When placing a multicast replicator outside the local network with no local sources or receivers, which component is not required?

PIM interfaces are not required because the multicast replicator is outside the local network and there are no local sources or receivers. PIM (Protocol Independent Multicast) is used to build multicast distribution trees within a network segment where sources and receivers exist. Since the replicator is acting as a relay between different networks without local participation, PIM on its interfaces is unnecessary. OMP (Overlay Management Protocol) is essential for advertising routes and TLOCs across the SD-WAN fabric, which is critical for the replicator to know where to send traffic. TLOCs (Transport Locators) are the physical interfaces that connect the SD-WAN devices to the underlay network, and are fundamental for forwarding traffic. Overlay BFD (Bidirectional Forwarding Detection) is used for fast detection of forwarding path failures, ensuring high availability for the multicast traffic traversing the overlay.