The Open Enterprise Server (OES) Migration Tool has a plug-in architecture and is made up of Linux command line utilities with a GUI wrapper. You can migrate AFP to OES 2018 or later through the GUI Migration Tool or through the command line utilities.
To get started with migration, see
Overview of the Migration Tools in the OES 2018 SP3: Migration Tool Administration Guide.
For more information on migrating AFP, see
Migrating AFP to OES 2018 SP3in the OES 2018 SP3: Migration Tool Administration Guide.