> 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/modifyeipbandwidthlimitmode.md).

# ModifyEipBandwidthLimitMode

## 1. API Description

This API (ModifyEipBandwidthLimitMode) is used to modify the bandwidth rate limit mode of the specified elastic IP.

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

* Only EIPs in an available status (`BINDED`, `UNBIND`) support this operation.
* EIPs without bandwidth configured do not support this operation.
* `LOOSE` (relaxed mode) allows short-term bursts exceeding the rate limit; `STRICT` (strict mode) enforces the rate limit strictly without any bursts.
  {% endhint %}

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type                                                                       | Description                  |
| -------------- | -------- | -------------------------------------------------------------------------- | ---------------------------- |
| eipId          | Yes      | String                                                                     | Unique ID of the elastic IP. |
| rateLimitMode  | Yes      | [RateLimitMode](/api-reference/compute/zec/datastructure.md#ratelimitmode) | New rate limit mode.         |

## 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" %}
**1. Modify the bandwidth rate limit mode of an EIP to strict mode.**

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

Request：
{
    "eipId": "<EipId>",
    "rateLimitMode": "STRICT"
}

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.                                               |
| 500              | OPERATION\_DENIED\_EIP\_STATUS\_NOT\_SUPPORT | Operation is not supported for the elastic IP in current status.         |
| 400              | OPERATION\_DENIED\_EIP\_IN\_RISK\_CONTROL    | This operation is not supported for elastic IPs under risk control.      |
| 400              | OPERATION\_DENIED\_EIP\_NO\_BANDWIDTH        | No bandwidth is configured for the EIP. This operation is not supported. |