IGP (Interior Gateway Protocol)

An Interior Gateway Protocol (IGP) is a type of communication method used by routers within a single organization or network to exchange information about the best paths for sending data. Think of it like a set of rules that helps routers learn the layout of the network and decide the fastest routes to deliver information. Common examples of IGPs include Routing Information Protocol (RIP) and Open Shortest Path First (OSPF). By efficiently sharing this routing information, IGPs ensure that data travels swiftly and reliably within the internal network.