Are you running GNS3 or GNS3 Workbench and getting the error:
Can’t connect to the external hypervisor on 127.0.0.1:7200
After correctly setting up GNS3 Workbench I was getting that error when putting the router into work area.
To fix the error: Can’t connect to the external hypervisor on 127.0.0.1:7200 you must follow these steps:
Edit – IOS Images and Hypervisors [CTRL+SHIFT+I]
Make sure under “External Hypervisors” these settings. The default “blank” working directory doesn’t have enough permissions.
Go to “Edit – Preferences”
Make sure the binding is set to 127.0.0.1
Move back to the Dynamips tab and make sure that the executable in the root path and that the working directory has enough permission to be written to. Click the “Test Settings” button last to make sure “Dynamips” can run.
You should see this:
Go Back to IOS Images. We need to test AutoCalculation and Test the IOS settings.