Difference between Distance vector routing and Link State routing

Prerequisite – Classification of Routing Algorithms

Distance Vector Routing –

• It is a dynamic routing algorithm in which each router computes distance between itself and each possible destination i.e. its immediate neighbors.
• The router share its knowledge about the whole network to its neighbors and accordingly updates table based on its neighbors.
• The sharing of information with the neighbors takes place at regular intervals.
• It makes use of Bellman Ford Algorithm for making routing tables.
• Problems – Count to infinity problem which can be solved by splitting horizon.
  – Good news spread fast and bad news spread slowly.
  – Persistent looping problem i.e. loop will be there forever.

Link State Routing –

• It is a dynamic routing algorithm in which each router shares knowledge of its neighbors with every other router in the network.
• A router sends its information about its neighbors only to all the routers through flooding.
• Information sharing takes place only whenever there is a change.
• It makes use of Dijkastra’s Algorithm for making routing tables.
• Problems – Heavy traffic due to flooding of packets.
  – Flooding can result in infinite looping which can be solved by using Time to leave (TTL) field.

  Comparison between Distance Vector Routing and Link State Routing:

  

  

  
  
  
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  Recommended Posts:

  • Unicast Routing - Link State Routing
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  • Difference between Static and Dynamic Routing
  • Onion Routing
  • Types of Routing
  • Securing Routing Protocols
  • Classification of Routing Algorithms
  • Routing Information Protocol (RIP)
  • Routing Interface Protocol (RIP) V1 & V2
  • Classes of Routing Protocols
  • Fixed and Flooding Routing algorithms
  • Differences between Intradomain and Interdomain Routing
  • Link State Advertisement (LSA)
  • Inter VLAN Routing by Layer 3 Switch

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  Ankit87

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