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kaurg_FTNT
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‎06-18-2025
Last activity: Jun 18, 2025 11:38:24 PM
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Troubleshooting Tip: FortiGate in an HA configuration goes out of synchronization due to a split-port interface on FortiSwitch

09-05-2024
Description The article discusses the issue of out-sync HA after upgrading to v7.2.6 and v7.4.4. Scope FortiGate v7.2, v7.4. Solution After upgrading to FortiOS v7.2.6 or v7.4.4, synchronization issue occurs in High Availability (HA) setups. The prob...

Troubleshooting Tip: FortiGate fails to resolve FQDN after upgrade to 7.6.0

08-23-2024
Description The article describes how to resolve a known issue with FortiOS 7.6.0 where domain resolution fails. Scope FortiOS 7.6.0 Solution After upgrading to 7.6.0, FortiGate fails to resolve the FQDN. The use of secondary dns-database zones can c...

Technical Tip: OSPFv3 error 'OSPFv3: RECV[Hello]: instance ID mismatch'

02-07-2024
Description This article explains the reason for the error 'OSPFv3: RECV[Hello]: instance ID mismatch' observed on FortiGate. Scope FortiGate. Solution OSPFv3 was developed to support IPv6. Instance ID is an 8-bit field in the OSPFv3 header. Instance...

Technical Tip: Unable to change managed FortiSwitch name after upgrading to v7.4.x+

10-19-2023
Description This article describes an issue where, after upgrading the FortiGate from 7.0, 7.2 to 7.4, users are unable to change the managed FortiSwitch name from the GUI. Scope FortiGate v7.4.x., FortiSwitch Solution In version 7.2 and prior versio...

Troubleshooting Tip: Troubleshooting issues with multicast routing when using PIM in Sparse-Mode

09-05-2023
Description This article describes how to troubleshoot issues with multicast when the firewall is set to operate as a PIM router in Spare-Mode. The article discusses commands and debugs to assist troubleshooting issues with PIM neighborship, multicas...
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