MANET has gained popularity in various fields as in vehicles, data transmission and bulk data transmission to a large single set of nodes. To accomplish this task routing protocol employ an important role in MANET. Different types of routing protocols have been proposed for different task to be done. Most of the parameters have been considered during the establishment of routing protocols. It is concerned with the various factors such as energy efficiency, routing protocols, security and

more »

... other factors. In the current work we are going to work with multicast routing protocol (IODMR and AAMRP) with security as major aspect. Multicasting is the ability to send packets to and receive packets directed at a subset of nodes in a network. We are applying the SBPGP model with these protocol and will find out their performance under certain conditions with various malicious attacks can be handled efficiently on MANET by using different size of encryption bit keys on the basis of throughput, end-to-end delay and packet delivery fraction.