The following scenarios and questions are designed to draw together the content of the chapter and to exercise your understanding of the concepts. There is not necessarily a right answer. The thought process and practice in manipulating the concepts is the goal of this section. The answers to the scenario questions are found at the end of this chapter.

Scenario 5-1

For a given network, all routers share a common multiaccess segment. One router is elected the DR and another is elected the BDR.

1.Which parameter determines the router that will be selected as the DR in an OSPF network?
2.Could a router with a priority value of zero assume the role of a DR or a BDR in the OSPF?
3.How is the OSPF router ID determined on a Cisco router?
4.What is the role of the DR and BDR in the OSPF network?