v
Truncated
Reverse Path Broadcasting (TRPB) was developed to overcome the limitations of
Reverse Path Broadcasting.
v
With
information provided by IGMP, multicast routers determine the group memberships
on each leaf subnetwork and avoid forwarding datagrams onto a leaf subnetwork
if it does not contain at least one member of a given destination group. Thus,
the delivery tree is "truncated" by the router if a leaf subnetwork
has no group members.
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