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Application of the RRPP Multi-instance Ring and Smart Link Network
In Figure 18-28, 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.