On creating the topology in the MiniEdit canvas and running same topology, we have to save the configuration. Saved configuration can be in two formats:

• Mininet topology: Files saved in this format are saved in the *.mn format. To save the file in this format, click on File at the top and select Save in the menu dropped down. Type the filename and save the file.
• Custom Mininet script: Files saved in this format are saved in the *.py format. These files can be run as a Python file because of the file extension. To save the file in this format, click on the File at the top and select Save Level 2 Script. Type the file name and save the file.

The files saved are stored in any directory of the VM and can be loaded any time. You can see the following screenshot while saving the Mininet topology: 

While saving the custom Mininet topology you can see the following screenshot: