Crawling Alice Looking Glasses at IXPs to Quantify BGP Route Diversity

Internet Exchange Points (IXPs) are essential for enhancing regional Internet performance by enabling efficient connections between ASes. In this poster, we show that BGP routes can be easily obtained from Alice Looking Glass servers and use this data set to study route diversity at IXPs. We develop a scraper that periodically collects route information from 16 major IXPs, maintaining a historical view through periodic snapshots. Our preliminary analysis, conducted on one of the largest European IXPs, reveals that approximately 50% of prefixes have alternative paths.