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Site Administrator — 18 Jul 2013

Troubleshooting RIPE Atlas Probes: USB Sticks

Some of the third version of RIPE Atlas probes have recently had an issue with their USB sticks. We're investigating what may be causing this issue and have a possible solution, outlined below. (At the same time, we're also looking into a new hardware solution for the future.) If you've had trouble with your probe, please follow these simple steps. RIPE Atlas users everywhere will thank you for getting your probe back online - and we will, too!

Troubleshooting RIPE Atlas Probes: USB Sticks - Read More…

Open Season

In June 2016, the Organization for Economic Cooperation and Development (OECD) hosted a meeting of ministers to consider the state of the Digital Economy. The central message from this meeting was the message that: “Governments must act faster to help people and firms to make greater use of the Internet and remove regulatory barriers to digital innovation or else risk missing out on the potentially huge economic and social benefits of the digital economy.” All well and good, and as a piece of rhetoric, it seems to strike an appropriately positive note without straying far from what appears to be bland truisms of our time.

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How are you Deploying IPv6? Take this Survey

After 15 years conducting training on IPv6 in over 110 countries, I’ve been asked all sorts of questions. “How do I use my IPv6 addressing space?” “What prefix size should I provide to customers?” Although I have answers to these and many other best practice related questions, the one question, which I have not been able to answer to the best of my ability, is “What is the approach of other ISPs?”. So I decided to find out.

How are you Deploying IPv6? Take this Survey - Read More…

Developments in IPv4 Transfers

In May 2015, we looked at IPv4 transfers in the RIPE NCC service region and found signs of an emerging market. Both the number and size of transfers conducted under RIPE Policy showed an upward trend in the years 2013-2014. One year later, we take another look. Did this trend continue? What have been the effects of the inter-RIR transfer policy?

Developments in IPv4 Transfers - Read More…

New RIPE Atlas APIs

We've updated the RIPE Atlas APIs - and there's a comprehensive new manual to explain how to use them. As a result, the current (version 1) APIs are still available for now, but will be deprecated by the end of the year.

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There is Gold in this Stream - Sifting Through Used RIPE Atlas Traceroute Results

This work demonstrates the value of the results collected by RIPE Atlas independent of the original purpose for collecting them. Using all traceroute results from a particular day as an example, we first show that near real-time analysis of the result stream is feasible. Then we show that this has great potential for studying the packet layer of the Internet in general and for providing tools to network operators in particular. All this suggests a large and diverse potential for further work.

There is Gold in this Stream - Sifting Through Used RIPE Atlas Traceroute Results - Read More…

Fragmenting IPv6

The design of IPv6 represented a relatively conservative evolutionary step of the Internet protocol. Mostly, it's just IPv4 with significantly larger address fields. Mostly, but not completely, as there were some changes. IPv6 changed the boot process to use auto-configuration and multicast to perform functions that were performed by ARP and DHCP in IPv4. IPv6 added a 20-bit Flow Identifier to the packet header. IPv6 replaced IP header options with an optional chain of extension headers. IPv6 also changed the behaviour of packet fragmentation. Which is what we will look at here.

Fragmenting IPv6 - Read More…

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