Robust, highly available network and safe user mobility 1 Enterprise When building communication infrastructure for enterprise we need to have in mind that quality infrastructure for voice, video is required as well as secure and easy mobility of employees within the company and delicate automated processes in manufacturing companies. As a result, requirements for system availability and for effective network security increase. More and more companies are deciding user mobility within the company and for implementing wireless technologies into manufacturing processes. High availability of networks and services is achieved at the level of network equipment, at network planning level and at the servers’ level. Robust/stable network is assured by the implementation and use of various security mechanisms at the level of network equipment. Increased user mobility has a greater importance in automated production lines business processes. Modern wireless infrastructure must provide connectivity to the all users and at the same time meet various other requirements, primarily security, availability, and the possibility of transferring different services.