Routing protocols developed in MANET by assumption that the nodes in the network are supportive, as
the network is infrastructure less. But this consideration of routing protocols is always not trustworthy.
The nodes do not supportive all the time and they act as misbehaving nodes by not following the routing
protocols specifications. One such misbehaving activity is packet dropping from routing path. Various
intrusion detection systems are designed to prevent the packet dropping attack in MANET. These IDS
must consider the energy awareness during the intrusion detection otherwise performance of MANET
greatly influenced. Through simulation work concluded that the IDS must incorporate with energy
awareness of the nodes