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RIPE Atlas

Mihnea-Costin Grigore — Oct 2010
This page contains all information related to the active measurements network, RIPE Atlas.

Learn more about the RIPE Atlas active measurements network.

You can also find a collection of use cases, reviews and other articles written by RIPE Atlas users.

RIPE Atlas 2012 Year in Review
RIPE Atlas 2012 Year in Review
Vesna Manojlovic — 16 Jan 2013

The RIPE NCC is grateful to all members of the RIPE Atlas community for your participation and support. This includes RIPE Atlas users, probe hosts, sponsoring organisations, participants in the RIPE Atlas anchor pilot, and all RIPE NCC members who support this activity. In this end-of-year review we describe the major achievements and changes implemented in 2012 in RIPE Atlas.… Read more

RIPE Atlas - Superstorm Sandy
RIPE Atlas - Superstorm Sandy
Emile Aben — 30 Oct 2012

After causing lots of damage in the Caribbean, superstorm Sandy is having a devastating effect on the US East Coast. We looked at the RIPE Atlas network to find out what effects this superstorm has on the Internet. Below are some preliminary results of what we saw.… Read more

Comparing TCP and UDP Response Times of DNS Root Servers
Comparing TCP and UDP Response Times of DNS Root Servers
Bert Wijnen — 17 Oct 2012

We did some measurements on the round-trip (RT) values of DNS queries for SOA (Start of Authority) records from our RIPE Atlas probes, over both UDP and TCP. We plotted the TCP/UDP ratios on graphs, and found that, as expected, for the majority of the measurements, it is around 2. However, we also observed other values for some servers (including K-root). Upon investigation, we found that the K-root servers were configured to allow at most 10 concurrent TCP connections. This caused several much bigger RT values than on other root servers. When we changed the configuration to allow for 100 concurrent TCP connections, K-root showed ratios similar to the other root servers.… Read more

Tags: atlas dns
RIPE Atlas - A Case Study of IPv6 /48 Filtering
Emile Aben — 26 Jul 2012

In this article I look at four different IPv6 destinations in different BGP set-ups and how these are seen by RIPE Atlas probes. This reveals some differences in reachability for the different networks, likely due to BGP route filtering. We see roughly 1% out of ~500 RIPE Atlas probes that can't reach a destination in an IPv6 /48 prefix (without a covering shorter prefix) out of IPv6 PA space, likely due to filtering.… Read more

Measuring IPv6 Connectivity with RIPE Atlas - How Do Others See Your IPv6 Network?
Measuring IPv6 Connectivity with RIPE Atlas - How Do Others See Your IPv6 Network?
Emile Aben — 17 Jul 2012

We've enabled RIPE NCC members to do IPv6-traceroutes from all RIPE Atlas probes to IPv6 destinations. Until now they could get the raw analysis results (text/JSON representations of traceroute results) for analysis. In this article we present a first experimental analysis and visualisation of the traceroute results.… Read more

Changes to RIPE Atlas Raw Data Structure
Changes to RIPE Atlas Raw Data Structure
Ann Barcomb — 18 Jun 2012

With the introduction of a new firmware version for RIPE Atlas probes, the structure of the measurement results will be changing. Anyone making use of the raw results is advised to read about these upcoming changes and to subscribe to our RSS feed or subscribe to our mailing list to be notified of future firmware releases.… Read more

Tags: atlas
UDM-4-LIRs Pilot @ RIPE64
UDM-4-LIRs Pilot @ RIPE64
Vesna Manojlovic — 16 Apr 2012

Behind this cryptic title is the announcement of awarding credits for RIPE Atlas User-Defined Measurements (UDM) to RIPE NCC members: Local Internet Registries (LIRs). Limited test program will start at RIPE64 meeting in Ljubljana, 16-20 April. … Read more

Tags: atlas

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