Which global IOS command encrypts all passwords in the running configuration?

The service password-encryption command is a global configuration command that encrypts all plaintext passwords currently in the running configuration and any future plaintext passwords added. This includes passwords configured with the password command, such as console, VTY, and enable passwords. It uses a weak, reversible encryption (Type 7), so it's primarily for preventing casual viewing. enable password-encryption is not a valid IOS command. enable secret configures a strong, one-way encrypted password for privileged EXEC mode, but it does not encrypt other passwords in the configuration. password-encrypt is not a valid IOS command.