Examples disclosed herein relate to configuring a network switch. In an example, user-defined configuration data may be included in a startup configuration file of a network switch. A token may be defined in the startup configuration file, wherein the token may represent a command for the network switch. The user-defined configuration data included prior to defining the token may be retained in the startup configuration file. In response to an event to restore factory-default configuration data in the network switch, an option may be provided to apply the user-defined configuration data included prior to the token along with the factory-default configuration data to the network switch. In response to selection of the option, the user-defined configuration data included prior to the token may be applied along with the factory-default configuration data to the network switch.