Research overview
Traffic Engineering
The objective of traffic engineering in IP-networks is to avoid congestion
in the network and to make better use of available resources by adapting
the routing to the current traffic situation. Today traffic is usually
routed on the shortest path through a network. This is the case even if the
shortest path is overloaded and there exist alternative paths that are
underutilised. We investigate how optimisation techniques can be applied to
IP-networks in order to better utilise network resources and to avoid
congestion by balancing load over several paths.
The research includes investigation of:
- Methods for setting links-weights in the legacy
intra-domain routing protocols OSPF and IS-IS
- New routing mechanisms based on optimisation techniques
- Robustness of traffic engineering techniques and how
they manage to handle Internet traffic dynamics.
Traffic characteristics
Traffic engineering presuppose good knowledge about Internet
traffic behaviour as well as methods and tools for network
performance measurements. Many traffic engineerings methods
need as input a traffic matrix describing the demand
between each pair of nodes in the network.
Our research includes investigation of:
- methods for traffic matrix estimation and network tomography
- predictability and temporal properties of network traffic
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