RFC 9692: RIFT: Routing in Fat Trees, T. Przygienda, Ed., et al., https://www.rfc-editor.org/info/rfc9692 #RFC This document defines a specialized, dynamic routing protocol for Clos, fat tree, and variants thereof. These topologies were initially used within crossbar interconnects and consequently router and switch backplanes, but their characteristics make them ideal for constructing IP 1/2