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.
| Nonbroadcast | Point-to-Multipoint (Broadcast) | Point-to-Multipoint Nonbroadcast | Broadcast | Point-to-Point | |
|---|---|---|---|---|---|
| DR/BDR | Yes | No | No | Yes | No |
| Identify Neighbor? | Yes | No | Yes | No | No |
| Timer Intervals (Hello/Dead) | 30/120 | 30/120 | 30/120 | 10/40 | 10/40 |
| RFC 2328 or Cisco | RFC | RFC | Cisco | Cisco | Cisco |
| Network Supported | Full mesh | Any | Any | Full mesh | Point-to-point |
To configure OSPF in a nonbroadcast environment, apply the ip ospf network command on the interface, as follows:
Code View:
Router(config-if)# ip ospf network {broadcast | non-broadcast | {point-to-multipoint [non-broadcast]}}
