A Mobile Ad-hoc NETwork (MANET) is a group of wireless mobile devices or nodes that communicate with each other without any help of a pre-installed infrastructure and centralized access points. The mobility and the easy use of mobile devices have motivated researches, to develop MANET protocols to exploit a reliable communication facilities provided by these devices. There are number issues such as medium access control, routing, resource management, congestion control and power control which affects the reliability of secured communication in MANET. Routing is an important issue in MANET since the establishment of effective communication between nodes is a challenging task due to the dynamic network topology.