Distance Vector Routing Protocol

Posted By on October 22, 2014


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The problem of hidden terminal and exposed terminal in wireless networks
Comparison of Datagram and Virtual Circuit Subnet

Distance Vector


Routers use distance vector–based routing protocols to periodically advertise the routes in their routing tables. Routing information exchanged between typical distance vector–based routers is unsynchronized and unacknowledged. Table 1.1 lists some distance vector–based routing protocols.

Table   1.1 Distance VectorBased Routing Protocols

Routable Protocol Distance Vector–Based Routing Protocols
IP Routing Information Protocol (RIP) Interior Gateway Routing Protocol (IGRP)
IPX Routing Information Protocol (RIP)
AppleTalk Routing Table Maintenance Protocol (RTMP)

Advantages of Distance Vector–Based Routing Protocols

  • Simpler.
    Distance vector–based routing protocols are simple router advertisement processes that are easy to understand.
  • Easy to configure.
    In its simplest incarnation, configuring a distance vector–based routing protocol is as easy as enabling it on the router interfaces.

Disadvantages of Distance Vector–Based Routing Protocols

  • Large routing tables.
    Multiple routes to a given network ID can be reflected as multiple entries in the routing table. In a large internetwork with multiple paths, the routing table can have hundreds or thousands of entries.
  • High network traffic overhead.
    Route advertising is done periodically even after the internetwork has converged.
  • Does not scale.
    Between the size of the routing table and the high overhead, distance vector–based routing protocols do not scale well to large and very large internetworks.
  • High convergence time.
    Due to the unsynchronized and unacknowledged way that distance vector information is exchanged, convergence of the internetwork can take several minutes. While converging, routing loops and black holes can occur.
The problem of hidden terminal and exposed terminal in wireless networks
Comparison of Datagram and Virtual Circuit Subnet

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Posted by Akash Kurup

Founder and C.E.O, World4Engineers Educationist and Entrepreneur by passion. Orator and blogger by hobby

Website: http://world4engineers.com