Refer to the exhibit.
R1# show ip ospf interface gig 2
GigabitEthernet2 is up, line protocol is up
Internet Address 172.20.1.12/31, Area 0.0.1.255, Attached via Interface enable
Process ID 1, Router ID 10.255.255.1, Network Type Point_to_point, cost:1
Topology-MTID : 0
Cost : 1
Dsiabled : No
Shutdown : No
Topology Name : Base
Enabled by interface config, including secondary ip addresses Transmit delay is 1 sec, state point_to_point
Timer intervals configured, Hello 10, Dead 40, wait 40, Retransmit 5
R1# show ip interface gig 2 GigabitEthernet2 is up, line protocol is up Internet Address 172.20.1.12/31 MTU is 9216 bytes
R2# show ip ospf interface gig 2
GigabitEthernet2 is up, line protocol is up
Internet Address 172.20.1.13/31, Area 511, Attached via Interface enable
Process ID 1, Router ID 10.255.255.2, Network Type Point_to_multipoint, cost:1
Topology-MTID : 0
Cost : 1
Dsiabled : No
Shutdown : No
Topology Name : Base
Enabled by interface config, including secondary ip addresses Transmit delay is 1 sec, state point_to_multipoint
Timer intervals configured, Hello 10, Dead 40, wait 40, Retransmit 5
R2# show ip interface gig 2 GigabitEthernet2 is up, line protocol is up Internet Address 172.20.1.13/31 MTU is 1500 bytes
While troubleshooting the OSPF adjacency between routers R1 and R2 an engineer noticed that both routers are stuck in the EXCHANGE/EXSTART state.
What should the engineer fix to solve the ongoing issue?