Cisco CCENT/CCNA ICND1 100-101 Official Cert Guide

Chapter 17. Learning IPv4 Routes with OSPFv2

The Open Shortest Path First (OSPF) routing protocol can be used by each router such that all routers learn routes to all subnets in an enterprise IPv4 network. In fact, with a relatively simple OSPF design, the routers could all use the same exact OSPF configuration, with two commands: router ospf 1 and network 0.0.0.0 255.255.255.255 area 0. If your only goal was to get OSPF working right now, ignoring any desire to understand it, you could just skip the chapter, configure all the routers, and be finished. (Tempting, isn’t it?)

Of course, both for real networking jobs and for the CCENT and CCNA exams, it helps to both understand the concepts and to know the configuration options. This chapter walks ...