Configuring the ECN330-switch
4751553-KDU 137 365 Uen D 2006-06-16
packet is received through an interface that the router determines to be the
shortest path back to the source (based on interface metrics), then the router
forwards the packet on all interfaces except for the incoming interface.
Figure 217 DVMRP Broadcasting
The router will transmit a prune message back out the receiving interface (the
parent interface) to its upstream neighboring router if there are no group
members on its child interfaces. A prune message tells the upstream router to
stop forwarding packets for a particular source-group pair for the prune lifetime.
Figure 218 DVMRP Pruning
source
flooding
potential
hosts
pruning
source
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