Greg Freemyer wrote:
Class D is used for Multi-cast and thus does not support TCP. UDP is fine. Not real common, but say you have a decent size LAN and you want to "broadcast" something across it, you can designate one of the Class D's for that.
I looked into doing NTP style broadcasts that way a few years ago. The issue is that every switch / router in the lan/wan you need to forward the multi-cast packets through has to be configured to do so.
I think some brokerage firms broadcast out various news shows to the traders desktops via IP broadcast mechanisms. I assume they use Class D packets to carry the UDP packets. (ie. If a trader wants to see what Fox News is showing, they have a video app on their desktop that can tune into the multi-cast packets and show it to them.
Class E I know of no use for, but I would not rule it out.
I have also seen Class D used with a VoIP PBX. My understanding of Class E is that it's "experimental". -- Use OpenOffice.org <http://www.openoffice.org> -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org