doc-exports/docs/eip/api-ref/eip_openstackapi_0009.html

Updating a Floating IP Address

Function

This API is used to update a floating IP address.

During the update, the ID of the floating IP address must be provided in the URL.

If port_id is left blank, the floating IP address has been unbound from the port.

This API has the following constraints:

• If a floating IP address that you are binding is in the error state, unbind the IP address first.
• Do not associate a port that has a floating IP address associated to another floating IP address. You must first disassociate the port from the IP address and then associate it with another IP address.
• This API cannot be used to bind an EIP to or unbind an EIP from a dedicated load balancer.

• 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

PUT /v2.0/floatingips/{floatingip_id}

Table 1 describes the parameters.

Table 1 Parameter description

Parameter	Mandatory	Type	Description
floatingip_id	Yes	String	Specifies the floating IP address ID. This parameter is not required when you assign a floating IP address. This parameter is mandatory when you query, update, or delete a floating IP address.

Request Parameters

Table 2 Request parameter

Parameter	Type	Mandatory	Description
floatingip	floatingip object	Yes	Specifies the floating IP address list. For details, see Table 3.

Table 3 floatingip objects

Parameter	Mandatory	Type	Description
port_id	No	String	Specifies the port ID. Leaving this parameter blank does not unbind the EIP from the dedicated load balancer.

Response Parameters

Table 4 Response parameter

Parameter	Type	Description
floatingip	floatingip object	Specifies the floating IP address list. For details, see Table 5.

Table 5 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.
created_at	String	Specifies the time (UTC) when the floating IP address is created. Format: yyyy-MM-ddTHH:mm:ss
updated_at	String	Specifies the time (UTC) when the floating IP address is updated. Format: yyyy-MM-ddTHH:mm:ss

Example Request

• Unbind a floating IP address from a port.

  PUT https://{Endpoint}/v2.0/floatingips/b997e0d4-3359-4c74-8f88-bc0af81cd5a2
  
  {
      "floatingip": {
          "port_id": null
      }
  }

• Bind a floating IP address to a port. The port ID is f91f5763-c5a2-4458-979d-61e48b3c3fac.

  PUT https://{Endpoint}/v2.0/floatingips/b997e0d4-3359-4c74-8f88-bc0af81cd5a2 
   
  {
      "floatingip": {
             "port_id": "f91f5763-c5a2-4458-979d-61e48b3c3fac"
      }
  }

Example Response

Status code: 200

(The floating IP address is unbound from the port.)

{
    "floatingip": {
        "id": "b997e0d4-3359-4c74-8f88-bc0af81cd5a2",
        "status": "DOWN",
        "router_id": null,
        "tenant_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"
    }
}

(The floating IP address is bound to the port.)

{
    "floatingip": {
        "id": "b997e0d4-3359-4c74-8f88-bc0af81cd5a2",
        "status": "DOWN",
        "router_id": null,
        "tenant_id": "bbfe8c41dd034a07bebd592bf03b4b0c",
        "floating_network_id": "0a2228f2-7f8a-45f1-8e09-9039e1d09975",
        "fixed_ip_address": "192.168.10.3",
        "floating_ip_address": "88.88.215.205",
        "port_id": "f91f5763-c5a2-4458-979d-61e48b3c3fac",
        "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