(If you are a network worker, you must test the feasibility of the network topology when you are in business contact with Cisco Huawei routing and switching, when configuring switches or routers, then this tool will help you to better terminate your work. There are 14 in the compressed package. Experiment with the simulated topology and try it out! Since 51CTO can only upload a maximum of 50M, the index can only be sub-packaged. After downloading, extract the two packages into the same folder, and then complete the first package /data/2224443 and the second package /data/2224444)