ICTEAM - Public Thesis defense

February 24, 2020



Place Croix du Sud - Auditoire SUD 11

Models and Algorithms for network optimisation with Segment Routing by François AUBRY

Pour l’obtention du grade de Docteur en sciences de l’ingénieur et technologie

Optimizing the way traffic is routed over networks has been of interest since we first started using computer networks to communicate and exchange information.

Network technologies are constantly evolving and so do the underlying problems that need to be solved.

This thesis focus on studying the recently proposed segment routing technology. In a traditional IP network packets are routed using shorted paths according to weight that are configured on the network. Segment routing offers a new way of routing traffic by allowing packets to do some detours on their way. Between these detours, traditional shortest path routing is used, making this technology have almost no usage overhead.

We aim at providing a mathematical formalization of segment routing and showcase several of its use cases. We believe that such a formalization is going to help advance the research of the algorithmic aspects of segment routing by providing a solid mathematical foundation and notations which can serve as a starting point for others to research this topic.

We leverage segment routing to solve traffic engineering problems, perform network monitoring and provide traffic duplication services that are robust to link failures.

Jury members :

  • Prof. Yves Deville (UCLouvain), supervisor
  • Prof. Olivier Bonaventure (UCLouvain), supervisor
  • Prof. Charles Pecheur (UCLouvain), chairperson
  • Prof. Pierre Schaus (UCLouvain), secretary
  • Prof. Stefan Schmid (University of Vienne, Austria)
  • Prof. Bernard Fortz (ULB, Belgium)