# Net_camera

> This section describes how to use Net camera in OrbbecSDK_ROS2.Currently, only Femto_Mega, Gemini 335Le and Gemini 435Le devices are supported, and other Net devices will be supported in the near future.

You can find example usage code in the [example](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/examples).

## Femto Mega & Gemini 435Le & Gemini 335Le

**Parameter Introduction**

Network device settings: `enumerate_net_device` is set to true, which will automatically enumerate network devices.

If you do not want to automatically enumerate network devices,you can set `enumerate_net_device` to false, `net_device_ip` to the device's IP address, and `net_device_port` to the default value of 8090.

* `enumerate_net_device` : Enable automatically enumerate network devices.
* `net_device_ip` : Setting net device's IP address.
* `net_device_port` : Setting net device's port.Usually, you can set it to 8090.

**Single Net camera**

> If you need to run Gemini 435Le/Gemini 335Le, you only need to replace [femto_mega.launch.py ](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/launch/femto_mega.launch.py)in the run command with [gemini435_le.launch.py](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/launch/gemini435_le.launch.py)/[gemini_330_series.launch.py](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/launch/gemini_330_series.launch.py)

For [femto_mega.launch.py](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/launch/femto_mega.launch.py) as an example:

- **automatically enumerate network devices:**

```bash
ros2 launch orbbec_camera femto_mega.launch.py enumerate_net_device:=true
```

- **Specify IP address to start the device:**

Note: `net_device_ip` needs to be changed to the IP address of the device, here it is 192.168.1.10

```bash
ros2 launch orbbec_camera femto_mega.launch.py enumerate_net_device:=false net_device_ip:=192.168.1.10 net_device_port:=8090
```

**Multi Net camera**

For [multi_net_camera.launch.py](https://github.com/orbbec/OrbbecSDK_ROS2/blob/v2-main/orbbec_camera/examples/net_camera/multi_net_camera.launch.py) as an example:

```bash
ros2 launch orbbec_camera multi_net_camera.launch.py
```

Use `list_devices_node` to inspect connected devices. For its output fields and usage, see [Device Query and Basic Maintenance Tools](../../6_benchmark/device_query_tools.md#list_devices_node).

To directly modify DHCP, persistent IP, Force IP, or DHCP address assignment timeout for network cameras, use [Network Configuration Tools](../../6_benchmark/network_config_tools.md) in Chapter 6.

## Force IP Function

The **Force IP** feature allows you to assign a **static IP address** to a network camera, overriding DHCP settings. This is useful when multiple network cameras are connected, and you need each device to have a fixed IP for reliable communication.

> **Note:** The Force IP configuration **will be reset if the device is powered off or restarted**. You need to reapply the settings after reboot.

**Parameters**

- **`force_ip_enable`** – Enable the Force IP function. **Default:** `false`
- **`force_ip_mac`** – Target device MAC address when multiple cameras are connected (e.g., `"54:14:FD:06:07:DA"`). You can use the `list_devices_node` to find the MAC of each device. **Default:** `""`
- **`force_ip_address`** – Static IP address to assign . **Default:** `192.168.1.10`
- **`force_ip_subnet_mask`** – Subnet mask for the static IP. **Default:** `255.255.255.0`
- **`force_ip_gateway`** – Gateway address for the static IP. **Default:** `192.168.1.1`

**Example Usage**

- **Enable Force IP for a specific device:**

```bash
ros2 launch orbbec_camera gemini_330_series.launch.py \
force_ip_enable:=true \
force_ip_mac:=54:14:FD:06:07:DA \
force_ip_address:=192.168.1.50 \
force_ip_subnet_mask:=255.255.255.0 \
force_ip_gateway:=192.168.1.1 \
net_device_ip:=192.168.1.50 \
net_device_port:=8090
```

> Tip: Make sure the camera is connected and its MAC address is correct before enabling Force IP. Use `list_devices_node` to check the MAC address of all connected cameras.