Chapter 3. Configuring IP Networking

As a system administrator, you can configure a network interface either using NetworkManager or not.

3.1. Selecting Network Configuration Methods

To configure a network interface using NetworkManager, use one of the following tools:
- the text user interface tool, nmtui. For more details, see Section 3.2, “Configuring IP Networking with nmtui”.
- the command-line tool, nmcli. For more details, see Section 3.3, “Configuring IP Networking with nmcli”.
- the graphical user interface tools, GNOME GUI. For more details, see Section 3.4, “ Configuring IP Networking with GNOME GUI ”.
To configure a network interface without using NetworkManager:
- edit the ifcfg files manually. For more details, see Section 3.5, “Configuring IP Networking with ifcfg Files”.
- use the ip commands. This can be used to assign IP addresses to an interface, but changes are not persistent across reboots; when you reboot, you will lose any changes. For more details, see Section 3.6, “Configuring IP Networking with ip Commands”.
To configure the network settings when the root filesystem is not local:
- use the kernel command-line. For more details, see Section 3.7, “Configuring IP Networking from the Kernel Command line”.