> 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/vpc-network/cross-region-bandwidth/modifycrossregionbandwidth.md).

# ModifyCrossRegionBandwidth

## 1. API Description

This API (ModifyCrossRegionBandwidth) is used to modify the configurations of the cross-region bandwidth.

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

* <mark style="color:blue;">If the network billing model is</mark> <mark style="color:blue;">`ByBandwidth`</mark><mark style="color:blue;">, the new bandwidth cap must be different from the original one.</mark>
* <mark style="color:blue;">If the network billing model is</mark> <mark style="color:blue;">`ByInstanceBandwidth95`</mark><mark style="color:blue;">, one of the bandwidth commitment and the burst bandwidth must be modified at least. If the burst bandwidth is not specified, it is not changed by default.</mark>
  {% endhint %}

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name         | Required | Type    | Description                                                                                          |
| ---------------------- | -------- | ------- | ---------------------------------------------------------------------------------------------------- |
| crossRegionBandwidthId | Yes      | String  | Cross-region bandwidth ID.                                                                           |
| bandwidth              | Yes      | Integer | <p>Bandwidth cap.</p><p>Value range: \[1, +)</p>                                                     |
| bandwidthCap           | No       | Integer | <p>Burst bandwidth.</p><p>Unit: Mbps.</p><p>Available range: \[1, +).</p><p>Value range: \[1, +)</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" %}
**1. For a cross-region bandwidth with the network billing model of `ByBandwidth`, modify the bandwidth cap to 500 Mbps.**

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

Request：
{
  "crossRegionBandwidthId": "<your cross id>",
  "bandwidth": 500
}

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

**2. For a cross-region bandwidth with the network billing model of `ByInstanceBandwidth95`, modify the bandwidth commitment to 500 Mbps and the burst bandwidth to 1000 Mbps.**

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

Request：
{
  "crossRegionBandwidthId": "<your cross id>",
  "bandwidth": 500,
  "bandwidthCap": 1000
}

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

**3. For a cross-region bandwidth with the network model of `ByInstanceBandwidth95`, modify the bandwidth commitment to 500 Mbps and leave the burst bandwidth unchanged.**

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

Request：
{
  "crossRegionBandwidthId": "<your cross id>",
  "bandwidth": 500
}

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

**4. For a cross-region bandwidth with the network model of `ByInstanceBandwidth95`, modify the burst bandwidth to 1000 Mbps and leave the bandwidth commitment unchanged.**

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

Request：
{
  "crossRegionBandwidthId": "<your cross id>",
  "bandwidthCap": 1000
}

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\_VPC\_BANDWIDTH\_NOT\_FOUND       | Cross-region bandwidth does not exist.                 |
| 400              | OPERATION\_DENIED\_VPC\_BANDWIDTH\_STATUS | Cross-region bandwidth state does not allow operation. |


---

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