From Mycomputer Notes

All CLI configuration changes to a Cisco router are made from global configuration mode, which is sometimes called global config. Global config is the primary configuration mode.

Contents 1 Configuring a Router 1.1 Configuring router passwords 1.1.1 Console Password 1.1.2 Virtual Terminal Password 1.1.3 Enable Password

Configuring a Router

A router should be given a unique name as one of the first configuration tasks In order to accomplished this go to the global configuration mode with the following command:

Router(config)#hostname Tokyo Tokyo(config)#

Configuring router passwords

As a best practive restrict access to routers with a password. Passwords should always be configured for virtual terminal (vty) lines and the console line. Passwords are also used to control access to privileged EXEC mode so that only authorized users may make changes to the configuration file.

Console Password

Router(Config)# line console 0
Router(Config)# password cisco
Router(Config)# login

Virtual Terminal Password

Router(Config)# line vty 0 4 (when configuring telenet sessions)
Router(Config)# password cisco
Router(Config)# login

Enable Password

Router(Config)# enable password SanFranciso
Router(Config)# service password-encryption (to encrypt non  encrypted passwords)
Router(Config)# enable secret <password> (will encrypt the password to access the privileged access moded)