How does the replicator role function in Cisco SD-WAN?
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A. B. C. D.C.
In Cisco SD-WAN, the replicator role is used to improve the performance of multicast traffic in the overlay network. The replicator role is performed by a WAN Edge device, which replicates multicast traffic to the receivers in the same site.
When a WAN Edge device receives multicast traffic, it first checks whether there are any receivers in the same site. If there are, it replicates the traffic to those receivers. The WAN Edge device that performs the replicator role is selected dynamically based on the multicast group address and the site where the traffic originates. The replicator role can be performed by any WAN Edge device in the site.
To advertise the rendezvous point (RP) to the receivers, the WAN Edge device that performs the replicator role sends a PIM (Protocol Independent Multicast) join message to the RP. The RP then sends the multicast traffic to the replicator, which in turn replicates the traffic to the receivers in the same site.
Option A and B are incorrect because the WAN Edge devices perform the replicator role and not the vSmart Controllers. Option C and D are incorrect because the RP is advertised by the WAN Edge devices and not the vSmart Controllers. Additionally, the RP is advertised through the underlay network and not the overlay network.