> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/api-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/api-reference/compute/zec/elastic-ip/changeeipbindtype.md).

# ChangeEipBindType

## 1. API Description

This API (ChangeEipBindType) is used to change elastic IP mode.

{% hint style="info" %}
**Notes**

* Only elastic IPs bound to a vNIC or HaVip support this operation.
* To change the elastic mode, backend configuration is required. Please contact Console Support.
  {% endhint %}

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type                                                             | Description                                                                                                            |
| -------------- | -------- | ---------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| eipId          | Yes      | String                                                           | ID of elastic IP.                                                                                                      |
| bindType       | Yes      | [BindType](/api-reference/compute/zec/datastructure.md#bindtype) | <p>Bind type.</p><p>Only effective when the elastic IP is bound to a vNIC or HaVip.</p><p>Default value: NAT mode.</p> |

## 3. Output Parameters

| Parameter Name | Type   | Description                                                                                                           |
| -------------- | ------ | --------------------------------------------------------------------------------------------------------------------- |
| requestId      | String | <p>The unique request ID, which is returned for each request.</p><p>RequestId is required for locating a problem.</p> |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Change elastic IP mode.**

```json
POST /api/v2/zec HTTP/1.1
Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: ChangeEipBindType
<Common Request Params>

Request：
{
    "eipId": "<eipId1>",
    "bindType": "FullNat"
}

Response：
{
  "requestId": "T05992D0C-7E8B-4047-B0C0-780F2CD549D3",
  "response": {
    "requestId": "T05992D0C-7E8B-4047-B0C0-780F2CD549D3"
  }
}
```

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](/api-reference/api-introduction/toolkit/api-sdk.md)，to make it easier for you to call APIs. More programming languages will be supported.

## 6. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see [Common Error Codes](/api-reference/api-introduction/instruction/commonerrorcode.md).

| HTTP Status Code | Error Code                                          | Description                                                                 |
| ---------------- | --------------------------------------------------- | --------------------------------------------------------------------------- |
| 404              | INVALID\_EIP\_NOT\_FOUND                            | Elastic IP does not exist.                                                  |
| 400              | OPERATION\_DENIED\_EIP\_NOT\_ASSIGNED               | Elastic IP is not bound.                                                    |
| 400              | OPERATION\_DENIED\_EIP\_NOT\_ASSIGN\_NIC\_OR\_HAVIP | Modifying the EIP binding method only supports EIPs bound to the NIC/HaVip. |