1. Configuration Modes and TFTP Honolulu Community College Cisco Academy Training Center Semester 2 Version 2.1

2. Overview 1. Router can be configured from: Console (terminal); NVRAM (memory); TFTP server (network). 2. Router modes: User mode; Privileged mode; Global configuration; Specific configuration modes; Setup Mode; RXBOOT mode.

3. Router Configuration Overview n Router uses configuration file at startup. n Config file customizes the router operation. n If no config file, the system configuration dialog guides you to create one.

4. Using TFTP Server n The configuration file can be stored on a TFTP server. u Command is copy running-config tftp. u Need IP address of the host (TFTP server) u Name the configuration file. n You can download the config file from the TFTP server to the router. u Command is copy tftp running-config. u Need IP address of TFTP server, and config file name.

5. Loading Config from TFTP n Command is copy tftp running-config. u Choice of host or network configuration files. F Host config - for a particular router (there is a default hostname-config file). F Network config - apply to all all routers. u Need IP address of TFTP server, and config file name. n File name convention is UNIX-based.

6. Commands using NVRAM, 11.x n Commands to manage the contents of NVRAM: u erase startup-config - erase the contents of NVRAM. u copy startup-config running-config - load config information from NVRAM u copy running-config startup-config - store the current config in RAM into NVRAM. u show startup-config - display the saved config file, which is in NVRAM.

7. Old Commands using NVRAM n Show config (show start) u displays contents of startup-config in NVRAM. n Write memory (copy run start) u copies contents of running-config to startup- config. n Write erase (erase start) u erases the startup config in NVRAM. n Write term (show run) u displays contents of running-config in RAM. n These commands are used in version 10.3 and earlier, and may not work on newer versions.

8. Configuration Modes n Global config commands: u Affect the system as a whole. u Single line commands & commands to enter a specific configuration mode. n Examples: u router rip will enter the router configuration mode. u int s1 will enter the interface configuration mode. n Exit command will back out one level. n Contrl-Z leaves configuration mode, back to privileged mode.

9. Router Configuration Mode n router rip enters the router config mode, prompt changes to Router(config-router)#. n network [ip address] - specify networks directly connected. Interface Configuration Mode int e1 - enters the interface config mode, prompt changes to Router(config-if)#. n You can now enter: clock rate on the DCE end. bandwidth. ip address and subnet mask.

10. Configuration Process n 1. Make changes. n 2. Examine results. n 3. Intended results? n 4. Save changes to backup. n 5. Examine backup.

11. Password Configuration n Console password: u line con 0 - goes into line configuration mode. u login - apply password to login to router. u password [password] - specify password. n Virtual terminal password: u line vty 0 4 - goes into line configuration mode, specifies number of simultaneous telnet sessions. u login - apply password to login to router. u password [password] - specify password. n Secret password: u enable secret [password]

12. Password Configuration (2) n Enable password: u enable password [password] n AUX (modem) password: u line aux 0 - configuration mode for the aux input. u login - apply password to login to router. u password [password] - specify password. Router Identification n Configuring router identification includes: u router name, hostname [name]. n Message-of-the-day, banner motd # u Enter text, and end with the ‘#’ character.

13. Summary n Configuration modes: u user, privileged, global configuration, specific configuration, setup, and boot modes. n Configuration file: u running-config - in RAM. u startup-config - in NVRAM. n Commands: u config u show run and show start u erase start u copy run start and copy start run

14. Summary (2) n Passwords: u console, aux, virtual terminal (telnet), enable, enable secret. n Router Identification: u hostname u banner motd # - banner message of the day.