When we ran a T3 satellite link we installed Mentat boxes on each end. See: http://www.mentat.com/skyx/skyx-nasa.html for a nice comparison of TCP vs their SkyX protocol. Bottom line: it works and no user had to change a thing in their TCP stack. Their product goes up to T3 speeds, though. If you have access to the end devices and want to "tune the stack" to achieve full thruput via high delay links see: http://www.psc.edu/networking/perf_tune.html

Right. Lots of these boxes exist. I would encourage folks to consider the implications of these boxes before putting them in general purpose use, though. They are sometimes OK, and sometimes they may not be. See RFC 3135 for a discussion. allman --- Mark Allman -- BBN/NASA GRC -- http://roland.grc.nasa.gov/~mallman/