MANET (Mobile Ad hoc NETwork) is an ad hoc network that can be formed on demand and allow nodes to communicate without any infrastructure. On demand set up of MANET makes it very popular as compared to the traditional wireless network. In traditional wireless network fixed point/central point is required for overall function of the network, whereas MANET is self-organized and infrastructure free network which may be considered as a good approach for some specific applications such as battlefield survivability, communication in the natural or manmade disaster areas, emergency/rescue operations, vehicular ad hoc network for communicating between vehicles to provide traffic information and warnings.