Measuring Webpage Similarity from Dual-Stacked Hosts

June 1st, 2016 Comments off

Measuring Webpage Similarity from Dual-Stacked Hosts from Vaibhav Bajpai on Vimeo.

In this talk, we compare the similarity of webpages delivered over IPv4 and IPv6. It was presented at the RIPE 72 plenary in Copenhagen.

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Vantage Point Selection for IPv6 Measurements: Benefits and Limitations of RIPE Atlas Tags

June 1st, 2016 Comments off

Vantage Point Selection for IPv6 Measurements: Benefits and Limitations of RIPE Atlas Tags from Vaibhav Bajpai on Vimeo.

In this talk, we show an application of system tags by performing vantage point selection of dual-stacked probes. This exploration reveals how with around 2K dual-stacked probes, RIPE Atlas provides the richest source of vantage points for IPv6 measurement studies. User tags on the other hand are based on a manual process which is largely dependent on proactive participation of probe hosts. We show that user tags tend to become stale over time. It was presented at the MAT working group at RIPE 72 in Copenhagen.

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Dagstuhl Seminar: Global Measurements: Practice and Experience

January 19th, 2016 Comments off

We helped organize a Dagstuhl seminar on Global Measurements: Practice and Experience from January 04 – 07, 2016. This was a followup of the seminar on Global Measurement Framework. The second seminar aimed at discussing the practical experience gained with building global measurement platforms. It brought together people who are actively involved in the design and maintenance of global measurement systems, who do research on the data delivered by global measurement systems, and who use data derived from global measurement systems in order to manage networks or services or as input for regulatory decisions. Here is a picture from the event:

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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.

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Measurement Research within the Python3 Ecosystem

November 21st, 2014 Comments off

Measurement Research within the Python3 Ecosystem from Vaibhav Bajpai on Vimeo.

In this talk, we present a set of tools that we find useful for measurement research and would like to share them with the larger RIPE community. Given the nature of the talk, we will make a live demo of running code snippets using the IPython notebook.

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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.

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Lessons Learned From Using the RIPE Atlas Platform for Measurement Research

May 16th, 2014 Comments off

Lessons Learned From Using the RIPE Atlas Platform for Measurement Research from Vaibhav Bajpai on Vimeo.

In this talk 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.

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Dagstuhl Seminar: Global Measurement Framework

December 29th, 2013 Comments off

We participated in a Dagstuhl seminar on Global Measurements Framework from November 17 – 20, 2013. The seminar discussed challenges in running a large-scale measurement platform, its associated privacy issues, with a particular focus on how to make it more useful within the regulators, ISPs, and end-users community. Here is a picture from the event:

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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).

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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. Watch the video recording of his talk.

Measuring the Effectiveness of Happy Eyeballs from Vaibhav Bajpai 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.

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