Vlan – Difference between Port (all VLANs allowed) and Trunk

fortinetvlan

I have a very basic background on networking Cisco (2960 switch), and realize that Fortiswitch 224E has the option to allow many VLANs in a port:

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On the other hand, is the trunk (which I assume is the same as Cisco):

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I wonder what are the differences between them. Why a port would allow many VLANs?

Thanks in advance.

Best Answer

Basically, a port with all VLANs allowed is a VLAN trunk. A trunk doesn't need to allow all VLANs, however.

Trunk used to be the port mode for multiple (tagged) VLANs, Cisco jargon. Other vendors use different terms for the same thing.

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