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Wolfgang MühlbauerTechnische Universität BerlinAn-Institut Deutsche Telekom Laboratories FG INET, Sekr. TEL 4 Ernst-Reuter-Platz 7 10587 Berlin, Germany
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Contact in Munich:
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Inter-Domain Routing:
The complex interactions arising in huge
distributed systems like the Internet are still poorly understood. In my
work, I try to get a better understanding of the routing layer in the
Internet. This involves a detailed study of the interactions and routing
decisions arising from BGP. Based on the obtained insights, I'm exploring
ways how to build inter-domain routing models with the focus on routing
policies: What level-of-detail is needed to model the Internet accurately
and what details can be neglected to keep the model scalable? Work done so
far in this area is joint work with
Olaf Maennel,
Steve
Uhlig and my advisor Prof. Anja Feldmann.
Clean Slate Routing Architectures:
Today's routing
architecture has significant deficiencies: Routing table growth, high updates
rates, lack of mobility, insufficient support for multi-homing or traffic
engineering etc. Given these problems, many researchers currently believe that
these shortcomings cannot be resolved by the conventional incremental style of
research. Clean-slate research can be characterized by the following question:
"How would we design the Internet if we could start from scratch?"
Currently, I'm working on a clean-slate routing architecture that addresses the
aforementioned problems and that is nevertheless incrementally deployable. Work
in this area is partially funded by the Trilogy project.
Seamless Mobility:
Mobility is a requirement not appropriately addressed by
the original design of the Internet since an IP address has two fundamentally
different tasks. It specifies a network location (for routing) and serves as
an identifier (for application addressing). Therefore moving between two
locations usually implies a change in IP address, due to moving to a different
network domain. This typically breaks existing network connections and thus
hinders mobility. I have been working on solutions that allow for seamless IP mobility and that are easy to deploy.
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