FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
maulishshah
Staff
Staff
Article Id 313002
Description This article describes why the Dynamic VLAN assignment feature gets disabled 
Scope FortiGate, SSID.
Solution

By default, the Dynamic VLAN assignment is disabled.

 

This feature is useful when users need to change the VLAN automatically after changing the connected AP.

 

See the following image for reference:

 

Dynamic_vlan_disable.PNG

 

By default, it is disabled. However, it can be enabled connect to the RADIUS server to authenticate the user continually while the user is moving across different APs.

 

Enablerd.PNG

 

As shown above, the Dynamic VLAN assignment is enabled.

 

However, it will get disabled automatically if the Security method of the particular AP is changed.

 

Disabled.PNG

 

As shown in the image above, changing the security method disabled the RADIUS server settings, which meant the Dynamic VLAN assignment settings were disabled. 

 

Related document:

Creating an SSID with dynamic VLAN assignment