Deutsch Intern
    Chair of Computer Science III

    100GET-E3 R3G

    100GET-E3 R3G

    Project Team


    Prof. Dr.-Ing. Phuoc Tran-Gia,

    Dr. Michael Menth,

    Dr. Rastin Pries

    Researchers Michael Duelli

    Julian Ott,

    Vlad Singeorzan,

    Thilo Müller

    Former Students

    Christopher Pluntke,

    Eduard Weber,

    Xiao-Hua Qin,

    Anke Endler

    Funded period

    October 2007 - September 2010,

    October 2010 - December 2010


    Data communication demands for more and more capacity. DSL access of 16 Mbit/s is common in Germany, 100 Mbit/s is already offered by some providers. Fiber access is state of the art in many countries of South-East Asia and tremendous traffic volumes are exchanged over fiber lines. This trend will continue over the next decade. The market is competitive such that Internet service providers (ISPs) need to provide high-quality services (high throughput, little delay, little jitter, high reliability) at low cost.

    The CELTIC initiative brings together university researchers and business partners to jointly face this challenge. ADVA, Alcatel-Lucent, Ericsson, and Nokia-Siemens Networks are the main drivers each of them heading a group of university and small or medium enterprise partners. The Chair of Distributed Systems of the University of Wuerzburg is part of the subproject "100GET-E3: End-to-End Carrier-Grade Ethernet" led by Nokia-Siemens Networks and receives funding under the name "R3G: Routing, Grooming, Resilience, and Resource Management for Multilayer Networks".

    The objective of the project 100GET is to provide a low-cost high-capacity solution for the network of the future. Two main objectives are addressed: the transmission of 100 Gbit/s and the provision of high-quality services at low cost. The project R3G focuses on the second aspect.

    One of the main cost factors for ISPs are network components and among them IP routers are most expensive. Therefore, ISPs look for alternatives that are cheaper with respect to investment and operation cost. Enhanced Ethernet technology - the so-called Carrier Ethernet - seems to be a candidate to replace many IP routers within networks of ISPs. Therefore, international standardization bodies like IEEE or IETF push forward T-MPLS, VLAN XC, and PBB-TE/PBT.

    The research of the University of Wuerzburg targets at the following issues. Cost savings can be obtained by keeping traffic in the optical domain as long as possible, using packet-switching capabilities of Carrier Ethernet nodes inside the network only when needed, and banning IP routers from the core. This is achieved by intelligent traffic grooming and routing that should make best use of the network resources. In addition, the reliability of the network is improved by cost-efficient protection switching and restoration mechanisms. To that end, optimization methods for the design and configuration of a future communication architecture are developed.

    Project Partners

    Cooperating business partners: Cooperating university partners:

    On the Web


    • Greedy Design of Resilient Multi-Layer Networks Duelli, Michael (2010, June 4).
    • Greedy Design of Resilient Multi-Layer Networks Duelli, Michael; Qin, Xiaohua; Menth, Michael in 6th Conference on Next Generation Internet Networks (NGI 2010) (2010).
    • Deferring CAPEX Investments in Multi-Layer Networks through IP Traffic-Dependent Expansion Stages Duelli, Michael; Endler, Anke; Menth, Michael in 11. ITG-Fachtagung Photonische Netze (2010). 133–138.
    • A Generic Algorithm for CAPEX-Aware Multi-Layer Network Design Duelli, Michael (2009, May 5).
    • Network Planning, Control and Management Perspectives on Dynamic Networking Michaelis, Thomas; Duelli, Michael; Chamania, Mohit; Lichtinger, Bernhard; Rambach, Franz; Türk, Stefan in European Conference and Exhibition on Optical Communication (ECOC) (2009).
    • A Generic Algorithm for CAPEX-Aware Multi-Layer Network Design Duelli, Michael; Weber, Eduard; Menth, Michael in 10. ITG-Fachtagung Photonische Netze (2009). 167–174.
    • CAPEX-Aware Design of Survivable DWDM Mesh Networks Pluntke, Christopher; Menth, Michael; Duelli, Michael in IEEE International Conference on Communications (ICC) (2009).
    • Performance Evaluation of IP over Cost-Optimized Optical Multilayer Networks with SRLGs Duelli, Michael (2008, April 28).
    • Minimizing Installation Costs of Survivable DWDM-Mesh Networks: A Heuristic Approach Duelli, Michael; Pluntke, Christopher; Menth, Michael in 4th Euro-NGI Conference on Next Generation Internet Networks (NGI 2008) (2008). 15–22.
    • Performance Evaluation of IP over Cost-Optimized Optical Multilayer Networks with SRLGs Duelli, Michael; Hartmann, Matthias; Menth, Michael; Hülsermann, Ralf; Düser, Michael in 9. ITG-Fachtagung Photonische Netze (2008). 21–29.