GNS3, the famous network simulator, has reached version 2.0 today, and it includes quite a few new features.

Some of the most interesting ones are:

  • Save as you go
  • Support for multiple users working in real-time on the same project
  • Smart packet capture
  • No more restrictions on nodes which can be used for capturing
  • New “Cloud” and “NAT” nodes
  • New templates

Overall, this latest release features a brand new architecture that more clearly separates the GUI from the backend, theoretically making the project easier to update and contribute to.

However, don’t just jump on this without thinking about it carefully. The developers themselves recommend not upgrading to version 2.0 if you are in the middle of an important project:

Please do not upgrade if you are working on something important like a certification or something else. Understand there is no rollback possible once you open an older project in version 2.0.

You can check the official announcement here. For a full list of changes in this 2.0 release, take a look at this page. I am excited to give this a try and see how it compares to the previous version.