(Kelai network analysis system is a professional network analysis product in the network management system. It is a comprehensive network analysis system integrating network detection, error diagnosis, performance optimization, protocol analysis and security analysis. Kelai network analysis system integrates the industry-leading expert analysis technology, provides accurate analysis of the current complex network, and provides the most comprehensive and in-depth data basis in terms of network security, network performance and network failure. It is a key product required by enterprises, governments, schools and other network management.)