The quality of service provided by the protocols can be compared with the average delay. Fig.8
and Fig.9 present the comparisons of the average end-to-end delay for Optimized-AODV, AODV
and DSDV for 100 and 1000 nodes. The average ETE delay decreases with reduced mobility for
all three protocols. AODV shows largest delays in situations with high mobility due to its single
path nature and inefficient manner to handle route failure. Optimized-AODV, on the other hand,
shows low delays in all cases. This is because, instead of buffering data packets for a new route
to be found, Optimized-AODV forwards the data packets through alternative routes. DSDV
exhibits a low delay because of its continuous maintenance of routing information and no data
buffering for the data without valid routes. With the higher node density, overall end-to-end delay
for all the cases increases as number of hopes increases. In these cases the packet needs to