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Olivier Bonaventure
Works at Université catholique de Louvain
Attended Université de Liège
Lives in Gembloux, Belgium
289 followers|50,200 views
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Olivier Bonaventure

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An easier solution to configure policy routes that are required when using Multipath TCP
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Olivier Bonaventure

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To understand how Multipath TCP works on the real internet, we have started to analyse packet traces from the multipath-tcp.org web server. Results from this analysis will appear in a series of blog posts.
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Why is there less attempts than successful connections for 1 subflow? Not sure I get the right understanding of "successful" and "attempted".
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Olivier Bonaventure

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Félicitations & herzlichen Glückwunsch!
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Segment Routing is a new packet forwarding technique developed within the IETF to steer packets efficiently along non-shortest paths. Two dataplanes exist : MPLS and IPv6 with a new routing header. David Lebrun has released today the first implementation of this new IPv6 extension in the Linux kernel. After #mptcp   #openlisp  and #shim6   this is the fourth implementation of a new IETF protocol released by UCL researchers. See http://www.segment-routing.org
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Olivier Bonaventure

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There is a growing number of people who try the new Multipath TCP enabled Linux kernels. Here are some recommendations on a good default configuration.
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Have him in circles
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Olivier Bonaventure

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If you plan to perform experiments with Multipath TCP, there are several software packages that could help you to use this new protocol, see http://blog.multipath-tcp.org/blog/html/2015/01/13/useful_software.html
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Indeed, there is some information on http://www.pps.univ-paris-diderot.fr/~boutier/source-specific-routing.html I'll ask Matthieu to provide additional links
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Flowbender : another approach to perform load balancing in datacenter switches to enable hosts to intelligently steer flows away from congested links
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I'm not convinced that their solution works at load >100%. In this case, changing the TTL after each ECN mark would likely result in oscillations that are not discussed in the paper... Using the TTL is a nice hack but there is still some work to do to ensure that the solution works all the time.
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Olivier Bonaventure

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MPTLS : how to closely couple  #mptcp  and #TLS  together to improve resilience against various types of attacks

http://tools.ietf.org/html/draft-bonaventure-mptcp-tls-00
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For this new academic year, I've decided to flip my networking class. Instead of explaining the theory based on the contents of the book to the students, I'll ask them to read the ebook and will use the time in the auditorium to discuss exercises with them. To make sure that this approach works, we are adding new multiple choice questions to the ebook so that the students can test their understanding of each book chapter while they are reading. These exercises will be updated every week until December. A draft of the exercises for the first chapter covering the principles of framing and reliable transfert (alternating bit protocol, go back-n and selective repeat) is already available. Comments are welcome. http://cnp3book.info.ucl.ac.be/2nd/html/mcq-ex/mcq-reliability.html
Bit stuffing. Consider a simple protocol that uses 16 bits frames. Bit stuffing can be used to recover the frames from a string of bits. The table below shows an original frame (before bit stuffing) and a transmitted frame (after having applied bit stuffing). Only one of the lines below ...
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Olivier Bonaventure

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The Kame dancing turtle has been for many years the standard test to verify visually whether IPv6 was working. http://www.42.be provides a nice visual image delivered from 1000 different IPv6 addresses. A nice way to test the establishment of a large number of IPv6 connections. Would be even better if all sub-images could be served by different servers in different networks. Only available over IPv6...
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Not sure about the intent there... even less clue about the domain name. 
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People
Have him in circles
289 people
Edouard Wylleman's profile photo
Xavier Martin's profile photo
Hugo Héctor Fernández's profile photo
Thibault Helleputte's profile photo
Vinoth Kumar Vivekanandan's profile photo
David Jeusette's profile photo
Safouen Allani's profile photo
Jim Armstrong's profile photo
Hongxiang Gu's profile photo
Education
  • Université de Liège
    Engineering, 1987 - 1992
  • Université de Liège
    PhD, 1992 - 1999
Basic Information
Gender
Male
Work
Employment
  • Université catholique de Louvain
    Professor, 2004 - present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Gembloux, Belgium
Previously
Verviers, Belgium - Brussels, Belgium - Liège, Belgium