# Manage Ethernet devices
<a name="config-wrkr-cf-cg-ethernet"></a>

When you installed each AWS Elemental Live in the cluster, you configured eth0. You can now set up eth1 and any additional Ethernet devices. Optionally, you can also bond two devices that you have set up. 

When you installed Elemental Live, you configured eth0 as the management interface. Note that setting up a device as the management interface does *not* dedicate this device to management traffic. The device can still handle other traffic.

**Topics**
+ [Create an Ethernet device](#config-wrkr-cf-cg-ethernet-add)
+ [Modify an Ethernet device](#config-live-ethernet-modify)

## Create an Ethernet device
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To create Ethernet devices use the CLI. For detailed information, see [Using the CLI](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-network_bonding_using_the_command_line_interface) in the Red Hat *Networking Guide*. 

## Modify an Ethernet device
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You must not modify Ethernet devices via the web interface. Instead, use the CLI. For more information, see [Using the CLI](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-network_bonding_using_the_command_line_interface) in the Red Hat *Networking Guide*.

**Warning**  
The **Devices** page on the Elemental Live web interface includes the pencil icon that lets you edit the Ethernet device. However, you must not use the web interface to modify devices because you will break the configuration.