subnet-overlapping / more than one interface in the same subnet

[snakekick]

Hello,

it is possible with a fortigate fw to config more than one port in the same subnet ?

i need more than one ip and more then gig ethernet to connect with other network but i don´t have access to the other switch so that i can´t use lacp

thanks.

[ede_pfau]

No, you can't. Mainly because only LACP allows vendor-agnostic trunking.

What you can do is run 2 separate VLANs from 2 ports across...but again, you need access to the switch for this.

[emnoc]

You think you  to overlap subnet and interfaces than your  design and topology is wrong. And no you can't overlap a L3 subnet across multiple interfaces in a single vdom.

Ken

[neonbit]

'technically' you can enable this feature on the FortiGate:

config system settings

set allow-subnet-overlap enable

end

This will allow you to configure IP's on different interfaces to be on the same subnet.

But like the guys said, if you ever need to do this then you should be redesigning your network.