OSPF Problem 4

Try to solve the lab problem in 10 minutes or less.

Verify which router has become DR in VLAN 27 (most likely it is going to be R2).
Force the re-election of the DR making sure that previous BDR becomes DR, and previous DR becomes BDR.
Do NOT shut down any interface to accomplish this.
Do NOT clear ip ospf process to accomplish this.
Do NOT reload the router(s) to accomplish this.

Pic.3

Extra Credit

Take as much time as you need to answer the following questions:

Are DR/BDR roles pre-emptive? Why?

What would be the quickest and causing least interruption way of changing the OSPF role in a broadcast network?

In Case of the same OSPF port priority, what parameter is going to determine DR/BDR election?

What would happen if neither SW1 nor R2 became DR? Check your answer in practice.

When you have solved the problem check the hint(s) below:

Lab Hint

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