It basically combines the advantages of both, reactive and pro-active routing protocols. It also operates in two phases in the similar fashion: Route discovery and Route maintenance. The main difference lies in the way of storing the path, AODV stores the path in the routing table whereas DSR stores it in the data packet’s header itself.
![manet pc pes 06 prgrame manet pc pes 06 prgrame](https://i.imgur.com/5LOmEYY.png)
Hence, Ad-Hoc On Demand Vector Routing protocol came as solution to it. Hence, as the network size increases, the length of the complete path also increases and the data packet’s header size also increases which makes the whole network slow. In DSR, after route discovery, when the source mobile node sends the data packet to the destination mobile node, it also contains the complete path in its header. It is an extension of dynamic source routing protocol (DSR) and it helps to remove the disadvantage of dynamic source routing protocol. It is a reactive/on-demand routing protocol. Ad-Hoc On Demand Vector Routing protocol (AODV):.This phase performs the maintenance work of the route as the topology in the mobile ad-hoc network is dynamic in nature and hence, there are many cases of link breakage resulting in the network failure between the mobile nodes. This phase determines the most optimal path for the transmission of data packets between the source and the destination mobile nodes. The process of route discovery occurs by flooding the route request packets throughout the mobile network.
![manet pc pes 06 prgrame manet pc pes 06 prgrame](https://mldefault.files.wordpress.com/2011/05/eac_2007_4-4-23.png)
In this type of routing, the route is discovered only when it is required/needed. It consists of two major phases namely, route discovery and route maintenance. These are also known as on-demand routing protocol. In GSR, each of the mobile node maintains one list and three tables namely, adjacency list, topology table, next hop table and distance table. Global state routing doesn’t flood the link state routing packets globally into the network. Hence, as a solution Global State Routing Routing Protocol (GSR) came into the picture. Global flooding which may lead to the congestion of control packets in the network. Link state routing protocol was not suited for mobile ad-hoc networks because in it, each node floods the link state routing information directly into the whole network i.e. It is based on the Dijkstra’s routing algorithm. It actually extends the link state routing of the wired networks. It is a pro-active/table driven routing protocol.
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A node will include the new update in the table only if the entry consists of the new updated route to the destination with higher sequence number. Hence, as a solution Destination Sequenced Distance Vector Routing Protocol (DSDV) came into picture.ĭestination sequence number is added with every routing entry in the routing table maintained by each node. Distance vector routing protocol was not suited for mobile ad-hoc networks due to count-to-infinity problem. It is based on the Bellman-ford routing algorithm. It actually extends the distance vector routing protocol of the wired networks as the name suggests.
![manet pc pes 06 prgrame manet pc pes 06 prgrame](https://i1.rgstatic.net/publication/319127414_Performance_Evaluation_of_Congestion_Control_in_MANETs_using_AODV_DSR_and_ZRP_Protocols/links/5ee2e076a6fdcc73be738ccb/largepreview.png)
![manet pc pes 06 prgrame manet pc pes 06 prgrame](http://sens-public.org/static/git-articles/SP1492/media/arton1492.jpg)
Types of area networks – LAN, MAN and WAN.Differences between Virtual Circuits and Datagram Networks.Introduction to basic Networking terminology.Difference between Unicast, Broadcast and Multicast in Computer Network.Computer Networks | IP Addressing | Question 5.Computer Networks | IP Addressing | Question 8.Computer Networks | IP Addressing | Question 2.Computer Networks | Network Layer | Question 1.Computer Networks | Network Layer | Question 2.Introduction of Mobile Ad hoc Network (MANET).Wormhole Attack in Wireless Sensor Networks.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.