Troubleshooting Tip: FortiGate unable to ping SVIs while adding a VLAN widget

Description

This article describes a situation where adding a widget for the VLAN interface as Interface Bandwidth on the FortiGate device may have inadvertently caused a configuration or resource conflict, leading to the device's failure to operate correctly and preventing pinging of SVIs.

Scope

FortiGate.

Solution

This could be due to misconfigured interface settings or resource exhaustion in the firmware related to the widget's functionality.

Troubleshooting should include reviewing the VLAN and interface configurations, checking system logs for errors, and possibly updating or reverting the firmware to a stable version to resolve the issue.

To troubleshoot the issue, follow these steps:

Run the command to check the system performance and top processes.

get system performance status
diagnose sys top

Run the commands below to enable the debug logs for the httpsd and CLI applications.

diagnose debug reset
diagnose debug console timestamp enable
diagnose debug application httpsd -1
diagnose debug cli 8
diagnose debug enable

Reproduce the issue and collect the debug logs. Run the commands 'diagnose debug reset' and 'diagnose debug disable' to reset and disable the debug logs.

diagnose debug reset
diagnose debug disable

To fix the issue, disable the resolve-apps feature and run the following commands.

config log gui-display
set resolve-apps disable