For network devices, clearing configuration information is the best way to prevent hackers from easily connecting to and accessing your company network. Today, I will teach you how to clean up internal data on routers and switches.
When cleaning a Cisco router, there are two different methods to choose from, and they are typically used for different scenarios:
1. If You Know the Router Password, Follow These Steps:
(1) Log in to the router and enter the enable command to enter privileged EXEC mode. In this mode, enter the enable password command.
(2) Enter the configure terminal command to enter global configuration mode.
(3) Enter the config-register 0x2142 command.
(4) Enter the end command, then enter the write erase command to delete the router’s current startup configuration.
(5) Enter the reload command to restart the router. When the system asks if you want to save the configuration, choose no.
After the router finishes restarting, all parameters will be restored to the factory default settings.
2. Setting the Configuration Register Value to 0x2142 鈥?Most Network Administrators Use This Method for Password Recovery, But All Configuration Information Will Also Be Cleared During This Process. The Entire Procedure Is as Follows:
(1) Log in to the router and enter the enable command to enter privileged EXEC mode. In this mode, enter the enable password command.
(2) Enter the configure terminal command to enter global configuration mode.
(3) Enter the config-register 0x2142 command (this operation will cause the router to ignore the startup configuration on the next reboot).
(4) Enter the end command, and at the router # prompt mode, enter the reload command to restart the router.
(5) The system will ask whether to save the configuration information. Enter no and