http://www.rfc-editor.org/rfc/rfc3882.txt
RFC 3882: Configuring BGP to Block Denial-of-Service Attacks, D. Turk2004-09-01T23:00:00-00:00This document describes an operational technique that uses BGP communities to remotely trigger black-holing of a particular destination network to block denial-of-service attacks. Black-holing can be applied on a selection of routers rather than all BGP-speaking routers in the network. The document also describes a sinkhole tunnel technique using BGP communities and tunnels to pull traffic into a sinkhole router for analysis. This memo provides information for the Internet community.