The document summarizes and compares two on-demand multicasting routing protocols for mobile ad hoc networks: AMRIS and ODMRP. AMRIS uses a shared delivery tree topology while ODMRP uses a mesh of nodes. ODMRP generally has higher packet delivery ratios than AMRIS, especially under higher node mobility, more senders, larger group sizes, and higher traffic loads. However, AMRIS has lower control overhead. The document provides details on the operation and differences between the two protocols based on message types, routing tables, maintenance procedures, and performance comparisons from simulations.