(When you enter your router and find that you are rejected, do you feel very depressed? Do you feel headache about password setting? (the setting is too complex, easy to forget, too simple and afraid of theft.) Today, I will introduce a command that can solve the password problem without effort (for Cisco routers, other routers have not tried)! Of course, you need some basic knowledge to understand this article. If you don't understand it, you can contact me again!!)