HELP! * GREY=local LOCAL HTML version of Foils prepared 17 Feb 1997

Foil 4 Multipoint Transmission Methods

From MultiCast Technologies and Rationale Large Web Application Class, CPS600/640 Fall 1997 -- Fall Semester 97. by Marek Podgorny * See also color IMAGE
Unicast:
  • Application sends a copy of each packet to each member of the multicast group. Simple to implement, but does not scale for large groups. It also requires extra bandwidth as the same information has to be carried multiple times even on shared links.
Broadcast:
  • Application sends a copy of each packet to a broadcast address. Even simpler than unicast to implement. However, the network must either stop broadcasts at the LAN boundary or send the broadcast everywhere. Sending the broadcast everywhere is a waste of network resources if only a small group actually needs to see the packets.

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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Page produced by wwwfoil on Sun Feb 23 1997