Due to insufficient frequency band and tremendous growth of mobile users and number of services demanded by the users inspires the researches to find out the new aspects of wireless communication. As the number of nodes increases complexity of Mobile Ad-hoc NETwork (MANET) increases in various issues. For this reason various approaches has been produced to reduce the complexity such as cluster head technique and dominating set based gateway technique introduced. Another issue is distribution of IP in MANET. There are various approaches is given to assign the IP address but they are not much effective and each and every approach has its limitation.