Interior Routing Protocols

Conventionally the routing problem is broken into several pieces.

Interior routing protocols. An interior protocol is a routing protocol used inside interior to an independent network system. Interior gateway routing protocol igrp is a proprietary distance vector routing protocol used to communicate routing information within a host network. Interior gateway protocols type 1 link state routing protocols such as ospf and is is.

Interior gateway protocols igps handle routing within an autonomous system one routing domain. Interior gateway protocols type 2 distance vector routing protocols such as routing information protocol ripv2 igrp. Although there are many types of routing protocols three major classes are in widespread use on ip networks.

They are intended for use within a single set of networks either under a single management or closely coordinated managements. Such sets of networks are connected by external gateway protocols egps. In tcp ip terminology these independent network systems are called autonomous systems.

Interior gateway routing protocol is a distance vector routing protocol developed by cisco systems for routing multiple protocols across small and medium sized cisco networks. Protocols such as igrp are called internal gateway protocols igps. Bgp border gateway protocol is an example of an exterior routing protocol egp which is used to exchange routing information between autonomous systems on the internet.

Rip is capable of routing messages across networks up to a maximum of 15 hops. An interior gateway protocol igp is a type of protocol used for exchanging routing information between gateways commonly routers within an autonomous system for example a system of corporate local area networks. All of the routing protocols mentioned above are interior routing protocols igp which means that they are used to exchange routing information within one autonomous system.

In plain english igp s figure out how to get from place to place between the routers you own. This contrasts with ip rip and ipx rip which are designed for multi vendor networks. It is proprietary which requires that you use cisco routers.