Learning about Cisco Router Configurations

  • The first step in configuring a Cisco router is to build a console session. The console session is made by connecting the console port on the router with the COM 1 port on the PC.
  • After that activates terminal emolution, which is commonly used on Windows OS is hyperterminal (configuring the router via Minicom on Linux). Activate hyperterminal, make sure the selected port is COM1, then configure it like:
    Bits per second: 9600 bps
    Data bits: 8
    Parity: none
    Stop bits: 1
    Flow control: none
  • Then turn on the power on router, and it will start the boot up process. After the boot up process is complete, the router displays a notification “Would you like enter the initial configuration dialog?” Answer “no”. After that the router will display a notification “Press return to get start“. For the next process, press the “Enter” button. A router that has not been configured, will display the prompt “router>” The command: we are in the operating mode of the user EXEC. To start configuration, type “enable” as in the following example:
    Router> enabled
    Router #
  • In EXEC privileged operating mode, configuration is done in global configuration mode, meaning that the configuration in this mode affects all systems. Previously we were in privillege EXEC mode, to switch to global configuration mode the command is:
    Router # config terminal or
    Router # conf t

The basic configuration that needs to be done is:

  • Hostname
    Function gives a name to the router
    Syntax:
    router (config) #hostname the name of the router that was created, for example the name of the router that was made cisco, the form of the command:
    router (config) #hostname cisco
    cisco (config) #
  • Enable password
    Function activates the command enable password
    Syntax:
    cisco (config) #enable password password that is created, for example a password that is made cisco, the form of the command:
    cisco (config) #enable password cisco
  • Enable secret
    Functioning activates the secret word in the enable command, its function is the same as the enable password command, but enable secret has a higher priority and secret word in encrypted form.
    Syntax:
    cisco (config) #enable secret the secret word is created, for example the secret word that is created is a class, the command is:
    cisco (config) #enabel secret class
  • Console line
    Function activates passwords in the line console, so that only users who have my password can access the router via the line console. Routers only have one line console.
    cisco (config) #line console 0
    cisco (config-line) # password word-password created
    cisco (config-line) # exec-timeout 5
    cisco (config-line) #login
  • Auxiliary line
    It functions to activate the password in the aux line, so that only users who have my password can access the router via line aux. The router only has one aux line.
    cisco (config) #line aux 0
    cisco (config-line) # password word-password created
    cisco (config-line) # exec-timeout 5
    cisco (config-line) #login
  • Line Virtual Terminal
    Functioning activates the password on the virtual terminal line, so that only users who have my password can access the router via the virtual terminal line. The router only has 5 virtual terminal lines (vty).
    cisco (config) #line vty 0 4
    cisco (config-line) # password word-password created
    cisco (config-line) # exec-timeout 5
    cisco (config-line) #login

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