(According to the request of many friends, and in order to let some beginners who are interested in network technology research see high-standard equipment, some tools that may feel mysterious are introduced for everyone to see. If there is a better computer room than this one? That's really too much, I just use this computer room as an example to show you some tools. So I will use detailed text and some close-up pictures to introduce some little knowledge to you. Without further ado, let’s get down to business.)