The following commands are used to show the startup and running configurations on a router.
Router#show startup-config - Displays the startup configuration
Router#show running-config - Displays the running configuration
The following commands is used to show information about the router, including the configuration register value.
Router#show version - Shows information about the router, including the configuration register value
The following command is used by network administrators to determine the route a packet takes through the network to reach its destination.
Router#trace 126.96.36.199 - Send a trace route to IP address 188.8.131.52
The following PING command is used by network administrators to test connectivity to other devices on a network.
Router>ping 184.108.40.206 - Test connectivity to device using IP address 220.127.116.11
The following command is used to reboot a Cisco router or switch.
Router#reload - Restart a router/switch
The following commands are used to enter and exit privileged EXEC mode on Cisco routers or Switches.
Router>enable - Enter privileged EXEC mode
Router#disable - Exit privileged mode to go back to user EXEC mode
Cisco IOS is Cisco System's Internetwork Operating System software that powers its switches and hubs.
Think of Cisco IOS as being similar to Windows on a PC. The PC is the hardware, but you need Windows software to make the PC function.
Cisco IOS has both a command line interface (CLI) and a graphical user interface (GUI).
It is essential that you know both methods of configuring Cisco devices to pass your CCNA exam, in particular the CLI.
We have a free video for you to watch entitled "5 Ways to Learn Cisco IOS".
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