Cisco CCNA 2 Instructor Manual page 74

6.3.4 IGP versus EGP
Interior routing protocols are designed to be used in a network that is under the control of a
single organization. The protocols used in CCNA 2 will be IGPs. The protocols RIP, IGRP,
EIGRP, and OSPF are all IGPs. Exterior routing protocols are designed for use between two
different autonomous systems. An example of an EGP protocol is Border Gateway Protocol
(BGP). BGP is the routing protocol used on the Internet. Interior routing protocols are designed
to be used within an autonomous system. BGP is the routing protocol used on the Internet.
Interior routing protocols are designed to be used within an AS.
Copyright © 2004, Cisco Systems, Inc.
73 - 238 CCNA 2: Routers and Routing Basics v3.1 Instructor Guide – Module 6