Chapter 4: OSPF 
Labs:
4.6.1 In this lab, you configure OSPF on three Cisco routers. First, you configure loopback interfaces to provide stable OSPF Router IDs. Then you configure the OSPF process and enable OSPF on the appropriate interfaces. After OSPF is enabled, you tune the update timers and configure authentication.
4.6.2 In this lab, you observe the OSPF DR and BDR election process using debug commands. Then you assign each OSPF interface a priority value to force the election of a specific router as a DR.
4.6.3 In this lab, configure OSPF as a point-to-multipoint network type so that it operates efficiently over a hub-and-spoke Frame Relay topology.
Interactive Labs:
4.3.1 In this lab exercise you will configure the SanJose1 router for OSPF in a single area. The Westasman router is already configured for OSPF. You will first specify the OSPF process ID and then enter router configuration mode. In router configuration mode, you will configure OSPF for specific networks in area 0.