Internet Disruptions in Sudan
Significant Internet disruptions are happening in Sudan, possibly as a reaction to riots. We use RIPE NCC tools to get a better understanding of what is going on.
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.
IPv6 ASNs - Network Size Matters
This article provides statistics about how much IPv4 address space is being announced by networks (ASNs) that are also announcing IPv6 address space. Currently this is about 70% of IPv4 address space.
IPv6 RIPEness - Implementing the Fifth Star
In this article we present the first publicly available beta version of the fifth IPv6 RIPEness star. This measures real IPv6 deployment from LIRs in the RIPE NCC service region. The methodology is what we think to be the best compromise yet between simple and fair. In this first version, 573 LIRs …
Networks With IPv6 Over Time - A Short Update
We regularly check the status of IPv6 deployment in the RIPE NCC service region, but also in other regions. One way to measure IPv6 deployment is to look at the percentage of networks (Autonomous Systems) announcing IPv6 prefixes and to follow the developments over time.
Monitor the Syrian Blackout with RIPEstat
The RIPE NCC developed a RIPEstat widget that provides a near real-time feed of what BGP updates and withdrawals we see from Syrian IP address space.
RIPE Atlas: Hurricane Sandy and How the Internet Routes Around Damage
In this article we look at some of the effects Hurricane Sandy had on the Internet data plane, as we can see them in traceroutes done by RIPE Atlas.
RIPE Atlas - Superstorm Sandy
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.
RIPE Atlas - A Case Study of AAAA Filtering
At the recent RIPE Meeting, the question was raised whether Internet users would see significant filtering of AAAA DNS queries or replies. We used RIPE Atlas measurements to provide an answer to this question.
IPv6 RIPEness - More Stars
IPv6 RIPEness helped in creating awareness and got people into action with regards to their first steps towards deploying IPv6 in the RIPE NCC service region. Up until now IPv6 RIPEness didn't measure actual IPv6 deployment. In this article we propose a measure (a "5th star"), which attempts to mea…
Top Ten Olympic Winners and Indicators of IPv6 Preparedness
Olympic fever didn't escape us here at the RIPE NCC!
The AMS-IX Outage as Seen with RIPE Atlas
During the RIPE 70 Meeting in Amsterdam this week (on 13 May around 10:00 UTC), we experienced a network outage at AMS-IX. Let's see how this was monitored by various tools.
On the Diversity of Interdomain Routing in Africa
In 2013 and 2014 we looked into measuring Interdomain Routing in Africa using the RIPE Atlas infrastructure. This resulted in a paper published at the PAM (Passive and Active Measurement) 2015 conference. Here we present some highlights of this research.
How Does the MENOG Region Measure Up?
With the MENOG 15 meeting taking place this week, we look at Internet measurements and statistics for countries in the MENOG region.
One Year Later: Who's Doing What With IPv6?
On the anniversary of the World IPv6 Launch, this article takes a look at the readiness of networks to deploy IPv6, using statistics from the RIPE NCC service region and beyond.
IXP Traffic Levels During the Stratos Skydive
Together with Euro-IX we take a look at Internet Exchange Point (IXP) traffic levels during Felix Baumgartner's 39-kilometre jump to Earth, and we take a closer look at what exactly we can see at IXPs.
Comparing TCP and UDP Response Times of DNS Root Servers
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 …
Number of New LIRs and their IPv6 RIPEness
We observed an increase in the number of new LIRs in the RIPE NCC service region. Many of these new LIRs show 1-star IPv6 RIPEness.
Internet Traffic During the 2012 Olympics
Following on from the European Championship earlier this year, we looked at changes in Internet traffic volume at Internet Exchange Points (IXPs) during the Olympics. This is a joint project with Euro-IX.
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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