Mobile ad-hoc networks are autonomous networks of intelligent mobile nodes. Designing an efficient routing protocol with goal efficient route establishment is still a burning research issue. Routing protocols are broadly classified into proactive and reactive protocols on the basis of their nature of working. In this paper, the authors present comparative simulation analysis of two proactive protocols namely, Optimized Link State Routing (OLSR) and Destination-Sequenced Distance Vector (DSDV). Simulations have been carried out multiple times using Network Simulator-2.35 (NS-2.35), on random scenario patterns and compared in two environments (OLSR and DSDV) by varying the network size and mobility of nodes.