台灣地區BGP路由統計分析

Abstract

本文將藉由所提出的台灣地區路由統計系統探討國內ISP(Internet Service Provide)對於IP位址與AS 號碼(Autonomous System Number, ASN) 在BGP路由表中之實際使用狀況。透過各ISP所提供的BGP路由表，以及全球之Whois資料庫，將BGP路由表中顯示的IP位址與AS號碼之實際使用狀況與Whois資料庫中之實際核發狀況進行對照比較，來分析台灣地區IP位址與AS號碼之實際使用狀況，進而達到網際網路資源使用之深入管理。目前國外相關的BGP路由統計均以全球BGP路由表來進行統計分析，並無特別針對台灣的路由狀況來進行。有鑑於此，我們聯合台灣地區主要ISP共同參與，開發完成台灣地區路由統計系統，並持續進行資料的蒐集與分析，呈現出目前IP位址及 AS 號碼實際的使用狀況，並偵測不正常使用的IP位址及AS號碼，讓大家瞭解到台灣地區Internet路由演進的軌跡，為台灣網際網路發展留下歷史見證。

This study probes into the practical usage of the IPv4 address and Autonomous System Number (ASN) according to the BGP routing table provided by Internet Service Providers (ISP) in Taiwan. The status quo of the usage in the global BGP routing is only gathered statistics by worldwide routing tables, but there is no specific routing information related to Taiwan. In order to effectively manage internet resources, we allied with Taiwan’s ISPs to develop the statistics system of the BGP routing table related to Taiwan. Furthermore, we compare with the data in BGP routing tables, provided by Taiwan ISPs, and those in the Whois database to analyze the practical usage of the IPv4 address and ASN in Taiwan. Our contributions not only can present the practical usage of the IPv4 address and ASN in Taiwan, but also can record the growth trend of the routing table, and detect illegal usage of the IPv4 address and ASN.