(Although the Cisco GNS3v2.0.0alpha1all-in-one network simulator is an alpha version, its functions are qualitatively improved compared to the previous version 1.5.2, and many bugs in the previous version have been modified and many new functions have been added! Do Cisco NA, NP, IE experiments without hindrance! ! ! The owner of this software package has specially integrated the latest CRT version and Wireshark version as of October 2016. When installing, please pay attention to remove the old version components in the GNS3 installer. After installation, directly set the corresponding software component installation path in the preferences. Can! Including VM for VMware and VB versions, dmg for MacOS and L3, L2IOS for the latest version of IOU! ! ! Open Source Pavilion, the most complete and best source code, algorithms, tutorials, software tools, the database around you.)