Today, when such interactive communication media as wireless devices of the Internet are rapidly developing, people in consumer and in b2b sectors have a great demand for corresponding and reliable telecommunication and LAN hardware solutions. Many companies enter this industry in the attempt to meet that demand and to win the market with their products. However, only a few of them can boast of the same level of success as Cisco Systems.

The Cisco Systems Company was founded back in 1984 and since that time it has won a tremendous success and became one of the world's leading Internet hardware technology companies. Among the products of Cisco Systems there are IP technology products, switches, routers and firewalls. The revenue of this company comes up to twenty five billion dollars. The products of Cisco Systems provide both their consumer and business-to-business clients with a high level of reliability, security and excellent innovative technology solutions. In fact, Cisco security programs are known wide as one of its products' main features and advantages. Moreover, Cisco systems conducts a number of educational trainings and courses for IT professionals and provides them with a Cisco certification in such areas as Internetwork, Network, Design and Security.

One of the Cisco Systems' most demanded products in the year of 2006 has become its virtualization feature solution. These virtualization and Cisco security features are available in Cisco Catalyst switches. These switches allow network administrators to divide their single physical network into multiple logical networks across many different locations, increasing the scalability of the network. At the same time, such Cisco security solutions allow LAN managers to secure their networks and to arrange their different groups of users, granting them a special network access. Furthermore, such virtualization allows LAN managers to reduce the amount of redundant physical networks; they have used before to meet the unique needs of different segments of their users.

In many cases, LAN virtual solutions are successfully implemented in such organizations as airports, universities and in many other establishments, where LANs have to serve and meet the needs of completely different segments of users, such as students or teachers, passengers or staff workers, etc. In addition, they are used in places, where there is a great need for security and Cisco security systems are much appreciated. With Cisco Catalyst switches many companies create on their LANs secure and multiple closed user groups, utilizing the same single physical network. It allows companies to run their special security and operation policies on all those separate virtual networks. Such LAN solutions can also become one of their core competitive advantages for some companies, since they permit them to save significant amounts of money, equipment and human resources.