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Routing TCP/IP, Volume I (CCIE Professional Development) by Jeff Doyle

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Configuring OSPF

The many options and configuration variables available to OSPF frequently make it the IGP of choice in large IP internetworks. However, the opinion is occasionally expressed that OSPF configuration is “too complex” to be a good choice for small internets. This is nonsense. As the first case study shows, getting a basic OSPF configuration up and running involves only a few extra keystrokes in the network command; if the operation of OSPF is reasonably well understood, these extra keystrokes will be intuitive.

Case Study: A Basic OSPF Configuration

The three steps necessary to begin a basic OSPF process are:

  1. Determine the area to which each router interface will be attached.

  2. Enable OSPF with the command router ospf process-id ...

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