Clearing a Configuration File
You can clear the configuration file that is loaded at the current startup of the system. This section describes how to clear the configuration file that has been loaded to a device and how to delete configurations from an interface at a time.
Context
The configuration file needs to be cleared in either of the following situations:
- The system software does not match the configuration file after the router is upgraded.
- The configuration file is damaged or an incorrect configuration file is loaded.
Procedure
- Clear the currently loaded configuration file.
The configuration file loaded at the current startup is cleared.
Before clearing the configuration file of the router, the system compares the configuration file loaded at the current startup with that to be loaded at the next startup.
- If the two configuration files are the same, running this command clears both of them. To ensure that a configuration file is available at the next startup, you must specify a configuration file on the router.
- If the two configuration files are different, running this command clears only the configuration file loaded at the next startup.
- If the configuration file loaded at the current startup of the router is empty and this command is run, the system displays a message, indicating that the configuration file does not exist.
Exercise caution when running this command. If this command is required, run it with assistance from Huawei technical support personnel.
- Delete all configurations from an interface at a time.
This configuration process is supported only on the Admin-VS.
You can delete configurations from an interface at a time using either of the commands listed in Table 1.
Table 1 Deleting all configurations from an interface at a time View
Command
Description
Precautions
System view
clear configuration interface interface-type interface-number
Deletes all configurations from a specified interface. Note that the command is run in the system view, and you need to remember the type and number of the interface whose configurations are to be deleted.
Exercise caution when running either command.
Interface view
Deletes all configurations from the current interface at a time.NOTE:You cannot run this command in the controller interface view.
- Delete the default configuration file.
Run reset default-configuration
The default configuration file on the device is deleted.
Exercise caution when running this command. If this command is required, run it with assistance from Huawei technical support personnel.
- Delete the non-activated configuration data of the unregistered chassis and absent boards.