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Preparing for the 2016 Leap Second
Preparing for the 2016 Leap Second
Stephen Strowes — 15 Dec 2016

On 31 December this year, we're scheduled for another leap second. There are many stories about what leap seconds can do to infrastructure and applications, and rituals are built up around them. Such rituals stem from reality: leap seconds trigger poorly-tested code paths and run contrary to assumptions that system time always runs in one direction. It's useful to be aware of how your infrastructure handles leap seconds and how NTP servers handle them, so you can plan around the event. Here, we look at some of the NTP measurements the RIPE Atlas platform took around the last leap second, and approaches for handling them.… Read more

Scoring the DNS Root Server System
Scoring the DNS Root Server System
Geoff Huston — 12 Dec 2016

The process of rolling the DNS Root’s Key Signing Key of the DNS has now started. During this process, there will be a period where the root zone servers’ response to a DNS query for the DNSKEY resource record of the root zone will grow from the current value of 864 octets to 1,425 octets. Does this present a problem?… Read more

RIPE Atlas Success Story: Zoom-in on Germany
RIPE Atlas Success Story: Zoom-in on Germany
Vesna Manojlovic — 09 Dec 2016

Here is an example of how cross-pollination between two or more communities can create success. An overlap between IETF participants, RIPE Atlas users and listeners of a popular German podcast has led to growth in the deployment of RIPE Atlas probes (hardware devices that measure Internet infrastructure). We are still interested in expanding this platform in areas and networks that need more coverage. … Read more

Ambassador, You Are Spoiling Us
Ambassador, You Are Spoiling Us
Vesna Manojlovic — 01 Dec 2016

At the RIPE NCC, we are grateful for the contribution RIPE Atlas ambassadors make to the success of the RIPE Atlas measurements platform. In this article, we focus on a handy RIPEstat tool that can be used to visualise the results of their efforts. The tool provides a historical view of country-specific growth of RIPE Atlas probe numbers and allows for comparisons of up to four countries in the same graph. … Read more