The Interplanetary Internet is a next-generation space network architecture proposed by NASA which aims to establish a communication infrastructure in deep space and connect planets and satellites etc. The vision of future space exploration includes missions to deep space that require communication among planets, moons, satellites, asteroids, robotic spacecrafts, and crewed vehicles. These missions produce significant amount of scientific data to be delivered to the Earth. IPN Internet is an often disconnected and store-and-forward ‘network of Internet’ based on a wireless backbone with huge delays and error prone links. The first application of IPN Internet may be the “Mars network” which is now being developed to facilitate the exploration of Mars. In this paper, with concern to establishing the paths among the nodes, rovers and in order to transfer data with an efficient and scalable manner Wireless Routing Protocol (WRP) which uses the Bellman Ford algorithm to calculate paths is implemented with simulation results. Because of the mobile nature of the nodes this protocol introduces mechanisms which reduce route loops and ensure reliable message exchange.