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

Foil 16 IP Multicast Routing: PIM (Continued)

From MultiCast Technologies and Rationale Large Web Application Class, CPS600/640 Fall 1997 -- Fall Semester 97. by Marek Podgorny * See also color IMAGE

Sparse-mode PIM: optimized for environments where there are many multipoint data streams with each data stream goes to a relatively small number of the LANs in the internetwork.
  • Reverse Path Forwarding wastes bandwidth for such traffic pattern.
  • Sparse-mode PIM works by defining a Rendezvous Point. Senders send data to and the receivers receive data from the Rendezvous Point. .
  • For each data stream the routers in the path will optimize the path automatically to remove any unnecessary hops.
  • Sparse-mode PIM assumes that no hosts want the multicast traffic unless they specifically ask for it.
PIM can concurrently support both modes



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

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sun Feb 23 1997