---
title: Device Discovery (Network)
slug: bhdo-v1/device-discovery-network
createdAt: 2022-05-13T19:50:33.000Z
---

The device discovery service scans the network and returns a list of devices it finds. This allows you to easily find Belden Horizon Data Operations devices and copy their IP addresses.

- Discovery is disabled on all interfaces by default. You can enable it at any time.
- Once enabled, Discovery scans all network addresses at one-second intervals. It may take time to scan an entire network.
- Scanning doesn't stop until it is disabled. If a device is not recognized after ten minutes, it is removed from the list.

To search for devices that are specific to device protocols and drivers, use the [Device Discovery Tool](docId\:AdQx2bFbzywvhAjd2Blor). 

:::hint{type="warning"}
**Important**: Belden Horizon Data Operations enforces restrictions to prevent the following issues.

- **Security Alerts**: Because discovery regularly scans the network, security systems (such as Trojan detection systems) might flag this activity. To avoid security warnings, network scans are limited to one-second intervals, and devices are removed from the list after ten minutes of inactivity.
- **Missing Devices**: Discovery only supports subnet / 24 networks to limit the number of nodes to discover. This restriction prevents discovery from taking longer than ten minutes for each device.
:::

# Access Device Discovery UI

You can access *Device Discovery *from the *DeviceHub*. 

**To access Device Discovery:**

1. Log in to Belden Horizon Data Operations.
2. From the Navigation panel, navigate to **DeviceHub **>** Device Discovery**.

   The *Device Discovery* pane appears listing all the Ethernet interfaces.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/mgY6ylwHZYIiB0b1AIvwZ_device-discovery-ui.png" size="80" width="1094" height="484" caption="Device Discovery pane" position="center" showCaption="true"}