ripe-atlas

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ripe-atlas@ripe.net

July 2015

22 participants
22 discussions

Probe and measurement archives vs. the APIs
by Robert Kisteleki 02 Jul '15

02 Jul '15

Dear All, We've observed recently that some users are using scripts to "crawl" through all the metadata provided by the probe and measurement APIs. This means that some people out there download basically the entire probe and/or measurement meta data set the system provides. As you can imagine, this is highly inefficient and keeps our servers busy. We believe that there could be better solutions. We have been providing the downloadable archive for probe metadata for some time now, and recently we've added the measurement metadata too. You can now reach these at http://ftp.ripe.net/ripe/atlas/ This way one can even get complete sets of metadata as far back as January 2015 for measurement specifications and March 2014 for probe data. Given the existence of these archives, we will apply a sane limit on how much metadata can be reached via the APIs. In practice this means that the API will not allow fetching results beyond, say, 10.000 (i.e. 500 pages of 20) entries. This is after the application of filters, so for example with no filters at all you could still access metadata of the 10k newest measurements, while if you filter for DNS measurements only, you could get the 10k newest of those, and so on. We believe this keeps the metadata API useful for the majority of the users, while the existence of the archive serves the remaining cases. Our plan is to make this change around the end of July. Regards, Robert Kisteleki

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RIPE Atlas traceroute visualisation - use cases
by Massimo Candela 01 Jul '15

01 Jul '15

Hello, We are creating a tool to visualise traceroute results coming from the RIPE Atlas measurement network. The tool will of course be available to everyone. To help make this tool as useful as possible, I’m gathering use cases of day-to-day operations and research activities that use traceroute measurements. I hope you can spend a few minutes to answer this email and tell me how you use traceroute measurements or what you would like to have in such a tool. For each use case you have in mind, please describe it briefly. Keep in mind our system can collect measurements from multiple sources to a single target repeatedly (e.g. every 60 seconds). Don’t focus only on traceroute data, but also on correlations among traceroutes and BGP, RTT, geolocations, DNS, and registry information (feel free to expand the list to other datasets). Thanks for your time. Your help is invaluable. Ciao, Massimo RIPE NCC

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