Lesson 4 of 11
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Layer 2 Switching
Operate the FortiGate in transparent mode, understand MAC learning and forwarding, handle VLANs and STP, and troubleshoot bridging.
In transparent mode the FortiGate (or a VDOM) behaves as a Layer 2 bridge inserted inline between existing devices. It has no routed interfaces for transit traffic — only a single management IP — so you can drop it into a network to add inspection without re-addressing anything. Firewall policies still apply to the bridged traffic.
In transparent mode, the FortiGate behaves as a: