On a phone or tablet, tap a chip to pick it up, then tap a drop zone (or another chip to swap).

Drag and drop the snippets from the right into the troubleshooting notes to identify why the OSPF neighbors do not fully form and which interface command resolves it. Not all options are used.

Fill all four blanks, then click Check Answer.

R1#show ip ospf neighbor
Neighbor 10.10.10.2 state: 

R1#debug ip ospf adj
OSPF: Nbr 10.10.10.2 has smaller interface 

Cause identified: 

Temporary interface fix:
interface GigabitEthernet0/0