September 29, 2017 to October 3, 2017
Fairmont San Jose
US/Pacific timezone

Verfploeter: Broad and Load-Aware Anycast Mapping

Sep 29, 2017, 11:45 AM
Regency 2 Ballroom (Fairmont San Jose)

Regency 2 Ballroom

Fairmont San Jose

170 S Market Street, San Jose, 95113, CA, USA
Standard Presentation Public Workshop Public Workshop


Wes Hardaker (USC/ISI)


IP anycast provides DNS operators and CDNs with automatic fail-over and reduced latency by breaking the Internet into catchments,each served by a different anycast site. Unfortunately, understanding and predicting changes to catchments as sites are added or removed has been challenging. Current tools such as RIPE Atlas or commercial equivalents map from thousands of vantage points (VPs),but their coverage can be inconsistent around the globe. This paper proposes Verfploeter, a new method that maps anycast catchments using active probing. Verfploeter provides around 3.8M virtual VPs, 430 times the 9k physical VPs in RIPE Atlas,providing coverage of the vast majority of networks around the globe. We then add load information from prior service logs to provide calibrated predictions of anycast changes. Verfploeter has been used to evaluate the new anycast for B-Root, and we also report its use of a nine-site anycast testbed. We show that the greater coverage made possible by Verfploeter's active probing is necessary to see routing differences in regions that have sparse coverage from RIPE Atlas, like South America and China.
Talk Duration 30 Minutes

Primary authors

Aiko Pras (University of Twente) Mr John Heidemann (USC/Information Sciences Institute) Pieter-Tjerk de Boer (University of Twente) Dr Ricardo Schmidt (University of Twente) Wes Hardaker (USC/ISI) Wouter de Vries (University of Twente)

Presentation materials