Mobile Ad-hoc Networks (MANETs) are a cluster of self-organizing and self-governing wireless nodes without any backbone infrastructure and centralized administration. The various nodes in MANET move randomly, and this node mobility may pose challenges on the performance of routing protocols. In this paper, an Intra and intergroup performance review of various MANET routing protocols are performed under varying speed of nodes. The routing protocols included in this study are reactive, proactive, and hybrid protocols. This performance review is done using the NS2 simulator and random waypoint model. The routing protocols performance is assessed through standard performance measure metrics including packet delivery ratio, throughput, routing overhead and end to end delivery with varying speed of nodes. The simulations result shows that there is no significant impact of varying speed of nodes on standard performance evaluation metrics. . It is self-organizing and self-configuring and can be deployed without any wired base stations or infrastructure support. The mobile nodes act as hosts and also as routers to send the data across the networks.
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HybridA MANET is a collection of free mobile nodes such as laptops, smartphones, tablet PC, etc. It has many characteristics. In MANETs, there is no central server and nodes themselves are responsible for communicating with other nodes to carry out network operations such as on-demand routing [3]. Nodes are free to move anywhere whenever and wherever they want, and they are also free to change their speeds [4]. Therefore, the network topology changes randomly and at uncertain times. Nodes can send messages to other nodes which are not in range or nor directly connected with the help of intermediate nodes [5].MANET has many advantages. It is scalable as it supports the addition of more mobile nodes in the network. The information can be accessed irrespective of the geographic position of nodes [5]. The use of mobile nodes results in many connection failures. The routing protocols are designed to handle these situations [6]. MANETs are fault tolerant. The main advantage is that the nodes do not need wireless routers to connect to the internet [7].Therefore, it reduces the cost of deploying a router and affordable than a