Figure 6-1 shows the network topology for the configuration that follows, which shows a basic router configuration using the commands covered in this chapter.
 Router>en  | Enters privileged mode  | 
Router#clock set 18:30:00 15 Nov 2004  | Sets local time on router  | 
Router#config t  | Enters global config mode  | 
Router(config)#hostname Boston  | Sets router name to Boston   | 
Boston(config)#no ip domain-lookup  | Turns off name resolution on unrecognized commands (spelling mistakes)  | 
Boston(config)#banner motd #  | Creates an MOTD banner  | 
This is the Boston Router.  |   | 
Authorized Access Only  |   | 
#  |   | 
Boston(config)#clock timezone EST 5  | Sets time zone to Eastern Standard Time (5 from UTC)  | 
Boston(config)#enable secret cisco  | Enables secret password set to cisco   | 
Boston(config)#service password-encryption  | Passwords will be given weak encryption  | 
Boston(config)#line con 0  | Enters line console mode  | 
Boston(config-line)#logging sync  | Commands will not be interrupted by unsolicited messages  | 
Boston(config-line)#password class  | Sets password to class  | 
Boston(config-line)#login  | Enables password checking at login  | 
Boston(config-line)#line vty 0 4  | Moves to virtual Telnet lines 0 through 4  | 
Boston(config-line)#password class  | Sets password to class   | 
Boston(config-line)#login  | Enables password checking at login  | 
Boston(config-line)#line aux 0  | Moves to line auxiliary mode  | 
Boston(config-line)#password class  | Sets password to class   | 
Boston(config-line)#login  | Enables password checking at login  | 
Boston(config-line)#exit  | Moves back to global config mode  | 
Boston(config)#no service password-encryption  | Turns off password encryption  | 
Boston(config)#int fa 0/0  | Moves to Fast Ethernet 0/0 mode  | 
Boston(config-if)#desc Engineering LAN  | Sets locally significant description of the interface  | 
Boston(config-if)#ip address 172.16.10.1 255.255.255.0  | Assigns IP address and subnet mask to the interface  | 
Boston(config-if)#no shut  | Turns on the interface  | 
Boston(config-if)#int s0/0  | Moves directly to Serial 0/0 mode  | 
Boston(config-if)#desc Link to Buffalo Router  | Sets locally significant description of the interface  | 
Boston(config-if)#ip address 172.16.20.1 255.255.255.0  | Assigns IP address and subnet mask to the interface  | 
Boston(config-if)#clock rate 56000  | Sets a clock rate for serial transmission. DCE cable must be plugged into this interface  | 
Boston(config-if)#no shut  | Turns on the interface  | 
Boston(config-if)#exit  | Moves back to global config mode  | 
Boston(config)#ip host buffalo 172.16.20.2  | Sets a local host name resolution to IP address 172.16.20.2  | 
Boston(config)#exit  | Moves back to privileged mode  | 
Boston#copy run start  | Saves running-config to NVRAM  |