The user encrypts Console interface through configuring AAA authentication, and then the password is forgotten. The device cannot log through Console interface.
When the device is restarted, press and hold Ctrl+B and enter into Bootrom menu, choose 6.Set configuration file for system and change previous started file Vrpcfg.zip as Paf.txt. Restart the device. There is no configuration after the device is started. Change started configuration file as Vrpcfg.zip. Re-record the previous configuration and save it, the problem can be solved.
Do not easily encrypt Console interface. If it is encrypted, the password should be saved properly.