Author Archive

RFC #42 is RFC 8342

March 18th, 2018 Comments off

My 42nd RFC has been published and it got the number RFC 8342. Despite the funny number, I believe this is one of the more important RFCs I have worked on since it tells us how to think about configurations and their relationship to operational state. A few more RFCs will appear during the coming weeks providing the technology extensions that allow us to use the new framework in practice. Work on this document started with a trip to Stockholm in 2016 but the discussions have a much longer history and it feels good to have them settled and the document published.


YouTube Research in the APNIC Blog

September 27th, 2017 Comments off

Our research on YouTube performance over IPv6 made it into the blog of the Asia-Pacific Network Information Centre (APNIC). You can find the blog post here.


LMAP Information Model and Data Model Published

August 23rd, 2017 Comments off

The EU funded LEONE project (2012-2015) contributed to the development of standards for large-scale measurements of Internet performance, produced by the LMAP working group of the IETF. The key specifications, the LMAP information model and the LMAP YANG data model, have been published as RFCs just a few days ago. It took roughly five years from the start of the formation of the working group until the publication of the core specifications. The first version of the information model was posted roughly 2.5 years before publication of the final document. This example shows that initiating and completing standardization work within the lifetime of EU projects is just not realistic.


IM 2017 Best Dissertation Paper Award

May 11th, 2017 Comments off

Vaibhav Bajpai presented a paper summarizing his PhD thesis at the IFIP/IEEE International Symposium on Integrated Network Management (IM 2017) and he received the best dissertation paper award.

Dagstuhl Seminar: Using Networks to Teach About Networks

April 3rd, 2017 Comments off

We helped organize a Dagstuhl seminar on Using Networks to Teach About Networks, which took place March 12 – 15, 2017. We discussed the different approaches to teach computer networking and the use of online resources to better educate students.


IM 2015, CNSM 2015, Dagstuhl Seminar 16012

February 7th, 2015 Comments off

Our research group is taking an active leadership role in the organization of some key scientific events this year:

For the IM 2015 demo track, we received a good number of submissions and the demo selection process is well underway. For CNSM 2015, we hope to attract a good number of submission. CNSM is the most selective conference in the field of network and service management research. It is important for every researcher working on topics related to network and service management to present and discuss their work at this key event. The paper submission deadline is April 24th, 2015.


LLN Plugfest IETF 90

July 23rd, 2014 Comments off

We have demonstrated an implementation of the LOWPAN-MIB at the Low-power Lossy Networks (LLN) plugfest that took place on Sunday before the 90th IETF meeting. We showed how to access the counters via our Contiki SNMP implementation and Contiki’s CoAP implementation. The plugfest was overall very interesting and very well organized. People involved in several interesting projects attended the plugfest and it was nice to get into personal contact. Further details can be found here.


IPv6 Traffic Growth Update

June 12th, 2013 Comments off

Here is another update of our IPv6 traffic. Averaged over the last year, the IPv6 traffic is about 5% of the overall Internet traffic we have. This is pretty good given the fact that only some parts of Jacobs’ network currently advertises IPv6. In particular, we have no IPv6 in the student dorms (and the graph clearly suggests that students are a major contributor to our Internet traffic – in particular during finals periods).


Measuring Happy Eyeballs at RIPE 66

May 16th, 2013 Comments off

Vaibhav Bajpai just gave a talk about his work on measuring the effectiveness of happy eyeballs at the RIPE 66 meeting. A recording of the talk can be found on Vimeo.

The IETF has developed solutions that promote a healthy IPv4 and IPv6 co-existence. The happy eyeballs algorithm for instance, provides recommendations to application developers to help prevent bad user experience in situations where IPv6 connectivity is broken. We study the effectiveness of the happy eyeballs algorithm.


Leone Research Project

November 30th, 2012 Comments off

The Leone project is a 30 months research project, funded by the European Commission with close to 2.8 million Euros. The main goal is to research and develop an innovative network management framework that has two major novelties:

  • It is focused on Quality of Experience: Probes sited alongside end users measure performance and functionality to websites and test servers, both local and distant.
  • It integrates multidimensional information: It combines measurements made by probes in the network of the local Internet service provider, probes in networks of other Internet service providers, control plane information etc.

These two novelties enable network management to focus on improving the user’s experience of the Internet in a world of highly distributed and increasingly meshed applications.  The project partners are:

  1. British Telecom (United Kingdom)
  2. MG-SOFT (Slovenia)
  3. Sam Knows (United Kingdom)
  4. Telecom Italia (Italy)
  5. Aalto University (Finland)
  6. Jacobs University Bremen (Germany)
  7. University Roma Tre (Italy)
  8. University Carlos III (Spain)
  9. University Catholique de Louvain (Belgium)
  10. Martel (Switzerland)

We hope that Leone (the lion) will refrain from eating Flamingo and instead both will become friends and lead to synergies.