When the network is relatively stable, incremental updates are sent to avoid extra traffic and full dump are relatively infrequent.
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This article discusses proposed routing protocols for these ad hoc networks.
These routing protocols can be divided into two categories: table-driven and on-demand routing based on when and how the routes are discovered.
A full dump sends the full routing table to the neighbors and could span many packets whereas in an incremental update only those entries from the routing table are sent that has a metric change since the last update and it must fit in a packet.
If there is space in the incremental update packet then those entries may be included whose sequence number has changed.
When the network topology changes the nodes propagate update messages throughout the network in order to maintain a consistent and up-to-date routing information about the whole network.
These routing protocols differ in the method by which the topology change information is distributed across the network and the number of necessary routing-related tables.It also contains the downstream neighbor of z through which this path is realized.The Routing table of node x contains the distance of each destination node y from node x, the predecessor and the successor of node x on this path.A mobile host communicates with a bridge in the network (called base station) within its communication radius.The mobile unit can move geographically while it is communicating. In contrast to infrastructure based networks, in ad hoc networks all nodes are mobile and can be connected dynamically in an arbitrary manner.Each route update packet, in addition to the routing table information, also contains a unique sequence number assigned by the transmitter. The stations delay the transmission of a routing update by settling time so as to eliminate those updates that would occur if a better route were found very soon.