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 Monday, August 01, 2005

Geoff Huston, APNIC, in the ISP Column for August 2005, has authored an article entitled Exploring Autonomous System Numbers. It examines Autonomous System (AS) Numbers and the role they play in Internet routing and discusses the near-term exhaustion of the unallocated pool of AS numbers in an expected 2010 timeframe. The article also discusses a necessary transition of increasing the AS number field size in the Border Gateway Protocol (BGP) inter-domain route protocol (from 2 to 4 bytes as defined in this current draft).