule": { 
         "nat_gateway_id": "a78fb3eb-1654-4710-8742-3fc49d5f04f8",
         "cidr": "172.30.0.0/24",
         "source_type":1,
         "floating_ip_id": "bdc10a4c-d81a-41ec-adf7-de857f7c812a"
      }
  }

Example response

Response to the request for specifying the network_id for a VPC

{ 
     "snat_rule": { 
         "floating_ip_id": "bdc10a4c-d81a-41ec-adf7-de857f7c812a", 
         "status": "PENDING_CREATE", 
         "nat_gateway_id": "a78fb3eb-1654-4710-8742-3fc49d5f04f8", 
         "admin_state_up": true, 
         "network_id": "eaad9cd6-2372-4be1-9535-9bd37210ae7b", 
         "cidr": null, 
         "source_type":0, 
         "tenant_id": "27e25061336f4af590faeabeb7fcd9a3", 
         "created_at": "2017-11-18 07:54:21.665430", 
         "id": "5b95c675-69c2-4656-ba06-58ff72e1d338", 
         "floating_ip_address": "5.21.11.226",
     } 
 }

Response to the request for specifying the CIDR block in a VPC

{ 
     "snat_rule": { 
         "floating_ip_id": "bdc10a4c-d81a-41ec-adf7-de857f7c812a", 
         "status": "PENDING_CREATE", 
         "nat_gateway_id": "a78fb3eb-1654-4710-8742-3fc49d5f04f8", 
         "admin_state_up": true, 
         "cidr": "192.168.1.10/32", 
         "source_type":0, 
         "tenant_id": "27e25061336f4af590faeabeb7fcd9a3", 
         "created_at": "2017-11-18 07:54:21.665430", 
         "id": "5b95c675-69c2-4656-ba06-58ff72e1d338", 
         "floating_ip_address": "5.21.11.226",
     } 
 }

Response to the request for specifying the CIDR block in a VPC

{ 
     "snat_rule": { 
         "floating_ip_id": "bdc10a4c-d81a-41ec-adf7-de857f7c812a", 
         "status": "PENDING_CREATE", 
         "nat_gateway_id": "a78fb3eb-1654-4710-8742-3fc49d5f04f8", 
         "admin_state_up": true, 
         "cidr": "172.30.0.0/24", 
         "source_type":1, 
         "tenant_id": "27e25061336f4af590faeabeb7fcd9a3", 
         "created_at": "2017-11-18 07:54:21.665430", 
         "id": "5b95c675-69c2-4656-ba06-58ff72e1d338", 
         "floating_ip_address": "5.21.11.226",
     } 
 }