Failure to change opmode from NAT mode to Transparent mode

[ss85]

Hi All, 

First of all, I'm new to Fortigate. Next is my issue.

I wanted to set my opmode from NAT to transparent. However, i receive command fail message from the CLI. I have no idea what this message means. Did i missed out any steps before i can change the mode? What are the causes or factors which cause the failure. Need advices from any gurus.

Below is my CLI command for your reference. 

FIREWALL-1 # config vdom FIREWALL-1 (vdom) # edit root current vf=root:0

FIREWALL-1 (root) # config system settings FIREWALL-1 (settings) # FIREWALL-1 (settings) # FIREWALL-1 (settings) # set opmode transparent FIREWALL-1 (settings) # end node_check_object fail! for opmode transparent Attribute 'opmode' value 'transparent' checking fail -651 Command fail. Return code -651

By the way, im using Fortinet FG_101E with FortiOS v6.2.3. Hope this helps and awaiting for prompt reply.

Thank you very much.

[FlorianFlux]

Hi,

you MUST set the manageIP parametre :

https://docs.fortinet.com/document/fortigate/5.4.0/cookbook/463938

config system settings

set opmode transparent

set manageip 192.168.200.111 255.255.255.0

set gateway 192.168.200.99

end But i do not know why this is needed and when it will be necessary, i just put random IP and that does the job.

hope this helps