The execution of real-life experiments provides meaningful insights on the performance of wireless sensor network solutions. Along with simulations, it is an important tool in the process of validating a new protocol. Our study case is GeoM, a geographic multicast routing protocol. We make use of the Future Internet of Thing IoT-LAB infrastructure in Strasbourg as the platform for the real-life experiments conducted for our solution. Our real-life experiments show that GeoM improves the network performance, when several metrics -packet loss, maximum energy consumption and latency -are simultaneously considered, compared to similar scheme routing. For scalability purpose we study correlation between the real-life experiment results and the values obtained in simulations, which proves to be consistent.