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Student projects


NS2 as emulator in MPLS-based radio access networks

Kind of work:
Diploma Thesis
Dipl.-Ing. René Böringer
Christoph Lumme
This work deals with the relevance and application opportunities of the Network Simulator 2 (NS2) as an emulator and provides extensions of its capabilities and performance evaluations of existing and new emulation features. The work aims is to provide an extension of NS2 usable as replacement for real hardware within the development and evaluation process of new mobility protocols and solutions for radio access networks. The already implemented functionality – giving the possibilities to identify IP packages, to virtualize them, to use them in the emulation and to change them afterwards again into real IP packages - is not sufficient. To overcome this, the following requirements were identified: The NS2 should be able to emulate protocols like MPLS, RSVP-TE, MIP and I-MPLS completely transparent, whereby the respective nodes (e.g. RSVP) can be located outside and inside the emulator as well. In the context of the work a concept for extending the NS2 was provided and implemented. Also the major problem of the different addressing modes of network nodes of the real world and nodes within the emulator was analyzed and solved. Finally a performance evaluation of the emulator was done concerning the emulation of different network components, protocols and various protocol arrangements.