Routing Protocols in MANET

Hybrid routing protocols combine the benefits of both reactive and proactive methods, optimizing for efficiency and overhead reduction.

QoS is important because it ensures that routing protocols can manage delay and throughput, making them suitable for real-time applications.

A key consideration is whether the node needs to send packets to a particular destination, which determines the necessity of route information.

<p>The two broad categories are Proactive Routing Protocols and Reactive Routing Protocols.</p> Signup and view all the answers

<p>Proactive protocols maintain effectiveness by continuously exchanging topological information among network nodes.</p> Signup and view all the answers

<p>Reactive protocols aim to reduce protocol overhead by reacting to routing requests as they occur, rather than maintaining continuous route information.</p> Signup and view all the answers

<p>A fixed mechanism may not address the varying needs of different applications and network situations, necessitating a flexible approach.</p> Signup and view all the answers

<p>The debate focuses on whether nodes should track routes to all destinations or only to those of immediate interest.</p> Signup and view all the answers

<p>The cluster member table stores the destination cluster head for each mobile node in the network.</p> Signup and view all the answers

<p>Nodes update their cluster member tables upon receiving such a table from a neighbor.</p> Signup and view all the answers

<p>GSR avoids flooding of routing messages, optimizing routing decisions locally.</p> Signup and view all the answers

<p>The four tables are: a neighbor list, a topology table, a next hop table, and a distance table.</p> Signup and view all the answers

<p>The topology table contains link state information and a timestamp for when the information was generated by the destination.</p> Signup and view all the answers

<p>The next hop table contains the identity of the next hop node to which packets are forwarded to reach a destination.</p> Signup and view all the answers

<p>GSR maintains global knowledge by exchanging vectors of link states among neighboring nodes.</p> Signup and view all the answers

<p>The operational structure of GSR is similar to DSDV in that both involve routing information exchange among nodes.</p> Signup and view all the answers

<p>Proactive routing protocols provide lower latency by maintaining routes to all nodes continuously.</p> Signup and view all the answers

<p>They generate excessive periodic routing overhead regardless of network mobility or load.</p> Signup and view all the answers

<p>A reactive protocol is preferable in scenarios with heavy network congestion.</p> Signup and view all the answers

<p>AODV (Ad hoc On-Demand Distance Vector) is suitable for smaller networks.</p> Signup and view all the answers

<p>In high mobility scenarios, reactive protocols generally perform better than proactive ones.</p> Signup and view all the answers

<p>Hybrid routing protocols combine the strengths of proactive and reactive protocols.</p> Signup and view all the answers

<p>The mobility and traffic pattern of the network play a crucial role in selecting the routing strategy.</p> Signup and view all the answers

<p>High mobility can degrade the performance of proactive routing protocols due to frequent topology changes.</p> Signup and view all the answers

<p>OLSR reduces the size of control packets by declaring only a subset of links with the node's multipoint relay selectors instead of all links in the network.</p> Signup and view all the answers

<p>MPR nodes are selected to minimize broadcast traffic and ensure efficient dissemination of routing information in the network.</p> Signup and view all the answers

<p>Hop-by-hop routing means that each node in the network uses the most recent information to route a packet towards its destination, adapting to changes in node positions.</p> Signup and view all the answers

<p>OLSR minimizes flooding of control traffic by using only multipoint relays to disseminate information, reducing the number of retransmissions.</p> Signup and view all the answers

<p>OLSR ensures packet delivery by using up-to-date routing information, allowing packets to be routed based on the nodes' most recent positions.</p> Signup and view all the answers

<p>Flooding refers to the process of a node sending broadcast messages to all nodes in the network to disseminate routing information.</p> Signup and view all the answers

<p>OLSR reduces control message overhead by only allowing selected MPR nodes to retransmit broadcast messages, thereby limiting unnecessary data exchange.</p> Signup and view all the answers

<p>MPR nodes are selected from the one-hop neighborhood using bidirectional links to optimize broadcast traffic.</p> Signup and view all the answers

<p>Nodes maintain their link state table based on up-to-date information received from neighboring nodes and periodically exchange this information.</p> Signup and view all the answers

<p>FSR uses a 'fisheye' view that prioritizes frequent updates for nearer nodes over farther nodes, reducing traffic.</p> Signup and view all the answers

<p>A link state with a larger sequence number replaces one with a smaller sequence number, ensuring the most current information is used.</p> Signup and view all the answers

<p>Each participating node views the network as a fisheye, focusing more on nearby nodes.</p> Signup and view all the answers

<p>The 'scope of fisheye' refers to the set of nodes that can be reached within a certain number of hops from a center node.</p> Signup and view all the answers

<p>FSR updates contain information about nearer nodes more frequently, while less frequent updates are sent for farther nodes.</p> Signup and view all the answers

<p>The center node possesses the most accurate information about all nodes within the white circle defined by its scope.</p> Signup and view all the answers

<p>Link state information with smaller sequence numbers is replaced by newer information containing larger sequence numbers.</p> Signup and view all the answers