How to Configuring a Cisco Router

Configuring a Cisco Router:

[i] Set up Mode

You actually have two options when using setup mode : Basic management And Extended Setup. Basic management only gives you enough configurations to allow connectively to the router, where as Extended Setup allows you to configure some global parameters as well as interface configuration parameters.

 … System Configuration Dialog – - -

Would you like to enter the initial configuration dialog?

[yes /no]:y

At any point you may enter a question mark ‘?’for help. Use ctrl+c to abort configuration dialog at any prompt. Default settings are I square are in brackets ‘[]’.

Basic management Setup configures only enough connectivity for management of the system; Extended Setup will ask you to configure each interface on the system. Would you like to enter basic management setup?

[yes/no]:n

First would you like to see the current interface summary?

[yes]:return

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[o]Go to the IOS command prompt without saving the config.

[1] Return back to the setup without saving the config.

[2] Save the configuration to nvram and exit.

Enter your selection [2] :0

The interesting part of the extended Setup of the options you get at the end. You can go to CLI mode and discard the running–config [0] ;You can go back to setup to do it all over again [1];or you can save this configuration to NVRAM, which is known as startup config. This file would then be loaded every time the router is rebooted. I chose “O” to go to the IOS and not save the file we created. This will take us to the CLI.

[ii]Command –line Interface

The Command- Line Interface (CLI) is really the best way to configure a router because it gives you the most flexibility. To use the CLI, just say no to entering the Initial Configuration Dialog. After you say no, the router will come back with messages stating the status of all the router interfaces. Would you like to enter the  initial configuration dialog?

Would you like to terminate auto install ? [yes]:return

Press RETURN to get started!

00:00:42: %LINK -3-UPDOWN: Interface Ethernet0, changedstate to up

00:00:42: %LINK -3-UPDOWN:Interface Serial0, changedstate to down

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