Configuring the ip ospf Interface Subcommand
The newer style of configuration works just like the old, except in how the configuration enables OSPF directly on the interface. The traditional OSPFv2 configuration enables OSPFv2 on an interface, but indirectly, using the network command in OSPF configuration mode. IOS interpreted the parameters of the network command to decide on which interfaces to enable OSPF. With the new configuration, you simply add the ip ospf process-id area area-id interface subcommand to an interface to enable OSPFv2 on that interface.
Before looking at an example, refer to Chapter 8, Figures 8-16 and 8-17, along with Example 8-1 that follows them. Figure B-16 repeats Figure 8-17 for reference. Simply refamiliarize yourself ...
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