Abstract: A Mobile Ad-hoc network (MANET) is a self-organizing and adaptive in environment. A MANET consists of a set of mobile nodes that have to collaborate, interact and communicate to complete an assigned operation. These applications have need of Quality of Service (QoS) parameters such as: minimum hop path, minimum transmitted energy path, residual energy, bandwidth, throughput and power to be adequate so that a reliable and trustful connection between participating nodes is maintained. The proposed work on the performance analysis of low bandwidth and power constraints of nodes, being used in the mobile ad hoc network and design its basic structure and evaluates the outcome of same; on a designed simulator in MATLAB-7.0 and studies its performance on various inputs, like as number of nodes, transmission range, transmission radius of each node throughput and number of iterations. Simulation results show that the number of hop-counts decreases as we increase the percentage of low down bandwidth nodes in the network, it was also concluded that the throughput rate decreases as we increases the number of low down bandwidth nodes in the network.