Category Archives: OSPF

19 June, 2026

OSPF Primer: Message Types, Areas, and FortiGate Troubleshooting

Master OSPF FortiGate troubleshooting by understanding message types, area design, and adjacency states. Fix MTU mismatches and VPN routing issues with this practical guide.

5 October, 2021

Quick Tip – When your FortiGate is stuck in ExStart when using OSPF

Resolve FortiGate OSPF stuck in ExStart state. Use the mtu-ignore command to fix adjacency issues over VPNs and restore full OSPF neighbor status.

20 May, 2019

Route-Map on Fortigate

Configure a Fortigate OSPF route-map to control route advertisements. Learn to create access-lists and apply them to redistribute connected networks.