w w w . i j e c t . o r g InternatIonal Journal of electronIcs & communIcatIon technology 47 Abstract Most Routing Protocols of Mobile Ad-hoc Networks (MANETs) were studied using open space models where nodes were able to move throughout the entire simulation area. However, a more realistic topology should account for restricted mobility of nodes, such as in an urban city setting where there may be concentrations of nodes within specific areas (such as within buildings) and low density of nodes in other areas (such as in parks and roadways). Consequently, the simulation area should be partitioned into smaller sub-areas with varying densities to model such areas, called dense/ sparse areas. Routing the packets in fully connected Mobile AdHoc Networks (MANETs) has been studied to great extent, but the assumption on full connectivity is generally not valid in a real system. The challenge here is to design a routing protocol to handle intermittently connectivity and dense/sparse topologies. This study characterized the effect of dense/sparse topologies on MANET routing performance and proposes an extension for an existing LAROD-LoDiS, routing protocol to work in such topologies called D-LAROD. The proposed protocol improved the performance of MANETs by reducing the communication overhead incurred during the routing processes by implementing a new density based geographical routing algorithm. The proposed routing algorithm was based on the density and connectivity of the nodes and not just the number of nodes.