| 3.1 |  | Configuring a Router |
| 3.1.4 |  | Examining the show commands |

| There are many show commands that can be used to examine the contents of files in the router and for troubleshooting. In both privileged EXEC and user EXEC modes, the command show ? provides a list of available show commands. The list is considerably longer in privileged EXEC mode than it is in user EXEC mode. show interfaces – Displays all the statistics for all the interfaces on the router. To view the statistics for a specific interface, enter the show interfaces command followed by the specific interface and port number. For example: Router#show interfaces serial 0/1 show controllers serial – Displays information-specific to the interface hardware show clock – Shows the time set in the router show hosts – Displays a cached list of host names and addresses show users – Displays all users who are connected to the router show history – Displays a history of commands that have been entered show flash – Displays information about flash memory and what IOS files are stored there show version – Displays information about the router and the IOS that is running in RAM show ARP – Displays the ARP table of the router show protocol – Displays the global and interface specific status of any configured Layer 3 protocols show startup-configuration – Displays the saved configuration located in NVRAM s how running-configuration – Displays the configuration currently running in RAM
| Lab Activity Lab Exercise: Using Router show Commands This lab is to become familiar with the basic router show commands.
| Lab Activity e-Lab Activity: On by Default This lab is to view the basic configuration and interface details to see the router defaults .
| Web Links Cisco IOS Command Reference, Release 12.2 http://www.cisco.com/en/US/products/sw/ iosswrel/ps1835/products_product_ index09186a00800f2604.html#31928