| A | B |
|---|
| show startup-config | displays the configuration stored in NVRAM (the backup configuration) |
| show running-config | displays the active configuration file |
| erase startup-config | deletes the backup configuration file in NVRAM |
| reload | reloads the router, causing it to run through the entire startup process |
| setup | used to enter setup mode from the privileged EXEC prompt |
| write term, write erase & show config | commands used in IOS versions 10.3 and lower |
| the default or previously used answer | what appears in brackets at the end of questions in the setup mode [brackets] |
| Crtl-C | the keys pressed to exit out of the setup mode |
| RAM | working memory; where the active configuration file is stored |
| NVRAM | where backup/startup configuration files are stored |
| Flash | where the IOS image is stored |
| ROM | where bootstrap and power-on diagnostics are stored |
| boostrap & power-on diagnostics | the first step in a router's startup routine |
| opens setup mode to create a simple configuration | this is what the router does if it cannot find a startup configuration in NVRAM |
| configure terminal | configures manually from the console terminal; allows you to enter global mode from the console |
| configure memory | loads configuration information from NVRAM |
| copy tftp running-config | loads configuration information from a network TFTP server into RAM |
| copy running-config startup-config | stores the current configuration from RAM into NVRAM |
| copy running-config tftp | stores the current configuration from RAM on a network TFTP server |
| enable | the command you type to enter privileged EXEC mode |
| global mode | the mode you must be in to enter other, specific modes like interface, line and router modes |
| exit | the command you type to go back one mode level |
| Ctrl-Z | the keys pressed to exit out of all modes and back to privileged mode |
| interface serial 1 | the command used to enter the interface mode for the serial 1 port |
| int e 0 | the command used to enter interface mode for interface ethernet 0 |
| Router(config-if)# | the router prompt for interface mode |
| Router(config-line)# | the router prompt for line mode |
| Router(config)# | the router mode for global configuration mode |
| Router(config-router)# | the router prompt for router mode |
| Router# | the router prompt for privileged EXEC mode |
| DCE | the side of a serial link that normally provides the clocking signal |
| DTE | normally Cisco devices; it does NOT provide a clocking signal |
| clockrate | the command used in a serial interface mode to set a clocking signal |
| bandwidth | the command that overrides the default bandwidth that is displayed in the show interfaces command and is used by some routing protocols such as IGRP |
| router rip | the command used to start RIP routing on the router |
| router igrp | the command used to enable IGRP routing on the router |
| line console 0 | the command used to establish a password on the console terminal (the password that you type to enter user mode when you connect to the router via the console port) |
| line vty 0 4 | the command used to establis password protection on incoming Telnet sessions (the password you type to enter user mode when you telnet into your router through a virtual terminal) |
| enable password | the command used to restrict access to privileged EXEC mode |
| hostname | the command used in GLOBAL mode to change the router's name |
| banner motd | the command used in GLOBAL mode to set a message of the day for your router |
