Routing Information Protocol(also named RIP) is one of the routing protocols and known for the best dynamic protocol. The best path from the source network to the destination network can find out by using the hope count. where this term hop count can be defined as: it is the total number of routers that are presented in between the source network and the destination network while they transfer the data packets. The best path will be the path that has less value of hop count. And this path is inserted into the routing table for routing purposes. To know more about Routing Information Protocol (RIP), keep reading this article till the end,

It is also known for distance vector routing protocol and its AD value is 120. This protocol works on the last layer of the OSI model which is the application layer. The port number used for this protocol is 520.

Another feature of the Routing Information Protocol is that it avoids the looping while routing. This is acquired by the use of hop count, that is, we only use the path which has the minimum hop count.

The maximum value that hop count can reach is 15. If the hop count is greater than this value, then that particular network is considered as that is unreachable.

Features of RIP:

⦁    Uses the hop count for finding the best path in the network.

⦁    Avoids looping.

⦁    Network updates are exchanges periodically.

⦁    It is a Distance Vector protocol.

⦁    The AD value is 120.

⦁    Max. hop count value: 15.

⦁    port number use is:520.

⦁    Broadcast updates.

⦁    In updates, a complete routing table is sent.

There is another feature called, Routing on rumours: the router will always trust the information that they receive.

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Versions of RIP:

Mainly there are 3 versions that exist in this type of protocol. They include,

  1. RIP Version1
  2. RIP Version2
  3. RIPng

RIP Version1(RIP v1)


  • Updates are sent as broadcast.
  • Update messages are not authenticating here.
  • This routing protocol is classful. (Because, In its updation in routing, it does not send subnets’s mask information).
  • Broadcast at:

RIP Version2(RIP v2)


  • Updates are sent as multicast.
  • Update messages are authenticated here.
  • This routing protocol is classless. (Because, In its updation in routing, it sends subnet’s mask information.)
  • Broadcast at:



  • Updates are sent as multicast.
  • This routing protocol is classless.(Because, In its foundation in routing, it sends subnets’s mask information.)
  • Broadcast at: FF02::9.
  • It can only run in a network of IP version 6.

To avoid transferring Incorrect routing information, there are multiple ways in RIP. They include the following:

  • Holddown mechanisms.
  • Split horizon mechanism.
  • Route positioning mechanism.

Download Introduction to Routing Information Protocol (RIP) in pdf – Click here