(The latest version of gns3-0.7.4 on Cisco's official website! Very easy to use, absolutely easy to use. Perfect support for various routing experiments! Then upload the detailed tutorial of GNS3, so that you can fully master it. From then on, you can easily do experiments. Please pay more attention and make comments!
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GNS3-0.7.4-win32-all-in-one. exe\....)