Track 2 - Internet Routing and IP Network management (7-Oct-96)
Multicast
3) Protocols
B) PIM Sparse protocol
- Join toward Rendezvous-point
- for low traffic groups, can reduce forwarding state
by keeping on a single per-group tree (subsumes CBT)
- Requires Changes to IGMP (Join, Leave)
- CBT has pre-defined Rendezvous-point, PM defines by configuration