OSPF Neighbor Relationship Troubleshooting Guide: Checking Connectivity and Firewall Configuration

According to the provided OSPF neighbor table for R1 and R3, the OSPF neighbor relationship between them is successfully established and the state is 'FULL/DR'. This indicates that the OSPF neighbor relationship between R1 and R3 is functioning as expected.

Since the neighbor relationship is successfully established and the configurations on both R1 and R3 appear to be correct, we need to investigate other potential factors.

Try performing connectivity tests between the interfaces on R1 and R3. Use the command 'ping 192.168.2.2' on R1 and 'ping 192.168.1.1' on R3 to check if bi-directional communication is possible.

If the ping tests still fail, please provide the firewall configurations (if applicable) for both R1 and R3, along with their log information to assist further troubleshooting.