Speaker
Description
DNS operators use IP Anycast to make their DNS zones available throughout the world with improved resilience and faster response times. But which points of presence do they choose to optimize the performance of their anycast deployment?
Oftentimes, operators guess and/or empirically test anycast configurations over many iterations. We propose Autocast: a simple heuristic method to approximate the optimal anycast site configuration using only IP unicast active measurements. In our experiments, we predicted the median latency of clients to a proposed anycast configuration with a precision of +- 1ms, without having to do anycast BGP announcements.
We plan on applying this method together with our operations team in their efforts of moving .nl's anycasted authoritative nameservers to a new infrastructure provider later this year.
Summary
Using active measurements to approximate an optimal anycast configuration.
| Talk duration | 20 Minutes (+5 for Q&A) |
|---|---|
| Other conferences? | I will also submit this to the CENTR R&D workshop which is held the week before OARC. In my experience, the audience is quite different (of course with some overlap, especially since it's this close). |
