Brocade FastIron Ethernet Switch IP Multicast Configuration Guide - Manual (Page 85)

sends a prune message to R1. With R4 in a prune state, the resulting multicast delivery tree would
consist only of leaf nodes R2 and R3.
FIGURE 3 Transmission of multicast packets from the source to host group members
FIGURE 4 Pruning leaf nodes from a multicast tree
IPv4 Multicast Protocols
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