The actual operation of the router to change the privileged password, restore factory settings, back up configuration files and upgrade the operating system

I. modify the privileged password

(1) build a router on pt

(2) set password

(3) shut down and restart, press ctrl+c to enter rommon during startup

(4) enter privileged mode to set password

(5) continue to enter reload to restart in privileged mode and enter common

2. Restore the factory settings

(1) enter erase startup-confg in privileged mode to restore the factory settings

Back up the configuration files of the router on TFTP

(1) first prepare a router and a server to connect with cross-wire

(2) configure on the router and enter copy running-config tftp in privileged mode to back up the configuration file to tftp

IV. Upgrade the operating system

(1) after the above operation, enter the privileged mode

(2) enter show version in privileged mode to view the current version, and the upgrade is complete.