BGP - The Border Gateway Protocol - Large collection of BGP routing resources. Includes BGP presentations, whitepapers, tools, drafts and RFCs. BGP implementation in perl - bgpd.pl is a partial implementation of the BGP protocol written in Perl. It has been designed as a library to be used in other applications and as a tool to monitor BGP routing updates. Border Gateway Protocol - BGP - Internet Encyclopedia's BGP4 overview. BGPv4 Security Risk Assessment - White paper that discusses the risks of spoofing, hijacking, route flapping, de-aggregation, route injection, and resource saturation attacks. Originally published in the ISP Essentials Supplement. Multi-Homing With and Without BGP4 - Avi Freedman's column explains the basic concepts of BGP4. Originally published in ISP Tech Talk. BGP Expert - Information, news, books and courses. Using the Border Gateway Protocol for Cisco Interdomain Routing - This case study examines how BGP works and how you can use it to participate in routing with other networks that run BGP. iBGPlay - Utility that graphically displays and animates BGP routing data. Available as a partly-hosted service (client-only) or as a stand-alone system (client and server).