Foundation Summary

The Foundation Summary provides a convenient review of many key concepts in this chapter. If you are already comfortable with the topics in this chapter, this summary might help you recall a few details. If you just read this chapter, this review should help solidify some key facts. If you are doing your final prep before the exam, the following lists and tables are a convenient way to review the day before the exam.

Table 6-3 compares the five OSPF network types in a nonbroadcast environment.

Table 6-3. OSPF Network Types in a Nonbroadcast Environment
 NonbroadcastPoint-to-Multipoint (Broadcast)Point-to-Multipoint NonbroadcastBroadcastPoint-to-Point
Identify Neighbor?YesNoYesNoNo
Timer Intervals (Hello/Dead)30/12030/12030/12010/4010/40
RFC 2328 or CiscoRFCRFCCiscoCiscoCisco
Network SupportedFull meshAnyAnyFull meshPoint-to-point

To configure OSPF in a nonbroadcast environment, apply the ip ospf network command on the interface, as follows:

      Router(config-if)# ip ospf network {broadcast | non-broadcast | {point-to-multipoint