The field of mobile Ad-hoc network has gained an important part of the interest of the researchers and become very popular in last few years. This paper highlights the functioning of various type of protocols used for wireless Ad-hoc networking. The most widely used ad hoc routing protocols are Ad-hoc On-Demand Distance Vector (AODV), Destination Sequenced Distance Vector (DSDV), Dynamic Source Routing (DSR), OLSR (optimized link state Routing) and temporally Ordered Routing Algorithm (TORA), Cluster head Gateway Switch Routing Protocol (CSGR). This paper endeavors to endow with a wide-ranging synopsis of this vibrant field. Foremost this paper explains the imperative task that mobile ad hoc networks participate in the growth of future wireless technologies. Then, it reviews the most modern research activities in these areas, including a summary of MANET's uniqueness, capabilities, relevance, and devise restraints. The paper concludes by presenting a set of challenges and problems requiring further research in the future.