Routing Protocol

Routing Protocol Facts

Routing Protocol Facts Each organization that has been assigned a network address from an ISP is considered an autonomous system (AS). That organization is free to create one large network, or divide the network into subnets. Each autonomous system is identified by an AS number. This number can be locally administered, or registered if the AS is connected to the Internet. Routers are used within an AS to segment (subnet) the network. In addition, they are used to connect multiple ASs together. Routers use a routing protocol to dynamically discover routes, build routing tables, and make decisions about how to send packets through the internetwork. Routing protocols can be classified based on whether they are routing traffic within or between autonomous systems. z z z

Interior Gateway Protocol (IGP)--protocol that routes traffic within the AS Exterior Gateway Protocol (EGP)--protocol that routes traffic outside of or between ASs Border Gateway Protocol (BGP)--enhancement of EGP that routes traffic between ASs

In this course, you will learn about the following Interior Gateway Protocols: z z z z

Routing Information Protocol (RIP) Interior Gateway Routing Protocol (IGRP) Open Shortest Path First (OSPF) Enhanced Interior Gateway Routing Protocol (EIGRP)