(This book adopts a task-driven writing method to elicit relevant skills for application needs, provide different tools and software solutions for different network management tasks, and implement modularization of network monitoring, configuration, diagnosis, and management, so that readers can Select the corresponding tool for the network management task, and complete the corresponding network management work. The book is divided into 14 chapters, mainly including IP address and MAC address tools, network inspection and analysis tools, network management and testing tools, Cisco switch management tools, Cisco router management tools, HPOpenView management tools, server management and monitoring tools, Network security testing tools, remote monitoring and control tools, IP management and connectivity testing tools, network security and system log analysis tools, server monitoring tools, remote connection and management tools, and network physical link testing tools, etc. This book adopts a brand-new writing concept, is mission-driven, needs-oriented, modularizes services, organizes skills, covers almost all major and commonly used network management tools, and covers various typical and complex network management tools. scenes to be used. The language of this book is easy to understand, the content is rich and detailed, it can be used as a tutorial book for network management beginners, and can be used as a reference book for senior network administrators.)