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JN0-351 · Question #48

You have two OSPF routers forming an adjacency. R1 has a priority of 32 and a router ID of 192.168.1.2. R2 has a priority of 64 and a router ID of 192.168.1.1. The routers were started at the same…

The correct answer is D. R1 will be the BDR. The router with the highest OSPF priority becomes the DR. In this case, R2 has a higher priority (64) compared to R1's priority (32). Hence, R2 will become the DR. The router with the next highest priority becomes the BDR. Since R1 has the next highest priority after R2, R1…

OSPF

Question

You have two OSPF routers forming an adjacency. R1 has a priority of 32 and a router ID of 192.168.1.2. R2 has a priority of 64 and a router ID of 192.168.1.1. The routers were started at the same time and all other OSPF settings are the default settings. Which statement is correct in this scenario?

Options

  • AAt least three routers are required for a DR/BDR election
  • BRouter IDs must match for an adjacency to form.
  • CR2 will be the BDR.
  • DR1 will be the BDR.

How the community answered

(38 responses)
  • A
    3% (1)
  • B
    16% (6)
  • C
    5% (2)
  • D
    76% (29)

Explanation

The router with the highest OSPF priority becomes the DR. In this case, R2 has a higher priority (64) compared to R1's priority (32). Hence, R2 will become the DR. The router with the next highest priority becomes the BDR. Since R1 has the next highest priority after R2, R1 will become the BDR.

Topics

#OSPF priority#DR/BDR election#router ID tiebreak#BDR selection

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