BGP Large Communities Uptake - An Update
• 4 min read
We were asked by the community to look at the uptake of BGP Large Communities as observed by our Routing Information Service (RIS).
Emile Aben
Based in Amsterdam, NL
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About the author
Based in Amsterdam, NL
I'm a data scientist at the RIPE NCC. 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.
Published tags
What Happens When You Let Statisticians Loose on RIPE Atlas Data?
• 3 min read
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?
• 9 min read
In this article we look into the uptake of BGP Large Communities using the RIPE Routing Information Service (RIS).
Sketching Connectivity Between Users
• 5 min read
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?
• 6 min read
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
• 6 min read
Last week I attended the Passive and Active Measurement (PAM) conference in Berlin. In this article I present some highlights and take-aways.
Impressions from the Internet Measurement Conference 2017
• 6 min read
This year's Internet Measurement Conference (IMC) was held in London from 1 - 3 November. In this article we highlight some of the presented work that we think is interesting and that the RIPE community might find useful.
Insights from RIPE Atlas Probe Disconnections
• 4 min read
There are all kinds of reasons why RIPE Atlas probes might become disconnected. So, even though we'd like all probes to be connected all the time, disconnects can also tell us a useful story.
Bugfixing IPv6 Deployment Statistics
• 4 min read
We found a bug in a dataset that we've been producing for years.
DNS Root Server Transparency: K-Root, Anycast and More
• 8 min read
The RIPE NCC is operating K-root, one of the 13 DNS root servers. In this article we shed some light on the operational policies of K-root to clarify possible misunderstandings about how it is operated.
Ethics of RIPE Atlas Measurements
• 8 min read
This article is intended to make RIPE Atlas users aware of ethical issues that could arise when using RIPE Atlas. We do not intend to propose any new formal processes or procedures to address the relevant ethical issues, but we do want to encourage members of the RIPE Atlas community to consider th…
A Quick Look at the Attack on Dyn
• 6 min read
We used a number of RIPE NCC tools and data sets to take a quick look at the recent DDoS attack on Dyn’s infrastructure. We wanted to see if this could be found in the data produced by the RIPE Atlas community.
Reducing the BGP Table Size - A Fairy Tale
• 11 min read
The issue of the relative sizes of the IPv4 and IPv6 Internet in BGP came up during discussion at the APNIC/APRICOT meeting held in Auckland, New Zealand earlier this year.
Pinpointing Delay and Forwarding Anomalies Using RIPE Atlas Built-in Measurements - Or How I Learned to Stop Worrying and Love the Built-Ins
• 8 min read
Detecting network disruptions is a recurring problem. Clearly locating performance degradation is an important step in debugging and subsequently fixing connectivity issues.
Using RIPE Atlas to Look at IXPs in Berlin
• 4 min read
The IXP country jedi tool described in earlier RIPE Labs articles, can also be used to analyse the situation in a specific city. This time we look at Berlin.
The AMS-IX Outage as Seen with RIPE Atlas
• 3 min read
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
• 9 min read
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?
• 9 min read
With the MENOG 15 meeting taking place this week, we look at Internet measurements and statistics for countries in the MENOG region.
BGP Leaks in Indonesia
• 5 min read
In this article we are looking in some more detail at BGP leak in Indonesia and illustrate how RIPEstat visualisations can help to assess the impact.
“Thank you for this, Emil and Alun! From looking at the map you provided, it would be great to see an additional anchor in Katthammarsvik. Do you think it's worth trying to add one there?”
Thanks for the suggestion. I think that depends on the physical (cables) and logical (routing) topology near Katthammarsvik in relation to the cable landing there. In a quick search I didn't find datacentres there, which makes me think it would not be too useful. Experts on the local Internet infrastructure would probably be able to answer if it would make sense or not.
This RIPE Labs article has good information on how to avoid effects from unknown attributes showing up at your BGP routers: https://labs.ripe.net/author/berislav_todorovic/bgp-path-attribute-filtering-a-powerful-tool-to-mitigate-alien-attributes/
“Hi Emile, I remember attribute 28 showing up in several previous studies. Interesting to see it causing a problem this time! As bgpdump maintainer, I'd ask you to check out v1.6.2 or higher, since 2020 there is a '-u' flag to output unknown attributes in the short (-m) mode (helpfully submitted by Italo Cunha) - it may make your future parsing life much easier :) Kind regards, Colin”
Thanks Colin, I didn't know, and this would have speeded up my analysis if I had!
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!
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