10.2 IP Routing Protocols  
  10.2.7 IGP and EGP  
An autonomous system is a network or set of networks under common administrative control, such as the cisco.com domain. An autonomous system consists of routers that present a consistent view of routing to the external world.

Two families of routing protocols are Interior Gateway Protocols (IGPs) and Exterior Gateway Protocols (EGPs).

IGPs route data within an autonomous system.

  • Routing Information Protocol (RIP) and (RIPv2)
  • Interior Gateway Routing Protocol (IGRP)
  • Enhanced Interior Gateway Routing Protocol (EIGRP)
  • Open Shortest Path First (OSPF)
  • Intermediate System-to-Intermediate System protocol (IS-IS)

EGPs route data between autonomous systems. An example of an EGP is Border Gateway Protocol (BGP).

 

Web Links

What IP Routing Protocol Should I Use?

http://www.faqs.org/faqs/ cisco-networking-faq/ section-28.html