Difference between OSPF and IGRP

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OSPF stands for Open Shortest Path First, which uses a link-state routing algorithm. With the help of link-state information, which is accessible in the controller, it builds the topology. Topology discovers the routing table for overpowering decisions. Bothe the addressing models, variable-length subnet masking, and classless inter-domain routing are held up by OSPF.

As it uses Dijkstra’s algorithm, it enumerates the shortest path tree for every route. The main benefit of the Open Shortest Path First is that it controls the error recognition by itself. Moreover, it uses disseminate addressing for routing in a live-stream realm.


IGRP stands for Interior Gateway Routing Protocol which uses distance vector protocol to swap the data within a system. It keeps up with numerous metrics for every node, which involves delay, load, and bandwidth. Every 90 seconds, it updates the routing information by default. The communication port number for IGRP, which is nine, is used.

Difference between OSPF and IGRP

The following table highlights the major differences between OSPF and IGRP −

OSPF means Open Shortest Path First.IGRP means Interior Gateway Routing protocol.
It works on the Dijkstra algorithm.It works on the Bellman-Ford algorithm.
OSPF is a link-state code.IGRP is a distance-vector code.
Fundamentally it is used for more giant size corporations in the network.Primarily it is used as a medium for more giant size corporations in the network.
There is no limitation on the hop count.Limited hop count that is only 255 is allowed.
It is a more knowledgeable routing protocol than the IGRP.It is not a knowledgeable protocol.
It creates three tables in the router: the Neighbour table, the Database table, and the Routing table.It also creates the same three tables in the router.
Its managerial distance is 110.Its managerial distance is 100.
It is a production-grade routing protocol.It is a Cisco-grade routing protocol.
This protocol measures the metric in terms of bandwidth.This protocol measures the metric in terms of bandwidth, load, and delay.
Updated on 19-Aug-2021 12:04:06