| A | B |
|---|
| External Configuration devices | console port, WAN/LAN links, Auxiliary port, TFTP server |
| Router Startup Sequence | bootstrap,IOS, Command Exec,Active configuration,tables,buffers |
| Router> | User exec mode. Read only mode. |
| Router# | Priviledged Exec Mode. Debugging and testing. |
| Router(config)# | Global Configuration Mode. |
| Router(config-mode)# | Other Configuration Mode for complex and multiple line configurations |
| SETUP mode | setup initial configuration |
| RXBOOT mode | Recovery from catastrophe (lost passwords or erased Flash) |
| configuration of the system hardware, the software version,the names of the sources of configuration files, and the boot image | show version |
| Displays the backup configuration file | show startup-config; show start |
| Shows information about the Flash memory device | show flash |
| Displays statistics for all interfaces configured in the router | show interfaces |
| Displays information about the active processes | show processes |
| Displays the configured layer 3 protocols | show protocols |
| Displays active configuration file | show running-config; show run |
| show memory | shows statistics about the router's memory, including memory free pool statistics |
| show stacks | Monitors the stack use of processes and interrupt routines and displays the reason for the last system reboot. |
| show buffers | statistics for the buffer pools on the router. |
| end Telnet session | exit or logout |
