GP) 11.8.1Routed protocols and routing protocolsYou have learned that protocols are like languages. One protocol that you have been learning about is IP, or the Internet Protocol. You know that IP is a network layer protocol. Because IP is routed over an internetwork, it is called a routed protocol. Examples of other types of routed protocols include Novell's IPX, and Appletalk. - Routers use routing protocols to exchange routing tables and share routing information. In other words, routing protocols determine how routed protocols are routed. Examples of routing protocols include the following: RIP - Routing Information Protocol IGRP - Interior Gateway Routing Protocol EIGRP - Enhanced Interior Gateway Routing Protocol OSPF Two types of routing protocols are the Exterior Gateway Protocols (EGPs) and the Interior Gateway Protocols (IGPs). Exterior Gateway Protocols route data between autonomous systems. An example of an EGP is BGP (Border Gateway Protocol), the primary exterior routing protocol of the Internet. Can you think of an example where an Exterior Gateway Protocol would be used? Interior Gateway Protocols route data in an autonomous system. Examples of IGPs are: RIP IGRP EIGRP OSPF Can you think of an example where an Interior Gateway Protocol would be used? The most common method to transfer routing information between routers that are located on the same network is RIP. This Interior Gateway Protocol calculates distances to a destination. RIP allows routers that use this protocol to update their routing tables at programmable intervals, typically every thirty seconds. However, because it is constantly connecting neighboring routers, this can cause network traffic to build. RIP allows routers to determine which path it will use to send data, based on a concept known as distance-vector. Whenever data travels on a router, and thus through a new network number, it is considered to have traveled one hop. A path that has a hop ...
