CSSE Seminar Series (CSSESS)

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In today's Internet, services are very different in their requirements on the underlying transport network. In the future, this diversity will increase and it will be more difficult to accommodate all services in a single network. A possible approach to cope with this diversity within future networks is to set up isolated networks for the dierent services on top of a single shared physical substrate. Network virtualization is considered as the key technology for future mobile and mixed Internet based networks supporting the establishment of such coexisting networks. Several different techniques to build virtualized network components have been proposed in recent literature [1, 2, 3]. These papers introduce virtual routers build on commodity hardware, the usage of specialized hardware components, and options separating the data path from the control plane. However, very little is know about the trade-off between isolation and performance and the scalability of these systems. In this talk, we examplarily explain one promising virtual network architecture. We describe our approach to create analytical and simulation models of virtualized network components and give an outlook on which isolation and scalability problems we will address in future work.

Daniel Schlosser is a researcher in the Department of Communication Networks, the Faculty of Mathematics and Computer Science, at the Julius Maximilians University of Wuerzburg in Germany. He has been involved in research projects on P2P content distribution, Thin-Client systems, and network management. He is currently working in the COMCON project (on control and management of coexisting networks) within a G-Lab Phase 2, in cooperation with Infosim, University of Stuttgart, Nokia-Siemens-Networks and NTT Docomo Eurolabs. His special interests are in QoE monitoring and performance analysis of isolation mechanisms between virtual future networks.

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