Bidirectional Shared Trees - Cisco Nexus 7000 Series Configuration Manual

Overview

Bidirectional Shared Trees

Figure 3: Shared Tree
Bidirectional Shared Trees
A bidirectional shared tree represents the shared distribution path that the multicast traffic takes through the
network from a shared root, or rendezvous point (RP), to each receiver. Multicast data is forwarded to receivers
encountered on the way to the RP. The advantage of the bidirectional shared tree is shown in the figure below.
Multicast traffic flows directly from host A to host B through routers B and C. In a shared tree, the data from
source host A is first sent to the RP (router D) and then forwarded to router B for delivery to host B.
The notation (*, G) represents the multicast traffic from any source on group G. The bidirectional tree in the
figure below is written (*, 224.2.2.2).
Cisco Nexus 7000 Series NX-OS Multicast Routing Configuration Guide
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