Last draft appeared to be http://www.watersprings.org/pub/id/draft-retana-marp-02.txt which expired Sept 2003 (Abstract: defines a protocol to quickly determine the existence or aliveness of devices attached to a shared media (broadcast) subnet.) First read about it in this presentation, where it was billed as an alternative to fast hellos: http://routing.internet2.edu/wg-meetings/20021029-I2rwg-slides/20021029-daug... The idea was that a switch could notify connected routers of link failures immediately - there would be no need to wait for the dead and hold-timers to expire. Is this idea still flying? There appears to be very little on the net about it, except what I've mentioned above. Sam