Difference between IGRP and EIGRP

Interior Gateway Routing Protocol (IGRP):
Interior Gateway Routing Protocol is the routing protocol. It is also a distance vector routing protocol. In this, Bellman ford algorithm is used. The least hop count in IGRP is 255.

Enhanced Interior Gateway Routing Protocol (EIGRP):
Enhanced Interior Gateway Routing Protocol is routing protocol like Interior Gateway Routing Protocol. It is the link state routing protocol as well as vector routing protocol.

The main difference between the IGRP and EIGRP is that, Interior Gateway Routing Protocol is Classful routing technique, while Enhanced Interior Gateway Routing Protocol is a classless routing technique.



Difference between IGRP and EIGRP:

S.NO IGRP EIGRP
1. IGRP stands for Interior Gateway Routing Protocol. EIGRP stands for Enhanced Interior Gateway Routing Protocol.
2. Interior Gateway Routing Protocol is Classful routing technique. While Enhanced Interior Gateway Routing Protocol is a classless routing technique.
3. IGRP is a slow convergence. While it is a fast convergence.
4. In IGRP, Bellman ford algorithm is used. While in this, Dual algorithm is used.
5. IGRP needs more or high bandwidth. While EIGRP needs low or less bandwidth.
6. The least hop count in IGRP is 255. While the least hop count in EIGRP is 256.
7. It provides 24 bits for delay. While it provides 32 bits for delay.



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