Short for interior gateway protocol, a generic term for a routing protocol that is used to exchange routing information among routers in an autonomous network, such as a enterprise’s LAN. IGPs typically support confined geographical areas.
Choosing an Interior Gateway Protocol When you enable routing protocols, and their corresponding processes, you unleash a powerful, dynamic force that automates the population of routing tables on your network. But using any major IGP (Interior Gateway Protocol)--RIP/RIP2, OSPF or IGRP/ EIGRP--has trade-offs.
