China Mobile Arrcus Huawei Technologies Yunsilicon Technology NebulaMatrix FARE-BGP enables weighted ECMP load balancing using a path-bandwidth extended community. FARE-in-SUN extends this mechanism from switches to GPUs for scale-up networks, which are typically multi-plane. Large AI training clusters are increasingly adopting multi-plane scale-out network topologies. This document further extends FARE-BGP from switches to RoCE NICs (RNICs) for such multi-plane scale-out networks. The document also presents two techniques to address route scalability concerns caused by the injection of numerous host routes.