Troubleshooting Tip: Fixing the error "error_reason":"unable to find 'xxx' in table 'switch.vlan."

Description

This article describes the reason for the following error when a managed FortiSwitch shows a sync error:

"error_reason":"unable to find 'xxx' in table 'switch.vlan."

Scope

FortiGate and managed FortiSwitch version 6.x and above.

Solution

Sometimes, it is possible to encounter an issue where the configuration from FortiGate is not pushed to the managed FortiSwitches.

There are multiple possible reasons for this issue.

This article will explain why this particular error appears:

"error_reason":"unable to find 'xxx' in table 'switch.vlan."

When the following command is executed, the switch shows the 'E' flag.

execute switch-controller get-conn-status

Moreover, when the following command is executed, the following error will appear:

execute switch-controller get-sync-status switch-id <switch-id>

"error_reason":"unable to find 'xxx' in table 'switch.vlan."

This error appears when IGMP snooping is enabled on a higher number of VLANs than the switch supports.

Refer to the section of IGMP snooping where it states, 'On FSR-108F and the FS-1xxE/F/G series, IGMP snooping can be enabled on a maximum of 5 VLANs'. 

Related article:

Technical Tip: Managed FortiSwitch shows 'E=config sync error' flag