doc-exports/docs/vpc/api-ref/vpc_floatingiP_0003.html

Assigning a Floating IP Address

Function

When assigning a floating IP address, you need to obtain the external network ID floating_network_id of the floating IP address.

You can use GET /v2.0/networks?router:external=True or run the neutron net-external-list command to obtain the UUID of the external network required for assigning a floating IP address.

Note the following when you use EIPs of the Dedicated Load Balancer (5_gray) type:

• In eu-de, EIPs of the Dedicated Load Balancer (5_gray) type cannot be assigned anymore. You can assign EIPs of the BGP (5_bgp) type.
• Existing EIPs of the Dedicated Load Balancer (5_gray) type can be bound to dedicated or shared load balancers.
  • The EIP console cannot be used to bind EIPs to or unbind them from dedicated load balancers.
  • You can use APIs to bind EIPs to or unbind them from dedicated load balancers. For details, see Binding an EIP and Unbinding an EIP.
  • EIPs of this type can be bound to or unbound from shared load balancers using the EIP console or APIs.
  • You are advised to bind or unbind BGP EIPs to or from dedicated load balancers.
• Do not add EIPs of the dedicated load balancer type (5_gray) and other types to the same shared bandwidth. Otherwise, the bandwidth limit policy will not take effect.

URI

POST /v2.0/floatingips

Request Parameters

Table 1 Request parameter

Parameter	Type	Mandatory	Description
floatingip	floatingip object	Yes	Specifies the floating IP address list. For details, see Table 2.

Table 2 floatingip objects

Parameter	Mandatory	Type	Description
floating_ip_address	No	String	Specifies the floating IP address.
floating_network_id	Yes	String	Specifies the external network ID. You can only use fixed external network. You can use GET /v2.0/networks?router:external=True or GET /v2.0/networks?name={floating_network} or run the neutron net-external-list mode command to obtain information about the external network.
port_id	No	String	Specifies the port ID.
fixed_ip_address	No	String	Specifies the private IP address of the associated port.

Response Parameters

Table 3 Response parameter

Parameter	Type	Description
floatingip	floatingip object	Specifies the floating IP address list. For details, see Table 4.

Table 4 floatingip objects

Parameter	Type	Description
status	String	Specifies the floating IP address status. The value can be ACTIVE, DOWN, or ERROR. DOWN indicates that the floating IP address has not been bound. ACTIVE indicates that the floating IP address has been bound. ERROR indicates that the floating IP address is abnormal.
id	String	Specifies the floating IP address ID.
floating_ip_address	String	Specifies the floating IP address.
floating_network_id	String	Specifies the external network ID.
router_id	String	Specifies the ID of the belonged router.
port_id	String	Specifies the port ID.
fixed_ip_address	String	Specifies the private IP address of the associated port.
tenant_id	String	Specifies the project ID.
dns_name	String	Specifies the DNS name.
dns_domain	String	Specifies the DNS domain.

Example Request

Create a floating IP address whose network is 0a2228f2-7f8a-45f1-8e09-9039e1d09975.

POST https://{Endpoint}/v2.0/floatingips 

{
    "floatingip": {
           "floating_network_id": "0a2228f2-7f8a-45f1-8e09-9039e1d09975"
    }
}

Example Response

Status code: 201

Normal response to POST requests

{
    "floatingip": {
        "id": "b997e0d4-3359-4c74-8f88-bc0af81cd5a2",
        "status": "DOWN",
        "router_id": null,
        "tenant_id": "bbfe8c41dd034a07bebd592bf03b4b0c",
        "project_id": "bbfe8c41dd034a07bebd592bf03b4b0c",
        "floating_network_id": "0a2228f2-7f8a-45f1-8e09-9039e1d09975",
        "fixed_ip_address": null,
        "floating_ip_address": "88.88.215.205",
        "port_id": null,
        "dns_name": "ecs-80-158-78-239",
        "dns_domain": "reverse.domain-name.com",
        "created_at": "2025-03-14T14:53:42",
        "updated_at": "2026-03-23T20:47:41"
    }
}

Status Code

See Status Codes.

Error Code

See Error Codes.

Parent topic: Floating IP Address