Application of the RRPP Multi-instance Ring and Smart Link Network
In Figure 1, CEs are dual-homed to UPEs through Smart Link technology.
Four UPEs and one PE-AGG construct a ring. After RRPP multi-instance on the ring is enabled, traffic flows into the backbone network through the PE-AGG.
Nodes on the RRPP ring and the PE-AGG must support Smart Link.