The Cisco command line interface is the primary user interface used for configuring, monitoring, and maintaining Cisco devices. This user interface allows you to directly and simply execute Cisco IOS commands, whether using a router console or terminal, or using remote access methods. The cisco command cheat sheet in PDF format will show you many Cisco CLI commands that will help you with basic configuration of Cisco IOS devices, Cisco command line cheat sheet pages will show you the most used Configuration commands of Cisco, juniper, Nokia and huawei.

All three of the the top vendors in ICT, Cisco, Huawei and Juniper provides us many excellent products.

However, different vendor, different command line.  Every engineer will find that he or she must learn different command line, when operating those different vendor devices. On the IPCISCO official website, will list some essential and basic Commands of cisco, huawei and Juniper, which can help you know the basic differences of commands among Cisco, Huawei and Juniper.