I have router 1811; I am using CLI; I can sign on but when I want enable command, I don't have password; How do I create one and How do I know I created one already? Thanks,
When you attempt to go to enable mode are you prompted for a password?
If you are you prompted then need to do a password recovery if you don't know your password.
Password recover link below:
You have created an enable password if you have already followed the guides below.
If you are not prompted for one but would like a password set you use the enable secret command
enable secret cisco
This will set a password of cisco for those trying to get into enable mode.
Here is a document on the enable secret command
Here is a document to set the enable password. A little old 12.1, but still applies