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Hi everyone,

Got a weird situation here.

I’ve reconfigured a Fortigate 40F 7.2.10 after every servers of my customer got migrated to Azure. The only thing left on the network are workstations and 2 printers, so remove all VLANs and decided to do a flat network.
So now, Fortigate has an Hardware Switch consisting of LAN1 and LAN2. LAN1 is connected to a factory resetted Fortiswitch port 46.

Workstations to workstations, ping is 100% fine.
Fortigate to workstations, ping is 50% fine
The same goes for VPN and SSLVPN

What could be the issue?

Thanks

Martin

EDIT1: tried to upgrade to 7.4.7, the recommended version as of today, issue remains

4 Spice ups
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Did you resolve this ?? Is the FortiSwitch being managed by the FortiGate using a FortiLink interface or are you simply plugging port 46 into LAN1 ? Is LAN1 the default GW ???

A Factory reset FSW has all ports in VLAN1. If LAN1 is just a vanilla port with no tags and you have assigned an IP to the HW switch containing LAN1/LAN2 then assuming LAN1 is in the same subnet as the PC’s then it should just appear as another client and ping should work in both directions. The fact your getting 50% packet loss suggests there is either an overlapping subnet or a duplicate default route somewhere. Make sure one of the workstations dosn’t have the same IP as the HW SW.