How to change the order of the network cards (eth1 <-> eth0) on linux

 

How to Change the Order of Network Cards on Linux

Introduction

Are you struggling with the order of your network cards on Linux? Don't worry, we've got you covered! In this article, we will guide you through the process of changing the order of network cards (eth1 <-> eth0) on Linux. By following our step-by-step instructions, you'll be able to rearrange your network cards efficiently.

Understanding Network Cards

Before we dive into the process, let's take a moment to understand what network cards are. Network cards, also known as network interfaces or NICs (Network Interface Cards), are hardware components that allow your computer to connect to other devices and networks. These cards enable data transmission between your computer and the internet or other local network devices.

Identifying Network Cards

To change the order of network cards, we first need to identify them. Follow the steps below:

  1. Open a terminal window on your Linux machine.
  2. Type the command ifconfig -a and press Enter.

This command will display a list of network interfaces along with their configurations. Take note of the names of the network interfaces you wish to reorder.

Modifying Network Card Names

Once you have identified the network cards, you can proceed with modifying their names. Follow the steps below:

  1. Open a terminal window on your Linux machine.
  2. Type the command sudo nano /etc/udev/rules.d/70-persistent-net.rules and press Enter.

This command will open a file that contains the persistent network rules.

  1. Locate the lines that correspond to the network cards you want to modify.
  2. Update the names of the network interfaces according to your desired order. For example, change eth0 to eth1 and eth1 to eth0.

Make sure to save the changes before proceeding to the next step.

Restarting Network Services

After modifying the network card names, we need to restart the network services for the changes to take effect. Follow the steps below:

  1. Open a terminal window on your Linux machine.
  2. Type the command sudo service networking restart and press Enter.

This command will restart the networking services, allowing the system to recognize the new order of the network cards.

Verifying the Changes

To ensure that the changes have been successfully applied, follow the steps below:

  1. Open a terminal window on your Linux machine.
  2. Type the command ifconfig -a and press Enter.

You should now see the updated order of the network cards reflected in the output.

Conclusion

In this article, we have walked you through the process of changing the order of network cards on Linux. By following our instructions, you can easily modify the names of network interfaces and rearrange them according to your needs. Remember to save the changes and restart the network services for the modifications to take effect. Now you can confidently manage the order of your network cards on Linux. Happy networking!

Note: Changing the order of network cards may affect network configurations and connectivity. Ensure proper testing and backup before making any changes.

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