Cisco Internetworking Operating System

Now a CLI (Command Line Interface), enter the configurations of routers and switches by typing them in, on a console screen. You enter a command, and press (Return - Enter), then do it again for all the following commands. More words can be typed on one line.

Cisco IOS lesson materials include a lot of pictures and step by step instructions that will help you understand all the topics of learning very well, even if not using the network simulator. However, you should learn how to download and free use of the Cisco packet Tracer simulator, because it gives you the opportunity to attend my workshops and obtain the necessary information, you can create your own network design and deeper issues that are important for you.

It is vital to understand the different instructions can be found when configuring a router or switch to be able to know where you are, at any time the configuration mode. In the following lab, you learn to move between the various prompts on a Cisco router. You should check each time your application before changing the configuration of a router. You can go to the levels of the different ways of interacting with interfaces and devices. Most orders are specific mode. This means that multiple commands in a way of working, but not in a different way. That's why we must change the profile, when you want to enter a specific command. However, you can enter the command mode commands in privileged mode global configuration.

Most of the Internetworking Operating System (Cisco IOS), the commands do not need to be fully elucidated. To be able to type commands more quickly, simply transfer the command, more, every word in the command can be abbreviated. For example, the command can be used to reduce I. Another example is the command show running-config. You can just type sh run. Router or switch to identify what you mean, and correctly understand and execute the command. You must type enough letters of the words at the beginning of the switch or router command to identify and correctly interpret what you are trying to do. If you can not comment on that one or more of the words are ambiguous. This happens because the letters of one or more words in the command can be specified in other words, too.

Usually, after making changes to the device you want to keep permanently, so they are not lost after rebooting the device. Your setup runs only in memory and on a normal reboot or power failure, the settings are lost the race. That's why we should keep the run configurations that exist in the DRAM, the boot configurations in NVRAM permanently there. You can save the configuration in NVRAM DRAM using the copy running-config startup-config. Of course, you can also use the keyboard shortcut copy run start.

I hope you have the basis of Cisco IOS