Beijing University of Posts and Telecommunications Huawei Technologies Huawei Technologies Huawei Technologies Huawei Technologies This document specifies experimental extensions to the GRASP protocol to enable information distribution capabilities. The extension has two aspects: 1) new GRASP messages and options; 2) processing behaviors on the nodes. With these extensions, the GRASP would have following new capabilities which make it a sufficient tool for general information distribution: 1) Pub-Sub model of information processing; 2) one node can actively sending data to another, without GRASP negotiation procedures; 3) selective flooding mechanism to allow the ASAs control the flooding scope. This document updates RFC8990, the GeneRic Autonomic Signaling Protocol (GRASP)[RFC8990].