Cool Cisco IOS Commands - default interface - Part 1 of 2
The default command is a general-purpose command that is not limited to interfaces; it resets defaults based on the command name that follows it. Use the default interface command when you need to remove any configuration for a specified interface and reset the interface to its default values.
The default interface command is a great way to reset an interface to its default configuration. You will need to be in configuration mode in order to issue this command. You can combine default interface with the interface range command on Cisco switches to set multiple interfaces to their default configuration with a single command.