Daniel Karrenberg

March 1992 - NIKHEF Amsterdam - Main Computer Room: "We have connectivity!" Marten called out. "Running the check script." Daniel responded. The two young engineers were intently looking at their screens, totally oblivious to anything around them: the noise of the air-conditioning fans, the blinking lights of communications equipment and the whining of the high-speed disk drives.

This work demonstrates the value of the results collected by RIPE Atlas independent of the original purpose for collecting them. Using all traceroute results from a particular day as an example, we first show that near real-time analysis of the result stream is feasible. Then we show that this has great potential for studying the packet layer of the Internet in general and for providing tools to network operators in particular. All this suggests a large and diverse potential for further work.

View maps based on RIPE Atlas traceroute measurements. Compare the maps to the ISP's description of their topology. See the potential of RIPE Atlas for mapping the packet layer topology. Learn about experimental tools you can use yourself to explore. Make suggestions for further work.

On Wednesday 13 June 2012, an unknown error caused the removal of several zone files from the configuration of our reverse DNS provisioning system. Following up from the initial report published on RIPE Labs, we further analysed what caused the incident and implemented a number of procedures to decrease the likelihood of this happening in the future.

RIPE NCC members can browse RIPE database objects with history in RIPEstat for a couple of weeks as a demonstration. Please check it out and let us know what you think.

Bringing high-quality independent measurements to your network!

K-root Instances

In addition to the existing global and local instances of K-root, we propose member instances of K-root. This article describes the benefits and how this will be implemented during the pilot phase.

Last week there were several problems with the RIPE NCC's reverse DNS (rDNS) service. This article is a first report about the events. It is not intended to analyse the causes or make detailed recommendations for action.

In anticipation of reaching the last /8 of IPv4 addresses in the RIPE NCC service region, we have been looking at the number of IPv4 addresses the RIPE NCC handed out over the last four years. The curves look surprisingly uniform.

This is a 12000x12000 pixel high resolution version of Figure 1 in the article "RIPE Atlas & Anycast Instance Switches". It is intended for zooming into specific events, not to be viewed as a whole.

RIPE Atlas can now test packet flows from more than 1000 vantage points on the Internet. We took a quick look at anycast traffic to DNS root name servers. There is a lot of interesting signal in this data.

128.0/16 ping reachability

RIPE Atlas provides a view of 128.0.0.0/16 from the data plane. Can packets actually get there and back? Please find the results in this article.

This is a better formatted version of the response to Alexander Isvanin's comment on "A RIPE Atlas Probe for Every RIPE NCC Member"

Ping times to k.root-servers.net. Click image for a live version.

RIPE Atlas has made steady progress in its first year. But we have more ambitious plans. Please read below how we are suggesting to achieve them and why we need your support.

According to address policy, the experimental address allocations for RIPE RIS beacons have to be returned soon. This would mean we have to either discontinue the RIS beacons or request permanent allocations for them according to address policy. We are asking for community support to continue operating the RIS beacons at the current addresses and for support for the address allocations.

Future of RIPE TTM responses from the October 2011 Survey.

TTM Future Survey, October 2011: Answers to statements about use and benefits of TTM.

alternative

Use and Benefits of TTM from Suvey 2011. 2nd version

Future of RIPE TTM from Survey in October 2011

Use and Benefits of RIPE TTM from the Survey in October 2011

As part of our effort to make an evolution plan for the RIPE Test Traffic Measurement service, we conducted a survey among TTM hosts. Find below the results and suggested next steps.

The RIPE NCC is working on a toolbox, called RIPEstat, that will make it easier to access the various datasets maintained by the RIPE NCC. This toolbox will be developed in close cooperation with the community. There will be public demo sessions as described in this article.

RIPE Atlas probes are now active on five continents. After the big run on the measurement probes during the recent RIPE Meeting, the deployment is a little slower than expected; but there is a steady stream of probes coming online. We expect to make our initial goal of 300 active probes well before the end of 2010. Probe hosts can win an iPad by keeping their probes up during December.