---
title: "setLoadBalancerInstanceSubnet"
slug: "cli-vloadbalancer-loadbalancer-setloadbalancerinstancesubnet"
tags: ["Load Balancer", "VPC"]
updated: 2026-10-08T05:08:39Z
published: 2026-10-08T05:08:39Z
canonical: "cli.ncloud-docs.com/cli-vloadbalancer-loadbalancer-setloadbalancerinstancesubnet"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://cli.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# setLoadBalancerInstanceSubnet

Available in VPC

Set subnets of load balancers. It configures subnets including the subnets already set. You can add subnets in different zones from the existing subnets.

## Syntax

The `setLoadBalancerInstanceSubnet` syntax is as follows:

```
./ncloud vloadbalancer setLoadBalancerInstanceSubnet \
    --loadBalancerInstanceNo <load-balancer-instance-no> \
    --subnetNoList <subnet-no-list> \
    [--loadBalancerSubnetList <lb-subnet-config>] \
    [--regionCode <KR|SGN|JPN>] \
    [--output <json|xml>]
```

## Options

This section describes the options available when running `setLoadBalancerInstanceSubnet`.

### Required options

The following options are required for `setLoadBalancerInstanceSubnet`.

| Options | Type | Required | Description |
| --- | --- | --- | --- |
| `--loadBalancerInstanceNo` | String | Required | Load balancer instance number - See [getLoadBalancerInstanceList](/docs/en/cli-vloadbalancer-loadbalancer-getloadbalancerinstancelist). |
| `--subnetNoList` | List | Required | Subnet number list - When entered along with `loadBalancerSubnetList`, `loadBalancerSubnetList` is applied. - Select subnets located in the same VPC as the load balancer. - You can select one load balancer-dedicated subnet per zone, including existing subnets. - You can enter multiple items separated by spaces (e.g., `--subnetNoList 23456790 23456791`). - See [getSubnetList](/docs/en/cli-vpc-subnetmanagement-getsubnetlist). |

### Optional options

These are the optional options for `setLoadBalancerInstanceSubnet`. Options that are not specified will use their default values.

| Options | Type | Required | Description |
| --- | --- | --- | --- |
| `--loadBalancerSubnetList` | List | Optional | List of subnets dedicated to load balancers - When entered along with `subnetNoList`, `loadBalancerSubnetList` is applied. - For each subnet, enter {field='value'} pairs enclosed in quotes and separated by commas. - `subnetNo` (conditional): Subnet number. Required when applying `loadBalancerSubnetList`. Select subnets located in the same VPC as the load balancer. See[getSubnetList](/docs/en/cli-vpc-subnetmanagement-getsubnetlist). - `publicIpInstanceNo` (optional): Public IP instance number. If left blank, a new public IP will be created and assigned. Can be set if the load balancer's network type is `PUBLIC`. - You can select one subnet per zone dedicated to the load balancer. |

### Common options

For information about the options common to all `vloadbalancer` subcommands, see [Load Balancer (VPC) options](/docs/en/cli-vloadbalancer#%EC%98%B5%EC%85%98).

## Examples

If the request to configure the load balancer subnet is successful, the configuration information and status of the modified instance are returned.

### Command

The command example is as follows:

```
./ncloud vloadbalancer setLoadBalancerInstanceSubnet \
    --loadBalancerInstanceNo 41112223 \
    --subnetNoList 23456790 23456791 \
    --regionCode KR \
    --output json
```

### Output

The output example is as follows:

```
{
  "changeLoadBalancerInstanceConfigurationResponse": {
    "totalRows": 1,
    "loadBalancerInstanceList": [
      {
        "loadBalancerInstanceNo": "41112223",
        "loadBalancerInstanceStatus": {
          "code": "USED",
          "codeName": "LB USED state"
        },
        "loadBalancerInstanceOperation": {
          "code": "CHANG",
          "codeName": "LB CHANGE OP"
        },
        "loadBalancerInstanceStatusName": "Changing",
        "loadBalancerDescription": "Updated load balancer description",
        "createDate": "2026-07-07T17:12:11+0900",
        "loadBalancerName": "lb-test-01",
        "loadBalancerDomain": "lb-test-01-41112223-16dd7a5738c1.kr.lb.naverncp.com",
        "loadBalancerIpList": [
          "10.0.2.6"
        ],
        "loadBalancerType": {
          "code": "APPLICATION",
          "codeName": "Application Load Balancer"
        },
        "loadBalancerNetworkType": {
          "code": "PRIVATE",
          "codeName": "Private"
        },
        "throughputType": {
          "code": "SMALL",
          "codeName": "Small"
        },
        "idleTimeout": 120,
        "vpcNo": "12345678",
        "regionCode": "KR",
        "accessLogUseYn": "N",
        "subnetNoList": [
          "23456790",
          "23456791"
        ],
        "loadBalancerSubnetList": [
          {
            "zoneCode": "KR-1",
            "subnetNo": "23456790",
            "publicIpInstanceNo": ""
          },
          {
            "zoneCode": "KR-2",
            "subnetNo": "23456791",
            "publicIpInstanceNo": ""
          }
        ],
        "loadBalancerListenerNoList": [
          "60001111"
        ]
      }
    ],
    "requestId": "f6a7b8c9-d0e1-2345-fabc-678901234567",
    "returnCode": "0",
    "returnMessage": "success"
  }
}
```