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).
Emile Aben
Based in Amsterdam, NL
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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.
Website: https://www.caida.org/~emile
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.
Internet Access Disruption In The Gambia - 2016
• 4 min read
We had a look at various RIPE NCC data sets to see what we can learn from yet another country-wide Internet outage in 2016.
Large BGP Communities - Largely Accepted Now?
• 11 min read
Large BGP Communities are an addition to BGP that solves a communication problem between networks that want to use 32-bit AS Numbers. We measured how Large BGP Communities behave "in the wild" and if they create any problems.
“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.
“@emileaben Rather than standardizing human-readable output format, why not emitting a standard structured format, separating the network part (traceroute) and the visualisation part (a tool using the structured output format). Such a format already exists, in RFC 5388. I let you do the same in JSON :-)”
thanks for the interest in the topic Stephane. You hit the nail on the head, the main idea was to standardise a structured format for traceroute. I notice a lack of enthusiasm for RFC5388, probably due to it's verbosity. quick test shows that gzip compression of RFC5388-style results would need 3x more storage relative to plain-text traceroute results. But the RFC is likely very useful to see if we cover all bases in a slimmer structured output format.
One other activity that may be worth mentioning here: We organised a get-together for traceroute implementers. As many traceroute implementations do things slightly different, a bit more coordination can help in making things more consistent, for instance in output formats.
“I'm trying to work with the ixp-jedi tool. In this step: ## measure.py This script runs one-off measurements for the probes specified in _probeset.json_ and stores their results in _measurementset.json_ This uses the RIPE Atlas measurement API for measurement creation, And it needs a valid measurement creation API key in ~ / .atlas / auth When trying to execute the script ./measure.py I get the following and I do not know how to solve it. Authentication file /root/.atlas/auth not found Please, I need your help.”
hi, thanks for trying to use the tool. i hope the docs on github are clear enough: https://github.com/emileaben/ixp-country-jedi/#measurepy --- This script runs one-off measurements for the probes specified in probeset.json and stores their results in measurementset.json This uses the RIPE Atlas measurement API for measurement creation, and it needs a valid measurement creation API key in ~/.atlas/auth . For more information on RIPE Atlas API keys see https://atlas.ripe.net/docs/keys/ --- if not let me know how to improve that. if you are interested in country-level monthy runs. these are available at: http://sg-pub.ripe.net/emile/ixp-country-jedi/history/
“Hi, Is there a way to download multiple days dataset without having to do them individually? Also do you have any API's which will permit me to download the datasets using wget?”
Hi Meenakshi, I think you'll have to download the files individually. I think, if your RIPE Access account doesn't have 2 factor authentication, you can use wget to download the files with the --user and --password options.
While we were busy pushing this post out, it looks like the Gambian Internet was restored, roughly around 12h UTC on 2 December. RIPE Atlas probes came online again, and we see 6 out of 7 ASNs in RIS data again.
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