This article describes how to troubleshoot issues where the MAC cache appears blank and the synchronization status remains stuck in a pending state.
Scope
FortiSwitch.
Solution
Observing the following symptoms:
The output of the 'diagnose switch-controller mac-cache' command shows no clients.
The 'exec switch-controller get-sync-status all' command displays a PENDING sync status.
Example output:
diagnose switch-controller mac-cache show Vdom: root
managed-switch: S124xxxxx95 vfid: 0 running-clients: VLANID PORTID MAC LAST SEEN(secs ago) INTF-NAME No client found
managed-switch: S124xxxxxx15 vfid: 0 running-clients: VLANID PORTID MAC LAST SEEN(secs ago) INTF-NAME No client found
managed-switch: S448xxxxxx62 vfid: 0 running-clients: VLANID PORTID MAC LAST SEEN(secs ago) INTF-NAME No client found
Cause:
This issue can occur if the HTTPS protocol is disabled on the switch interface.
Resolution:
Ensure that HTTPS is enabled on the internal interface of the switch. FortiGate uses HTTPS to push and synchronize configurations with FortiSwitch. By default, HTTPS is enabled on all switches.
If it has been disabled, re-enable it to restore proper functionality.
