The next few pages look at how to verify a few of the new OSPF features introduced in this chapter. For a more thorough verification of OSPF, use all the commands suggested in the review figure (Figure 8-1) at the beginning of this chapter. This section looks at the following new topics:
Verifying the ABR interfaces are in the correct (multiple) areas
Finding which router is DR and BDR on multiaccess links
Confirming the correct number of different types of LSAs exist in each area
Displaying IPv4 routes ...