Aikido, programming, system administration, and other things I find interesting


Some notes from the MAT working group  at RIPE64

Measuring networks in Norway

Networks are critical infrastructure

A signaling storm in a Norwegian mobile provider coincided with bad flooding in real life, causing very bad public feeling about the reliability of emergency handling.

So a number of operators are focusing on measurements, both in academia and in fixed and mobile broadband.

They measured connectivity between nodes with ping. Mobile operators were less reliable than expected, 1 in 3 connections has a downtime of more than 3 minutes per day. Different operators are good in different places, and have different failure patterns. So connecting to multiple operators improves reliability.

RIPE Atlas

RIPE atlas is a platform for active measurements composed of small probes hosted in currently 1500 places around the world. Data is available to the community in general.

Previously you had to register for RIPE atlas separately, but now there is single sign on, and LIRs are a special, privileged category of users.

User defined measurements based on type, area and targets. Measurements are priced in credits (earned by hosting or sponsoring probes), and are scheduled in a way that avoids overloading the system. Credits and limits can be increased given a good reason (


RIR, BGP GeoIP, etc data from all RIPE databases and histories. Same single sign on as RIPE atlas.

Measuring IPv6 with advertisements for fun and profit


network science at scale

Measuring speed data with full user knowledge in return for non-anonymized data. Currently (after 2 years) 500 TB of open network data from worldwide.

Tools allowing you to run SQL queries against a portion of the dataset.

Measurement strategy of RIPE NCC

RIPE Labs, RIPE stat, RIPE Atlas

INRDB Data Store


Related Posts

Making an IPv6 addressing plan

By now, hopefully, you not only realize that you need IPv6, but that you need to replace any ISP that is not able to give you IPv6 connectivity with one who can. But now, you have a different problem. Your ISP probably gave you more addresses than exist on the whole IPv4 internet, just for […]

Read More

IPv6 working group, part 2

Based on a bunch of lectures given at ripe64 at the IPv6 working group Experiences in setting up Automatic Home Networking Dream: Networks shall have address space routers shall know where to send packets names resolve to addresses human touch is not required All this can be done with only one subnet. But is that enough? […]

Read More

Leave a Reply

Your email address will not be published. Required fields are marked *