In the Virtual Voice lab series, I am using an Ubuntu Linux environment.  To eliminate permissions issues, it is best that you run GNS3 as root.

Here are a couple issues I have experienced when running GNS3 as a normal user.

Not able to start dynamips.
Error msg: Can’t Connect to the hypervisor on port 7200

Not able to connect to a cloud object.
Error Msg: 206-unable to create Linux raw ethernet NIO
Error Msg: 206-unable to create Linux generic ethernet NIO
Error Msg: 206-unable to create UDP NIO

 

 

Here are a couple ways to run GNS3 as root.

  1. Use the sudo command:
    • Open a terminal window
    • Navigate to the gns3 folder. Example: ‘cd /home/josh/GNS3′
    • Preceed gns3 command with the sudo command. ‘sudo ./gns3′
  2. Create a launcher icon
    • Right click on the desktop
    • Select ‘Create new launcher’
    • Browse to the gns3 executable.
    • Add ‘gksudo’ before the gns3 executable path.

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