Troubleshooting Tip: LACP interface flaps not dete...

yzayani · 11-13-2025

Description This article describes the troubleshooting steps and solutions for HTTP resets and timeouts observed during performance testing on Juniper NFX350 platforms VM08/VM16 running FortiGate VM with DPDK enabled. These issues are often caused by...

yzayani · 11-05-2025

Description This article describes a behavior observed on certain FortiGate models where NetBIOS broadcast packets (UDP port 137/138) are still forwarded even though the interface setting 'set netbios-forward disable' is applied. Scope FortiGate vers...

yzayani · 10-28-2025

Description This article describes an issue where LACP interfaces intermittently flap on Cisco Nexus switches, but the flaps are not detected or logged by the FortiGate. Scope FortiGate. Solution The issue occurs in environments using LAG interfaces ...

yzayani · 10-24-2025

Description This article describes an issue in FortiOS v7.4 where FortiGate shows high CPU usage because the iked process gets stuck. This happens during IKEv1 VPN rekey (Phase 1 or Phase 2). The CPU stays high for hours and then goes back to normal....

yzayani · 09-22-2025

Description This article describes an issue in FortiOS v7.4.x where BGP route selection fails when a route-map is applied during redistribution. The problem occurs due to incorrect AD handling, causing route flapping and loss of connectivity between ...

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Troubleshooting Tip: HTTP Resets and Timeouts During Performance Testing with DPDK Enabled on FortiGate VM in Juniper NFX350 Platform

Troubleshooting Tip: FortiGate forwards NetBIOS broadcast packets even when NetBIOS forwarding is disabled