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Modes Configuration Cisco IOS

Cisco devices that run IOS software configured on the command line (CLI command line interface) connection to the console port or telnet the device.

For safety reasons, there are two levels of access:

User mode
- serves checking device status, it is not possible to make changes in the configuration.
Privileged mode - used for device configuration, possible access to all commands.

The instrument is configured in modes:

User Exec mode

The first mode to get the device's User Exec mode, which has the following prompt:
Router>

Privileged mode Exec

In Privileged Exec mode enters the command enable the user exec mode and entering the enable password if it is the same set up. From Privileged mode comes with the command exit. Below shows an example of using these commands:

Figure 1.

Modes Configuration Cisco Router

Router> enable
Password: [Enable password]
Router # exit
Router>


Other commands privileged level of Cisco IOS are hierarchically structured. To successfully configure the device it is important to understand that hierarchy. The following figure is a schematic representation of some IOS commands.

Help on Cisco Router

Cisco IOS Help is a useful aid for new users, because at any moment can command? call for help. Help can be used in two ways:

The first way is to find out what all the commands beginning in some part of the word. Below shows an example of using these commands:

Router # co?
configure connect copy


Another way is to print all of commands for each mode command line. Below shows an example of using these commands:

Router # configure?
memory Configure from NV memory
network Configure from a TFTP network host
overwrite-network Overwrite NV memory from TFTP network host
terminal Configure from the terminal
<cr>

Hot-Keys in Cisco IOS

Cisco IOS offers several short for editing functions. Listed below are the abbreviations and their functions:

Delete - deletes one character to the right of the cursor.
Backspace - Deletes one character to the left of the cursor.
TAB - ends with an incomplete command.
Ctrl-A - moves the cursor to the beginning of the line.
Ctrl-U - erases the entire line.
Ctrl-W - deletes the word.
Ctrl-Z - comes in Privileged EXEC mode.
Up Arrow - call the previous command.
Down Arrow - call the following commands.

Perhaps the best way to see the Cisco IOS - CLI is easy to look at the configuration of the router with explanations of each command:

Router> enable // enter the privileged EXEC mode//
Router # configure terminal  // enter the global configuration level//
Router (config) # enable secret cisco // sets the enable password on the router//
Router (config) # ip route 0.0.0.0 0.0.0.0 20.2.2.3 // set static IP route//
Router (config) # interface Ethernet0  // entry to configure Ethernet0 interface and//
Router (config-if) # ip address 10.1.1.1 255.0.0.0 // set the IP address on Ethernet0 interface in//
Router (config-if) # no shutdown // activated interface Ethernet0//
Router (config-if) # exit // return to global configuration mode//
Router (config) # interface Serial0 // entry to configure Serial0 interface and//
Router (config-if) # ip address 20.2.2.2 255.0.0.0 // set the IP address on Ethernet0 interface in//
Router (config-if) # no shutdown // activated serial0 (interface)//
Router (config-if) # exit // return to global configuration mode//
Router (config) # router rip // configure RIP routing protocol//
Router (config-router) # network 10.0.0.0 // adds network 10.0.0.0//
Router (config-router) # network 20.0.0.0 // adds network 20.0.0.0//
Router (config-router) # exit // return to global configuration mode//
Router (config) # exit // exits the configuration mode//
Router # copy running-config startup-config // recording configuration in NVRAM//
Router # disable // exits the Privileged Exec mode//
Router>