Difference between IGRP and BGP

1. Interior Gateway Routing protocol (IGRP) :
IGRP, in which uses distance vector protocol (interior) to exchange data within a system. It supports multiple metrics for each node which includes delay, load and bandwidth, in order to compare the 2 routes which are combined into single metrics. The port number for IGRP is 9 which are used for communication and by default every 90 seconds it updates the routing information.

2. Border Gateway Protocol (BGP) :
In BGP, Transmission control protocol is used. It is type of mesh topology or design.It works by two independent networks (Autonomous Systems or AS) exchanging routing information. The two routers agree to exchange information about how to reach certain ip-ranges. BGP uses Transmission control protocol (TCP) port 179.

Difference between IGRP and BGP :

1. IGRP Stands For Interior Gateway Routing protocol. BGP stands for Border Gateway Protocol.
2. It works on Bellman-Ford algorithm. It works on Best path algorithm.
3. It is basically use for lager size organization. It is basically use for very lager size organization as compared to IGRP.

4. It is a Distance Vector type. It is a Vector State type.
5. It is internal gateway protocol. It is external gateway protocol.
6. It is a intelligent routing protocol. It is a more intelligent routing protocol than IGRP.
7. In IGRP, Internet protocol is used. In BGP, Transmission control protocol is used.
8. Its administrative distance is 100. Its administrative distance are 20 (Internal) and 200 (External).

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