example how to use cisco packet tracer commands

The image below shows the IOS command structure. When configuring the router, we need to understand the format used in configuration. The specific configuration mode commands will be discussed progressively throughout the course. These are entered in the global configuration mode and are used to configure various functions and options on the router such as the interfaces, routing options, console lines among others. There are other specific configuration modes on the router. The list below shows the CISCO IOS modes from the top to bottom. Each mode gives access to certain commands that can be issued. The modes are executed from the top to bottom. The CISCO CLI is structured hierarchically. When the running- configuration is saved, it is stored in the NVRAM and becomes the startup-config. This means that if the router loses power, any unsaved changes in this file will be lost. This file is stored in the RAM or the volatile memory.

Any command that we issue on a router is immediately executed and stored in the running- configuration. The running configuration the operation of the router is determined by the running configuration. Once the router boots up, this file is loaded from the NVRAM to the RAM where it is used as the running configuration file. The startup configuration consists of all the commands we have issued and saved in the router. It is stored in the non-volatile memory which is called the NVRAM. The startup configuration file (startup-config) – this is the file that is used during the startup of the router. There are two types of configuration files on the router. The configuration we make is stored in one of these two types of memory depending on the commands we issue. The router has two types of memory volatile and non-volatile memory. NOTE: the operation of the router depends on the commands that we issue during configuration as well as the IOS functioning.Īs mentioned earlier, the router is a computer and it the configuration we do determines its operation. In this course, we will learn how to configure the two types of VTY lines, either through telnet or the more secure SSL. The administrator can configure the router to be accessed from a remote location using these lines. As the name suggests, the virtual terminal lines are configured as a way to access the router remotely. The third way we can configure a router is by using the virtual terminal lines.

Example how to use cisco packet tracer commands