How does the replicator role function in cisco SD-WAN?

WAN Edge devices are not responsible for advertising rendezvous points in the replicator role; that is a control plane function handled by vSmart controllers.

In Cisco SD-WAN, the replicator role is a function of the vSmart controller, which advertises rendezvous points (RPs) to interested receivers using OMP over the secure overlay network. This allows WAN Edge devices to discover the RP for multicast groups and establish tunnels to receive multicast traffic, with the vSmart acting as the control plane element for multicast routing.

WAN Edge devices do not advertise rendezvous points as part of the replicator role; this is a vSmart controller function.

vSmart controllers advertise rendezvous points over the overlay network using OMP, not the underlay network, to ensure secure and controlled distribution of multicast routing information.