This paper presents the comparative study and
Performance analysis of various ad hoc routing protocols
(OLSR, AODV and ZRP) on the basis of end-to-end
delay, packet delivery ratio, throughput, jitter performance
metrics. The study of these routing protocols shows that
OLSR is more efficient in high density networks with highly
sporadic traffic. OLSR requires that it continuously have
some bandwidth in order to receive the topology updates
messages. As well, AODV keeps on improving in packet
delivery ratio with dense networks. The performance of all
protocols was almost stable in sparse medium with low traffic.
It has been concluded that performance of ZRP is better for
high mobility and high traffic networks where as the OLSR
and ZRP performs well in low mobility and low traffic
networks. The future work suggested that the effort will be
made to enhance ad hoc network routing protocol by tackle
core issues.