This preview shows page 1. Sign up to view the full content.
Unformatted text preview: worse performance for some sources. 2. DVMRP uses source-based trees, based on RPF and pruning (i.e., it assumes downstream routers have multicast subscribers until told otherwise). The reverse path forwarding is independent of the underlying unicast routing protocol. It only has a single mode of operation. PIM also uses source-based trees, but has two modes of operation: dense mode and sparse mode. Dense mode uses flood and prune based on RPF, similar to DVMRP (push approach). Sparse mode uses center-based trees with a rendezvous point (RP) to form the multicast tree upon request of the subscribers. It supports source-specific multicast (SSM)....
View Full Document
This note was uploaded on 01/17/2012 for the course CNT 5106c taught by Professor Helmy during the Spring '09 term at University of Florida.
- Spring '09