China Unicom China Unicom China Unicom China Unicom Centec Centec Centec Centec This document defines a YANG data model for configuring and observing resilient next-hop groups. A fixed bucket table separates flow hashing from member selection. The model augments the routing management model with shared groups, static route bindings, weighted bucket targets, restoration policies, and forwarding-confirmed operational state. The specification defines distinct quota and reference restoration policies, consistent timer semantics, and an administrative rebalance action protected by a state-generation precondition. It standardizes management behavior for this class of implementation; it does not define a new routing protocol, hash algorithm, or transport ordering guarantee.