FortiManager serial number change

[kyle-hsuan]

Hi

I have a problem when my FortiManager rebuild and restore configuration, Fortigate device connection is down.

I follow below KB, but it seems not working.

https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-replace-the-serial-number-of-a-Fort...

Kyle_FMG-VM64 # diagnose fgfm session-list
FortiGate-60E(261) sn(FGT60Exxxxxxxxx) ip(10.10.10.67)
state(get auth) tunnel() uptime:unknown
Session count = 1 (tunnel 0, auth 1)

Thanks.

[fricci_FTNT]

Hi @kyle-hsuan ,

You may run the debug as explained in the article https://community.fortinet.com/t5/FortiManager/Troubleshooting-Tip-How-to-troubleshoot-connectivity-...

Alternatively on the FortiGate you can re-add the FortiManager from CLI:
https://docs.fortinet.com/document/fortigate/7.0.15/administration-guide/697989/configuring-fortiman...
https://docs.fortinet.com/document/fortigate/7.2.8/administration-guide/697989/configuring-central-m...

Best regards,