Abstract: “Zone Routing Protocol is a hybrid routing protocol in MANET. In real life scenario some links in MANET are unreliable due to interfering signals from neighboring network, ambient noise in the system and jamming signal from malicious nodes. These types of links are not accounted for in ZRP resulting in lower throughput, higher end-to-end delay and jitter. Furthermore zone radius is fixed in ZRP resulting in frequent zone switching for highly mobile nodes thereby increasing the control and maintenance overhead. Furthermore in ZRP border casting is used which does not guarantees shortest routing path and as consequence MZRP was developed which uses broadcasting and guarantees shortest path but with no path reliability and fixed zonal radius. We propose modified secure and efficient version of the MZRP coined as M2ZRP which takes into account the link SNR value as a measure of its reliability and security and also introduces the concept of variable zone radius. Qual Net network simulator i”

Keywords: ZRP, RWP, SNR, GPS, Group Mobility, Proactive