See the solution below in Explanation:
Solution:
R1
en
Conf t
Router ospf 10
Router-id 10.x.x.x – lo0 address
Int range lo0, e0/0-1
Ip ospf 10 area 0
Exit
wr
R2
Area 10 range 10.1.0.0 255.255.0.0
exit
R3
Area 10 range 10.2.0.0 255.255.0.0
Wr
OR
Solution: -
Copy run start
Verification:-
VERIFICATION: -