• FAQ - see if your question is already answered here
  • User Guide - all usage information for the GUI including quickstart, port and stream configuration, device emulation etc.
  • API Guide - all installation and usage information for the Python API, including complete API reference.
  • Developer Guide - all developer oriented information including build instructions, contribution guidelines, design notes, future roadmap etc.
  • Ostinato with GNS3 Video Tutorial Series by @davidbombal. Unicast, Multicast, Broadcast, 802.1Q, Double-tagged frames etc.
  • Ostinato: open, scalable packet/trafic generator - Slides from the talk at the FOSS.IN/2010 conference