When you happen to be getting began on your CCNA reports, mastering the different router modes is key to passing your Intro and ICND exams. But maintaining these modes straight can be extremely tough. (At least it was for me!) Let’s take a look at the different router modes you are going to need to know about to pass your CCNA, and use IOS Assist to illustrate the various utilizes of every single mode.
The 1st mode you’ll see on a router (if the individual ahead of you logged off as they ought to have) is user exec mode. This is also the default mode an user is placed into when making use of Telnet to connect to a router. The prompt will appear like this:
R1>
You cannot write or add to a configuration in this mode, but you can run quite a few show commands. This is a great mode to have customers in who need to have to see the configuration, but should not be permitted to adjust it.
To get to the subsequent level, type enable at the user exec prompt:
R1>enable
R1#
Notice that the prompt changed. This mode has two names, the official a single getting privileged exec mode. It really is much more commonly referred to as enable mode, because “enable” is what you type to get into this mode.
This mode provides you a lot more possibilities for show and other commands, but you still can not configure anything. To configure worldwide commands, use “configure terminal”, or “conf t”, to enter worldwide configuration mode.
R1#conf t
Enter configuration commands, one per line. Finish with CNTL/Z.
R1(config)#
The prompt has changed yet again, and now worldwide configuration commands such as hostname and no ip domain-lookup can be entered.
From here, you have got a lot of options, but we’ll look at three you require to know for your CCNA exams. To apply configuration commands to an interface, enter interface configuration mode, as shown right here:
R1(config)#interface serial0
R1(config-if)#
You must be in worldwide config mode to get into interface config mode you can’t go from enable mode straight to interface configuration mode.
R1#interface serial0
^
% Invalid input detected at ‘^’ marker.
Interface configuration mode permits you to apply an IP address to the interface, as properly as numerous other commands connected to frame relay, ISDN, and dynamic routing protocols.
For the CCNA, you require to know about two other configuration modes. To configure console commands (such as password protection), enter line configuration mode as shown right here:
R1#conf t
Enter configuration commands, one per line. Finish with CNTL/Z.
R1(config)#line console
R1(config-line)#password cisco
R1(config-line)#login
The prompt “(config-line)” indicates that you are in line configuration mode. Your console line is not the only line you will be configuring for the CCNA, though your vty lines are employed for incoming telnet connections and need to be configured in an equivalent style.
R1#conf t
Enter configuration commands, 1 per line. End with CNTL/Z.
R1(config)#line console
R1(config-line)#password cisco
R1(config-line)#login
R1(config-line)#line vty 4
R1(config-line)#password cisco
R1(config-line)#login
Notice that you do not have to exit a single interface mode to go to one more one. Let’s say that you’ve configured your vty lines and now want to place an IP address on your Ethernet interface. You don’t have to go out with ctrl-z and then start once more you can go straight to interface config mode from line config mode. Just make certain you see the prompt alter!
R1(config-line)#line vty 4
R1(config-line)#password cisco
R1(config-line)#login
R1(config-line)#interface ethernet0
R1(config-if)#ip address 15.1.1.1 255.255.255.
When you happen to be preparing for CCNA exam success, there is a lot to absorb. Just take it a single piece at a time, get some hands-on encounter to go with your theory, and prior to you know it you happen to be moving around in the various Cisco router configuration modes without having providing it a second thought. Preserve studying and your CCNA exam accomplishment is assured!
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