Fortinet black logo

Administration Guide

Example 2

Copy Link
Copy Doc ID d887c3dd-ee67-11ec-bb32-fa163e15d75b:146337
Download PDF

Example of invalid tagged VLAN.

Green flow

Between Port1 and Port2, packets are assigned to VLAN 1 at ingress, and then the tag is removed at egress.

Blue flow

Incoming on Port 3, a tagged packet with VLAN value 100 is allowed, because 100 is the Port 3 native VLAN (the hardware VLAN table accepts a tagged or untagged match to a valid VLAN).

The packet will be sent on port1 and port4 (with packet tag 100).

Example of invalid tagged VLAN.

Green flow

Between Port1 and Port2, packets are assigned to VLAN 1 at ingress, and then the tag is removed at egress.

Blue flow

Incoming on Port 3, a tagged packet with VLAN value 100 is allowed, because 100 is the Port 3 native VLAN (the hardware VLAN table accepts a tagged or untagged match to a valid VLAN).

The packet will be sent on port1 and port4 (with packet tag 100).