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DTN Agent for ns-2

The DTN model is implemented as a set of classes in the ns-2 simulator. The model was developed in order to study the deployment of DTN on top of traditional, Internet-based networks and can be useful in experimenting with issues such as: storage space management, custody acceptance and rejection reporting, routing strategies, retransmission timeouts, and bundle fragmentation. The underlying network topology is assumed to be static and, thus, this model is inappropriate for testing routing algorithms in ad-hoc network settings, at least for the time being. Implementation of a full-fledged routing scheme is part of future development plans. The DTN model supports both TCP and UDP convergence layers. For more information please access the following links:

A formal description and sample application of the DTN model can be found in the paper by D. Vardalis and V. Tsaoussidis, "Exploiting the potential of DTN for energy-efficient internetworking", Journal of Systems and Software, January 2014, doi: 10.1016/j.jss.2013.12.035.




This work has been conducted by Dimitris Vardalis (dvardali (at) as part of his PhD research, under the supervision of Professor Vassilis Tsaoussidis in the Dept. Of Electrical & Computer Engineering of Democritus University of Thrace, Greece ( The work has been partially funded by the Space internetworking Center (SPICE: and Space Internetworks Ltd., 12 Rethymnou, 10682 Athens, Greece (