The Overlay Framework

OverSim is an open-source overlay and peer-to-peer network simulation framework for the ​OMNeT++/OMNEST simulation environment. The simulator contains several models for structured (e.g. Chord, Kademlia, Pastry) and unstructured (e.g. GIA) P2P systems and overlay protocols.

OverSim is developed at the ​Institute of Telematics (research group Prof. Zitterbart), Universität Karlsruhe (TH) within the scope of the ​ScaleNet project funded by the ​German Federal Ministry of Education and Research. The simulator is actively developed and open to contributions. If you have any questions regarding OverSim, please send an email to the MailingList.

If you write a paper using OverSim, please use the following citation: ​bibtex reference.

News

May 26, 2010

• Released OverSim-20100526.
  • NICE overlay: now compatible to Scribe/generic ALM API
  • New ALM test application
  • New generic network coordinate system (NCS) interface
  • Optimized NCS-based RPC-time-out calculation
  • Kademlia: Replacement cache as described in the paper
  • Example overlay (MyOverlay) and application (MyApplication) added
  • Support for confidence intervals in post-processing scripts
  • GCC 4.4 compatibility
  • Many other bugfixes and enhancements (take a look at doc/ChangeLog)

September 9, 2009

• We successfully presented OverSim at the ​IEEE P2P'09 in Seattle, USA. After giving an ​invited talk in the ​Evaluation Tools Session we presented OverSim's features for real network application in the following demo session.

September 8, 2009

• Released OverSim-20090908.
  • New Python scripts for postprocessing and plotting
  • New application layer multicast protocol NICE
  • GNP/NPS network coordinate system
  • Hotspot roaming model for simplegameclient
  • DHT: support for multiple entries with the same key
  • Underlays: Added support for asymmetric channels
  • Several API and INI FILE CHANGES - check your files!
  • Many other bugfixes and enhancements (take a look at doc/ChangeLog)

March 4, 2009

• The GI/ITG Fachgruppe KuVS has awarded the OverSim project with the KuVS Communication Software prize. The prize is awarded for innovative software for use in communication and distributed systems.

[Old News...]

Good Starting Points

• OverSimGuide -- Starting point for the OverSim documentation.
• OverSimFeatures -- Already available and planned OverSim features.
• OverSimDownload -- Download OverSim on this page.
• MailingList -- Join the mailinglist for user and developer discussions.
• OverSimPublications -- Publications related to OverSim
• OverSimTeam -- The core developers of OverSim.
• ​P2PNS/P2PSIP -- A distributed name service for P2PSIP built with OverSim

For a complete list of available wiki pages, see TitleIndex.