If you are a student or researcher, you likely have access through your institution rather than a direct personal download.
Windows XP, Windows 7 (32-bit or 64-bit), or specific Linux distributions (RedHat/CentOS). download opnet modeler 16.1
Ensure the path to the Visual Studio cl.exe compiler is added to the system Path . Troubleshooting Common Issues If you are a student or researcher, you