I'm trying to deploy a Fortiextender 311F (7.4.6) on LAN managed mode with an Fortigate 100F(7.0.14).
I follow this kb with a few differences and works perfect at the begining but i found a problem.
The difference was on the configuration of the extender interface on Fortigate side, I turned on the DHCP Server, to make the devices connected on remote side takes an spcifict scope.
This work fine if the remote device is connected once the connection between the extender and fortigate was established. If the remote devices is connected before the connection is established (FEX<->FG), the externder assing an IP of the default DHCP Server configured on de lan switch (192.168.200.0/24) and when finaly the FEX will connect with de gate, the device not renew his IP with de properly IP configured on the Gate becase the local link never lose. This problem detected by rebooting the extender (simulating a power off), since the connection with the gate takes a little (2 - 5 min because is lte) and the devices but faster than this.
What can I do to prevent this?
PD: I try to put another port as a member of the automatic le-switch but i can't because is not an option (first i disattach the port3 of the lan and disable the DHCP server) .
Thanks
