The Debogonisation of 2a10::/12
We are getting ready to start allocating from 2a10::/12, a new block of IPv6 addresses. In this process we did a couple of 'pre-flight' checks to check the usability of address space in this /12 block.
Emile Aben
Based in Amsterdam, NL
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About the author
Based in Amsterdam, NL
I'm a system architect/research coordinator at the RIPE NCC, where I work in the science group. I'm a chemist by training, but have been working since 1998 on Internet related things, as a sysadmin, security consultant, web developer and researcher. I am interested in technology changes (like IPv6 deployment), Internet measurement, data analysis, data visualisation, sustainability and security. I'd like to bring research and operations closer together, ie. do research that is operationally relevant. When I'm not working I like to make music (electric guitar, bass and drums), do sports (swimming, (inline) skating, bouldering, soccer), and try to be a good parent.
Impressions from the Internet Measurement Conference 2019
This year's Internet Measurement Conference (IMC) was held in Amsterdam from 21-23 October. In this article we highlight some of the presented work that we think is interesting and that the RIPE community might find useful.
How Diverse is RIS?
Is the current set of the RIPE Routing Information Service (RIS) peers providing a good level of diverse data? Let's look at some measurement results.
768k Day. Will it Happen? Did it Happen?
Will there be a 768k day similar to the 512k day we saw a few years ago? See here what we can see in the RIPE Routing Information Service (RIS).
What Happens When You Let Statisticians Loose on RIPE Atlas Data?
Humans are pretty good at finding patterns in network measurements, but it can be difficult to automate this so one can process many time series at the same time. Now we have an expert in the house who can help us with this.
BGP Large Communities - Uptake by the Community at Large?
In this article we look into the uptake of BGP Large Communities using the RIPE Routing Information Service (RIS).
Sketching Connectivity Between Users
We're looking at user-to-user connections, based on RIPE Atlas measurements and ISP's end-user market share estimates provided by the APNIC.
Does The Internet Route Around Damage in 2018?
On the night of 9 April 2018, DE-CIX Frankfurt experienced an outage. As this is one of the largest Internet Exchange Points, this is an interesting case to study in more depth to see what we can learn about Internet robustness. We plan to update this article if new information/corrections flow in.
Report from the Conference on Passive and Active Measurements
Last week I attended the Passive and Active Measurement (PAM) conference in Berlin. In this article I present some highlights and take-aways.
LIRs: Test Your IPv6 Reachability Using RIPE Atlas
RIPE Atlas is releasing a new service for Local Internet Registries (LIRs): if you are a member of the RIPE NCC, you can test the reachability of your IPv6 website from all IPv6-capable RIPE Atlas probes (currently more than 600).
Networks with IPv6 - One Year Later
One year after we released the interactive graph to show the percentage of ASes announcing IPv6 prefixes, we looked at the progress made since then.
The Curious Case of the Crooked TCP Handshake
In this article we will be delving into the behaviour of the Linux implementation of TCP, and looking at the way in which TCP establishes a connection. There are socket options in Linux that cause the TCP handshake to behave in a rather curious way.
IPv6 RIPEness: Production & Updates
Following your feedback, we decided to make IPv6 RIPEness a production service. We are currently working on some new features. Stay tuned!
Analysis of Increased Query Load on Root Name Servers
After we observed increased query load on the root name severs recently, we did some investigation and analysis which is described in the article below.
Measuring World IPv6 Day - First Impressions
World IPv6 Day took place on 8 June 2011. The RIPE NCC did a number of measurements both before and during World IPv6 Day. We've done an initial analysis of the data and would like to share our first impressions and results with you.
World IPv6 Day - Asymmetric 6to4 Measurements
RIPE NCC and BBN have been working on measuring the impact of 6to4 on the latency of Internet traffic. This article describes the measurement techniques used for this survey, and some initial findings based on measurements conducted at BBN.
IPv6 RIPEness - One Year Later
A year ago we introduced IPv6 RIPEness - a system that rates IPv6 deployment of Local Internet Registries based on certain criteria. It was meant to encourage LIRs to deploy IPv6. Now, one year later, we are proud to present the progress of this project.
Resource Certification Statistics
Since we started providing the certification service on 1 January 2011, many LIRs made use of the service. In this article you can see some graphs showing the number of certificates in place today, as well as certified address space.
Interesting Graph - How Complete is the RIPE Routing Registry
It is often claimed that the Internet Routing Registry is not accurate and complete enough. Is this really the case? In this article we are looking at how many organisations that receive an Autonomous System Number from the RIPE NCC use the RIPE Routing Registry.
Code for looking into AS Adjacency changes is available here: https://github.com/emileaben/as-neighbour-diff
Code on how to create graphs like Figure 1 ( ie. BGP view of how networks in a country interconnect ) is available here: https://github.com/InternetHealthReport/country-as-hegemony-viz
NOG Alliance is helping out network operators in Ukraine: https://nogalliance.org/our-task-forces/keep-ukraine-connected/
An effort related to keeping Urkanian servers/websites online by the Dutch Cloud Community: https://dutchcloudcommunity.nl/community/cloud4ukraine/
We got a request for the HHI scores for other countries. I've put these in a small repo on github together with the code that generated this. repo: https://github.com/emileaben/hhi-eyeballs HHI scores for 2022-03-07 are available here: https://raw.githubusercontent.com/emileaben/hhi-eyeballs/main/eyeball-hhi.2022-03-07.csv
“This is awesome work, thank you! Do you maybe have the script/notebooks/sources to reproduce this? This could be potential used for other countries.”
Hi Jenneth, The observable notebook we used for this is here: https://observablehq.com/@aguformoso/internet-outages-as-seen-by-ripe-atlas . It's a little rough around the edges, so it would be great if you could help improve it!
Thanks for your comment Maxime. I would love to see more analysis too, and the tool allows people to do this. Take for instance this thread on Twitter where Jason Livingood analyses the signals for the US: https://twitter.com/jlivingood/status/1245142990336688130 If others have analysis for specific countries they want to share it would be great to have them collected, for instance as comments to this RIPE Labs post!
“One may assume that, if some people delayed the changes, other people rushed in to adapt the networks to the increased load? Both behaviour may explain why the change rate is more or less the same?”
I think it would be interesting to dig into this data deeper indeed. I looked at splitting this out per country a bit, but could try figure out if there are trends in the sets of ASNs in this timeseries. Would you be willing to look at this? My colleague Vesna is doing a virtual hackathon around Internet and Corona ( https://labs.ripe.net/Members/becha/hackathons-in-the-time-of-corona ), I'd love it if we could collaborate around this. Let me or Vesna know, or hop on to the conf calls, Mon 2pm UTC ( 3pm Paris timezone :) )
“Ghost routes: https://www.sixxs.net/tools/grh/what/”
I've added a reference to the different names 'stuck routes' and 'ghost routes' for this phenomenon at the beginning of the post. Thanks for the pointer!
“Interested in repeating this analysis for 2018 world cup?”
Hi Dan, we have no plans of repeating this analysis this time. This type of signal is still there, see for instance https://twitter.com/search?q=%40ohohlfeld%20%23worldcup&src=typd for a couple of graphs that show the impact in various places.
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