distance vector routing algorithm program in java

Routers that use distance-vector protocol determine the distance between themselves and a destination. Enhanced Interior Gateway Routing Protocol (EIGRP).Interior Gateway Routing Protocol (IGRP).Routing Information Protocol Next Generation (RIPng), an extension of RIP version 2 with support for IPv6.Routing Information Protocol Version 2 (RIPv2).Some of these protocols have the disadvantage of slow convergence.Įxamples of distance-vector routing protocols: This process continues until the routing tables of each router converge to stable values. In the next advertisement cycle, a router advertises updated information from its routing table. Using these routing advertisements each router populates its routing table. It advertises its distance value (DV) calculated to other routers and receives similar advertisements from other routers unless changes are done in the local network or by neighbours (routers). In these protocols, each router does not possess information about the full network topology. The distance vector algorithm was the original ARPANET routing algorithm and was implemented more widely in local area networks with the Routing Information Protocol (RIP).ĭistance-vector routing protocols use the Bellman–Ford algorithm. The term distance vector refers to the fact that the protocol manipulates vectors ( arrays) of distances to other nodes in the network.

Another way of calculating the best route across a network is based on link cost, and is implemented through link-state routing protocols. Distance-vector routing protocols also require that a router inform its neighbours of network topology changes periodically.ĭistance-vector routing protocols use the Bellman–Ford algorithm to calculate the best route. To determine the best route across a network, routers using a distance-vector protocol exchange information with one another, usually routing tables plus hop counts for destination networks and possibly other traffic information. Some distance-vector protocols also take into account network latency and other factors that influence traffic on a given route. Distance-vector routing protocols measure the distance by the number of routers a packet has to pass one router counts as one hop. ( Learn how and when to remove this template message)Ī distance-vector routing protocol in data networks determines the best route for data packets based on distance. ( November 2013) ( Learn how and when to remove this template message) Please help improve it to make it understandable to non-experts, without removing the technical details. This article may be too technical for most readers to understand.

Distance vector routing algorithm program in java