RFC 9574: Optimized Ingress Replication Solution for Ethernet VPNs (EVPNs)
Recent RFCs 2024-05-24
Summary:
Network Virtualization Overlay (NVO) networks using Ethernet VPNs
(EVPNs) as their control plane may use trees based on ingress
replication or Protocol Independent Multicast (PIM) to convey the
overlay Broadcast, Unknown Unicast, or Multicast (BUM) traffic. PIM
provides an efficient solution that prevents sending multiple copies
of the same packet over the same physical link; however, it may not
always be deployed in the NVO network core. Ingress replication
avoids the dependency on PIM in the NVO network core. While ingress
replication provides a simple multicast transport, some NVO networks
with demanding multicast applications require a more efficient
solution without PIM in the core. This document describes a solution
to optimize the efficiency of ingress replication trees.