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Learn about AS-SETs and their critical role in Internet routing infrastructure through this 32-minute conference talk from NANOG. Discover what AS-SETs are as special objects representing groups of Autonomous System Numbers (ASNs) that form the foundation for IRR-based route filtering. Examine the growing problem of excessively large AS-SETs that have expanded to include over 1,000 ASNs each, with current analysis revealing 2,192 such problematic AS-SETs that effectively whitelist much of the routing table and render route filtering ineffective. Explore practical strategies for identifying and managing these oversized AS-SETs to maintain effective Internet routing security. Gain insights from Doug Madory, Director of Internet Analysis at Kentik and recognized expert in Internet infrastructure analysis, who has been dubbed "The Man who can see the Internet" by The Washington Post for his work in identifying significant Internet structure developments including national blackouts, BGP hijacks, and submarine cable activations.
