We gave a talk in which we share our experiences and lessons learned from using the RIPE Atlas platform for conducting measurement research. We describe how subtle rate limits can affect experiment design. We show how calibration of probes from hardware revision down to the firmware version is useful when analyzing measurement results. We describe the usefulness by showing how different hardware revisions affect measurement results. We show how per-hop aggregation mistakes during data analysis can have impacts on measurement results.
We participated in a Dagstuhl seminar on Global Measurements Framework from November 17-20, 2013. The seminar discussed challenges in running large-scale measurement platforms, the associated privacy issues, with a particular focus on how to make it more useful by regulators, Internet service providers, and network users.
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).
Vaibhav Bajpai gave a talk about his work on measuring the effectiveness of happy eyeballs at the RIPE 66 meeting. 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. A recording of the talk can be found on Vimeo.
A RPL-MIB implementation, based on draft-sehgal-roll-rpl-mib-06, has been completed for the Contiki SNMP agent. An AVR Raven mote has been deployed for testing the MIB and is reachable via the following information: Hostname: rpl-mib.eecs.jacobs-university.de Port: 1610 If using the Net-SNMP tools, you can retrieve all the MIB objects by using the following: $ snmpwalk -v 1 -c public udp6:rpl-mib.eecs.jacobs-university.de:1610 1 The current RPL-MIB implementation is hosted under the Jacobs University private enterprise OID number.
A LOWPAN-MIB implementation, based on draft-schoenw-6lowpan-mib-03, has been completed for the Contiki SNMP agent. An AVR Raven mote has been deployed for testing the MIB and is reachable via the following information: Hostname: 6lowpan-mib.eecs.jacobs-university.de Port: 1610 If using the Net-SNMP tools, you can retrieve all the MIB objects by using the following: $ snmpwalk -v 1 -c public udp6:6lowpan-mib.eecs.jacobs-university.de:1610 1 The current LOWPAN-MIB implementation is hosted under the Jacobs University private enterprise OID number.
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.
The European project Flamingo (yes, simply a name, not an acronym) just finished its kickoff meeting at the University of Twente. The project partners are: University of Twente (Netherlands) INRIA/LORIA (France) University of Zurich (Switzerland) Jacobs University Bremen (Germany) University of Federal Armed Forces Munich (Germany) Universitat Politecnica de Catalunya (Spain) iMinds (Belgium) University College London (United Kingdom)
Our IPv6 traffic keeps growing, reaching new records since the students are back on campus. Even our outgoing traffic is on the rise. Perhaps Jacobs should go ahead and start making their core services (e.g., the official Jacobs web pages) IPv6 ready as well.
We have identified a number of research topics that can be worked on as part of a BSc or MSc thesis. Please consult our thesis topics page for an overview and contact us should you be interested to receive more details.