You have configured a router with an OSPF router ID, but its IP address still reflects the physical interface. Which action can you take to correct the problem in the least disruptive way?
A. Reload the OSPF process
B. Reboot the router
C. Specify a loopback address
D. Save the router configuration
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A is the correct answer. here is the proof. R1(config-router)#router-id 1.1.1.1
Reload or use “clear ip ospf process” command, for this to take effect
R1(config-router)#
A is the correct answer
Correct answer is B
The answer is A. Specifying router ID is already with higher importance than any loopback address. You need to reload the OSPF or reboot the router. Rebooting the router will stop all other communications. Thus reloading only the OSPF process is the least disruptive way.