On Mar 3, 2004, at 11:24 AM, Stephen Perciballi wrote:
To the best of my knowledge, MCI/UUNET ~was~ the first to implement this. I've been using it for well over a year now.
Indeed. One could even get "fancy" and set of different community sets to allow customers to drop traffic only on peering routers (as opposed to customer or all routers, etc..). The "Customer-Triggered Real Time Blackhole" tutorial that Chris, Tim and I gave in Miami talks about how to go about doing this. One step further is uRPF coupling with blackhole routing for sourced- based drops, though I suspect you probably won't want to do this with customers :-) Finally, the BGP Flow Specification stuff provides a start at a more granular BGP-based method by employing new AFI/SAFI. If you've got feedback please pass it along. http://www.tcb.net/draft-marques-idr-flow-spec-00.txt -danny