---
title: "attachNetworkInterface"
slug: "cli-vserver-networkinterface-attachnetworkinterface"
tags: ["VPC", "Server"]
updated: 2026-09-17T10:08:33Z
published: 2026-09-17T10:08:33Z
canonical: "cli.ncloud-docs.com/cli-vserver-networkinterface-attachnetworkinterface"
---

> ## 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.

# attachNetworkInterface

Available in VPC

Assign a network interface to a server instance.

## Syntax

The `attachNetworkInterface` syntax is as follows:

```
./ncloud vserver attachNetworkInterface \
    --subnetNo <subnet-no> \
    --networkInterfaceNo <nic-no> \
    --serverInstanceNo <server-instance-no> \
    [--regionCode <KR|SGN|JPN>] \
    [--output <json|xml>]
```

## Options

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

### Required options

The following options are required for `attachNetworkInterface`.

| Options | Type | Required | Description |
| --- | --- | --- | --- |
| `--subnetNo` | String | Required | Subnet number - See [getSubnetList](/docs/en/cli-vpc-subnetmanagement-getsubnetlist). |
| `--networkInterfaceNo` | String | Required | Network interface number - Up to 3 can be assigned, including the default network interface. - See [getNetworkInterfaceList](/docs/en/cli-vserver-networkinterface-getnetworkinterfacelist). |
| `--serverInstanceNo` | String | Required | Server instance number - See [getServerInstanceList](/docs/en/cli-vserver-server-getserverinstancelist). |

### Common options

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

## Examples

If the network interface allocation request is successful, the latest information about the network interface is returned.

### Command

The command example is as follows:

```
./ncloud vserver attachNetworkInterface \
    --subnetNo 23456789 \
    --networkInterfaceNo 56789012 \
    --serverInstanceNo 34567890 \    
    --regionCode KR \
    --output json
```

### Output

The output example is as follows:

```
{
  "attachNetworkInterfaceResponse": {
    "totalRows": 1,
    "networkInterfaceList": [
      {
        "networkInterfaceNo": "56789012",
        "networkInterfaceName": "test-nic-01",
        "subnetNo": "23456789",
        "deleteOnTermination": false,
        "isDefault": false,
        "deviceName": "eth1",
        "networkInterfaceStatus": {
          "code": "SET",
          "codeName": "Configuring"
        },
        "instanceType": {
          "code": "VSVR",
          "codeName": "Server (VPC)"
        },
        "instanceNo": "34567890",
        "ip": "192.0.2.10",
        "macAddress": "F2:20:AF:00:00:01",
        "enableFlowLog": false,
        "accessControlGroupNoList": [],
        "networkInterfaceDescription": "Test network interface",
        "secondaryIpList": [
          "192.0.2.11"
        ]
      }
    ],
    "requestId": "e4f56789-0123-4567-ef01-456789012345",
    "returnCode": "0",
    "returnMessage": "success"
  }
}
```