GNS3 Windows - VPSC Failed to start dynamips


When I start VPSC, in GNS3 I get the following,

  1. When I try and click test under Dynamips I get Failed to start dynamips
  2. When I try and drag a router over to the main screen I get  Cant start Dynamips on port 7200


Copy the file cygwin1.dll from your VPCS folder into your dynamip folder.

About the Author


R Donato

Rick Donato is the Founder and Chief Editor of He currently works as an SDN/NFV Solutions Architect and has a keen interest in automation and the cloud.

You can find Rick on Twitter @f3lix001