| Description |
This article describes how to troubleshoot an issue where the OSPF neighbor is stuck in a loading state. |
| Scope | FortiGate. |
| Solution |
See one of the following articles if the network is stuck in one of the other states: - Troubleshooting Tip: OSPF Neighbor stuck in INIT state. - Technical Tip: Why multiple OSPF neighbors on FortiGate are stuck in 2-Way state?. - Troubleshooting Tip: OSPF Neighbour stuck in EXSTART/EXCHANGE state.
Always note the size of the OSPF packets during cases where the neighbour state gets stuck at 'loading'. For example: note large LSU packets containing large router LSA.
In these cases, take simultaneous packet captures on both OSPF neighbors to find any missing packets.
FortiGate may generate a large Type-1 LSA (total packet length) that may have difficulty reaching the destination.
Refer to the screenshot below for an example OSPF capture:
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